Best Underwear for Gym: 15 Top Picks in Australia (2025)

If you want to explore our range, why don’t you take 20% off your first order – use SLY20 at the checkout. Remember you have a ‘first pair guarantee’ as well, so you’ve got nothing to lose.

This guide cuts through the marketing noise to reveal the 15 best underwear options for gym workouts available in Australia right now. We’ve evaluated each pick based on moisture-wicking capabilities, anti-chafe construction, support quality, and how well they perform under tight activewear. Whether you’re lifting heavy, running long distances, or crushing a high-intensity class, you’ll discover exactly which underwear suits your body type, activity level, and specific needs. From innovative pouch designs that eliminate discomfort to seamless thongs that disappear under leggings, these are the pairs that actually deliver on their promises.

1. SLY Collective bamboo boxer briefs

SLY Collective’s bamboo boxer briefs represent what happens when Australian design meets genuine innovation in men’s athletic underwear. These aren’t just another pair of generic gym shorts with flashy marketing. You get a purpose-built inner pouch that physically separates your anatomy from your thighs, eliminating the skin-on-skin friction that causes painful chafing during intense training sessions. The longer leg design stays exactly where you put it, whether you’re dropping into a deep squat or pushing through a grueling treadmill sprint.

Why this is good for the gym

Your workout demands complete focus, and these boxer briefs deliver by solving the two biggest distractions in men’s gym underwear: chafing and temperature regulation. The integrated pouch system creates a dedicated compartment that keeps everything separated and supported, which means you spend zero time adjusting mid-set. Bamboo’s natural properties actively wick moisture away from your skin while allowing airflow that prevents the swampy feeling you get with synthetic fabrics. This temperature control isn’t just about comfort during your session. It actually supports better testicular health by preventing the overheating that can impact fertility.

Urologists consistently recommend pouch underwear for men who experience inflammation or discomfort, recognizing their role in improving patient comfort and quality of life.

If you want to explore our range, why don’t you take 20% off your first order – use SLY20 at the checkout. Remember you have a ‘first pair guarantee’ as well, so you’ve got nothing to lose.

Best for body type and activity

These boxer briefs work exceptionally well for weightlifters and CrossFit athletes who need stable support during dynamic movements like box jumps, cleans, and thrusters. The pouch design provides that support without compression, making them ideal if you find traditional athletic underwear too restrictive. You’ll appreciate them during high-intensity interval training where constant movement typically causes ride-up and bunching. The longer leg cut suits athletic builds and prevents that awkward gap between your underwear and shorts that can cause inner-thigh irritation during cardio sessions.

Sizing, availability and price

SLY Collective offers a comprehensive size range that accommodates various body types, with detailed measurement guides on their website to ensure you select the right fit. You can order directly from their Australian site with free shipping on orders over $100, making it economical to stock up on multiple pairs. They back their product with a comfort guarantee that provides full refunds on your first pair if you’re not satisfied, plus free size exchanges if you need to adjust your initial order.

2. Step One anti chafe boxer briefs

Step One built its reputation by solving one specific problem that plagues gym-goers: inner-thigh chafing during repetitive movement. Their boxer briefs feature strategically placed Lycra panels that run along the inner thigh area, creating a smooth, flexible barrier between your skin. This isn’t a generic moisture-wicking claim or vague comfort promise. You get actual engineered panels made from ultra-flexible material that prevents the skin-on-skin friction that leaves you raw after leg day or a long cardio session.

Why this is good for the gym

The dedicated anti-chafe panels make these boxer briefs particularly effective for exercises that involve repetitive leg movement, such as running, cycling, or high-rep leg training. Your inner thighs stay protected during movements that typically cause friction, allowing you to push through tough workouts without worrying about painful irritation developing mid-session. The bamboo viscose body actively pulls moisture away from your skin while maintaining breathability, which prevents that clammy feeling during intense training.

The Lycra gusset technology completely prevents chafing by creating a smooth interface between your thighs during dynamic movement.

Best for body type and activity

These boxer briefs work exceptionally well for runners and cyclists who experience consistent friction from repetitive leg motion. You’ll find them particularly beneficial if you’ve struggled with chafing during long cardio sessions or endurance training. The inclusive sizing from XS to 6XL accommodates a wide range of body types, making them accessible whether you’re building muscle or working through a weight loss journey. Athletes who rotate between different training styles appreciate the versatility these provide across various gym activities.

Fabric, tech and comfort

The bamboo viscose construction delivers genuine softness against your skin without the scratchy feel of some synthetic athletic fabrics. This sustainable material naturally resists odour buildup and maintains its moisture-wicking properties even during extended wear. Step One offers multiple colours and prints to suit your style preferences, though some users report that the fabric may show wear after extensive machine washing and drying.

Sizing, availability and price

Step One positions itself in the mid-to-premium price range, with individual pairs costing more than basic athletic underwear but less than high-end compression gear. You can purchase directly through their Australian site, which frequently offers bundle deals that reduce the per-pair cost when you buy multiple boxer briefs at once. Their detailed sizing chart helps you select the right fit, and customer reviews consistently praise the accuracy of their size recommendations.

3. VANTA Sweat Series performance trunks

VANTA developed their Sweat Series specifically for the Australian climate, which means you get performance underwear engineered to handle intense heat and humidity during your gym sessions. These trunks prioritize anti-chafe construction through flatlock seams that eliminate the raised stitching found in standard underwear. You won’t find generic moisture-wicking claims here. VANTA focuses on practical solutions for athletes who train hard in challenging conditions and refuse to let discomfort compromise their performance.

Why this is good for the gym

The climate-specific fabric excels at managing the excessive sweat that builds up during high-intensity workouts in warm environments. Your skin stays drier because the material actively pulls moisture away while maintaining exceptional breathability through its construction. This becomes critical during extended gym sessions where accumulated sweat typically leads to chafing and discomfort. The flatlock seams work in tandem with the fabric to create smooth contact points that won’t irritate your skin, even during exercises that involve repetitive hip and leg movement like lunges, box jumps, or sprint intervals.

The combination of anti-chafe construction and climate-optimized fabric keeps you dry and irritation-free during demanding Australian summer workouts.

Best for body type and activity

These performance trunks suit runners and CrossFit athletes who generate significant heat during their training. You’ll appreciate the no ride-up fit if you’ve struggled with underwear that bunches or shifts during dynamic movements like burpees, kettlebell swings, or plyometric exercises. Athletes with athletic builds find the trunk cut provides adequate coverage without excess fabric that can bunch under tight gym shorts. VANTA’s design works particularly well for morning trainers who face humid conditions or anyone who trains in non-air-conditioned gyms.

Fabric, tech and comfort

The lightweight performance fabric dries faster than traditional cotton or bamboo blends, which matters when you’re transitioning between exercises or cooling down after intense sets. VANTA constructs these trunks to stay securely in place through a tailored fit that doesn’t rely on excessive compression. This creates support without the restrictive feeling that some compression underwear produces. The smooth fabric surface minimizes friction in high-contact areas where traditional underwear typically causes irritation.

Sizing, availability and price

VANTA positions itself in the premium price range, reflecting the specialized engineering and climate-specific design. You can purchase directly through their Australian website, which provides detailed size guides to ensure proper fit. The brand offers a focused product range rather than extensive style variations, concentrating their development on perfecting core performance features. This specialization means you’re paying for function over fashion, making these trunks a worthwhile investment for serious athletes who prioritize performance during their gym sessions.

4. Runderwear running boxer shorts

Runderwear built their entire brand around eliminating chafing for runners, which shows in every detail of their boxer shorts. These aren’t multi-purpose athletic underwear trying to do everything. You get seamless 360-degree construction that removes every stitch, tag, and seam that typically causes friction during repetitive movement. The British brand has established a strong presence in Australia by focusing exclusively on solving the specific problems distance runners face, particularly the painful inner-thigh and waistband irritation that develops over kilometres of training.

Why this is good for the gym

Your running sessions demand underwear that won’t create hotspots or friction points, and Runderwear’s boxer shorts deliver through their completely seamless design. You experience zero irritation from raised seams or rough edges because none exist in the construction. The moisture-wicking fabric pulls sweat away from your skin during intense cardio, whether you’re logging miles on the treadmill or pushing through sprint intervals. Strategic micro-perforations create targeted ventilation in areas where heat typically builds up, keeping you cooler during extended running sessions.

The 360-degree seamless construction eliminates every potential friction point that traditional underwear creates during running and cardio workouts.

Best for body type and activity

These boxer shorts serve distance runners and cardio enthusiasts who spend significant time on repetitive leg movements. You’ll benefit most if you regularly log long treadmill sessions, outdoor runs, or participate in endurance-based group fitness classes. Runderwear offers options for both men and women, acknowledging that chafing isn’t gender-specific. Athletes with lean to athletic builds find the fit accommodates movement without excess fabric bunching, while the seamless construction works across various body types by eliminating the pressure points that standard seams create.

Fabric, tech and comfort

The breathable synthetic blend dries rapidly between exercises and maintains its shape through repeated washing. Runderwear prioritizes function over fashion, offering straightforward colours that work under any gym outfit. The fabric feels lightweight against your skin without that tissue-paper thinness that some seamless underwear exhibits. You get durability that withstands high-frequency washing without pilling or losing elasticity.

Sizing, availability and price

Runderwear positions itself in the premium category, reflecting the specialized seamless construction and runner-focused engineering. You can purchase through their Australian website, which stocks their full range and provides detailed sizing information. The brand offers various styles beyond boxer shorts, including base layers and sports bras, though their underwear range remains their core focus. Customer reviews consistently mention accurate sizing, making your first purchase less risky than brands with inconsistent fit.

5. Under Armour HeatGear boxerjock

Under Armour’s HeatGear boxerjock brings global sports technology to your Australian gym sessions through fabric engineering that prioritizes moisture management and unrestricted movement. These aren’t basic athletic underwear with a premium brand name slapped on. You get proprietary HeatGear fabric that Under Armour developed specifically for high-performance athletes who demand gear that works as hard as they do. The boxerjock sits between traditional boxer briefs and compression shorts, creating a hybrid design that delivers support without the restrictive feel of full compression gear.

Why this is good for the gym

Your intense training generates substantial heat and sweat, which HeatGear fabric manages through its ultra-light construction that wicks moisture away from your skin significantly faster than standard athletic materials. You stay cooler during demanding sets because the fabric actively pulls sweat to the surface where it evaporates quickly. The four-way stretch technology moves with your body in every direction, which matters during complex movements like Turkish get-ups, overhead squats, or dynamic stretching routines. Under Armour integrated anti-odour treatment directly into the fabric, preventing bacterial growth that causes that distinctive gym smell even after multiple training sessions between washes.

The HeatGear fabric’s rapid moisture-wicking keeps you dry and focused during high-intensity gym sessions that generate excessive sweat.

Best for body type and activity

These boxerjocks suit weightlifters and functional fitness athletes who need stable support during explosive movements without compression that restricts blood flow. You’ll appreciate the range during Olympic lifts, plyometric training, or any activity requiring full hip mobility. Under Armour offers multiple inseam lengths (3″, 6″, and 9″) that accommodate different preferences and body types, allowing you to select coverage that works with your specific training shorts and movement patterns.

Fabric, tech and comfort

The performance waistband stays secure on your hips without rolling down during forward bends or creating uncomfortable pressure when you breathe deeply between heavy sets. Under Armour’s construction maintains consistent compression throughout the garment, eliminating loose spots that bunch or tight areas that dig in. The smooth fabric glides under your gym shorts without adding bulk or creating visible lines.

Sizing, availability and price

Under Armour positions the HeatGear boxerjock in the mid-to-premium range, though you’ll frequently find sales and multi-pack deals through their Australian website that reduce the per-pair cost substantially. The brand’s extensive retail presence across Australia means you can try sizes in-store before purchasing, reducing the risk of ordering the wrong fit online.

6. Nike Dri FIT Essential boxers

Nike’s Dri-FIT Essential boxers leverage decades of athletic fabric development to deliver reliable performance during your gym sessions. These aren’t fashion-forward statement pieces with unnecessary design elements. You get proven moisture management technology wrapped in a straightforward design that prioritizes function over flash. Nike built its reputation by equipping elite athletes worldwide, and that same engineering philosophy flows into these everyday training essentials that work across various workout intensities and gym environments.

Why this is good for the gym

Your training generates sweat that standard cotton underwear traps against your skin, creating discomfort and potential chafing. Nike’s Dri-FIT technology actively pulls moisture away from your body and pushes it to the fabric surface where it evaporates quickly, keeping you drier during intense cardio or heavy lifting sessions. The flat seam construction eliminates the raised stitching that typically creates friction points during repetitive movements like running, cycling, or high-rep leg training. You maintain focus on your performance rather than adjusting uncomfortable underwear between sets.

Dri-FIT technology keeps moisture away from your skin, maintaining comfort during extended gym sessions that generate substantial sweat.

Best for body type and activity

These boxers suit general fitness enthusiasts who rotate between various training styles rather than specializing in one discipline. You’ll find them effective for circuit training, moderate cardio, and standard weightlifting routines that don’t demand extreme compression or specialized support features. Nike’s fit accommodates athletic to average builds, providing adequate coverage without excess fabric that bunches under your gym shorts.

Fabric, tech and comfort

The lightweight synthetic blend dries faster than natural fibres while maintaining durability through repeated washing. Nike’s construction creates a smooth surface that glides under your workout gear without adding bulk or creating visible lines. These boxers maintain their shape and elasticity better than budget alternatives that stretch out after several washes.

Sizing, availability and price

Nike positions these boxers in the mid-range price category, making them accessible without the premium cost of specialized athletic underwear. You’ll find them readily available through Nike’s Australian website and major sporting goods retailers nationwide, allowing you to try sizes in-store before purchasing.

7. Bonds Sport active trunks

Bonds brings iconic Australian heritage to your gym bag through active trunks that prioritize accessibility and reliable performance. This isn’t a niche brand making bold claims about revolutionary technology. You get practical athletic underwear from a company that’s been clothing Australians for over a century, applying that experience to create gym-ready trunks that work across various training styles without demanding a premium price tag. Bonds understands that most gym-goers need dependable basics that perform well rather than specialized gear with features they’ll never use.

Why this is good for the gym

Your training sessions benefit from the moisture-wicking fabric that manages sweat buildup during moderate to intense exercise. Bonds constructs these active trunks with a contoured pouch that provides support without compression, keeping everything in place during movements like squats, lunges, or treadmill sessions. The waistband stays secure on your hips without rolling down, which matters when you’re moving between different exercises or transitioning from warm-up to working sets. These trunks deliver consistent performance across various gym activities without specializing in any particular discipline.

The contoured pouch and moisture-wicking fabric create reliable comfort during diverse gym workouts without unnecessary complexity.

Best for body type and activity

These active trunks suit general fitness enthusiasts who rotate between cardio machines, free weights, and group fitness classes throughout the week. You’ll find them effective whether you’re building strength, improving cardiovascular fitness, or maintaining general health. Bonds designs for average to athletic builds, providing adequate coverage that works under standard gym shorts. The versatile cut accommodates different body types without the precise fit requirements that some performance underwear demands.

Fabric, tech and comfort

The cotton-blend construction balances breathability with durability, maintaining its shape through repeated washing better than pure cotton alternatives. Bonds incorporates flatlock seams that reduce irritation in high-friction areas during exercise. These trunks feel soft against your skin without the synthetic slickness some athletic fabrics produce.

Sizing, availability and price

Bonds positions these active trunks in the budget-friendly category, making them among the most affordable options for quality gym underwear in Australia. You’ll find them stocked at major retailers nationwide, including supermarkets, department stores, and sporting goods chains, eliminating the need for online ordering or specialty store visits.

8. Myprotein cotton sport boxers

Myprotein strips away the premium pricing and advanced fabric technology to deliver straightforward cotton sport boxers that prioritize affordability without sacrificing basic gym functionality. These aren’t engineered for elite athletes or specialized training demands. You get simple, reliable underwear that works for everyday gym sessions when you need functional basics rather than performance innovations. Myprotein built its reputation on accessible sports nutrition, and that same value-focused philosophy extends to their apparel range, making quality gym essentials available to budget-conscious athletes.

Why this is good for the gym

Your general fitness routine benefits from the cotton comfort that these boxers provide during light to moderate workouts. Cotton naturally breathes against your skin, preventing the synthetic feel that some athletes dislike in technical fabrics. These boxers work effectively during standard gym sessions that include moderate cardio, basic strength training, and flexibility work where you’re not generating extreme sweat or requiring advanced moisture management. Myprotein’s functional design stays in place through typical gym movements without the specialized features that drive up costs in premium athletic underwear.

Cotton’s natural breathability makes these boxers suitable for everyday gym sessions that don’t demand advanced moisture-wicking technology.

Best for body type and activity

These sport boxers suit budget-conscious gym-goers who train regularly but don’t need specialized performance features for high-intensity or endurance activities. You’ll find them effective for general weightlifting, moderate treadmill sessions, and group fitness classes that don’t involve excessive sweating. The simple design accommodates various body types through straightforward sizing rather than engineered compression or anatomical cuts.

Fabric, tech and comfort

The cotton construction feels soft and familiar against your skin without the slick texture of synthetic athletic fabrics. Myprotein keeps the design basic with secure waistbands and adequate coverage, focusing on function over fashion.

Sizing, availability and price

Myprotein positions these boxers in the budget-friendly category, making them the best underwear for gym training when you need to stock your drawer without substantial investment. You’ll find value multipacks on their Australian website, often with promotional codes that further reduce costs.

9. 2XU compression performance brief

2XU developed their compression performance brief for serious athletes who demand maximum muscle support during intense training sessions. This Australian brand specializes in graduated compression technology that extends beyond basic athletic underwear into genuine performance enhancement gear. You’re not getting standard gym underwear with compression claims added to the marketing copy. These briefs deliver medical-grade compression that supports your muscles during explosive movements and accelerates recovery between training sessions through improved circulation.

Why this is good for the gym

Your heavy lifting and high-intensity training sessions create substantial muscle fatigue that compression actively addresses by supporting your glutes, hip flexors, and upper thighs throughout each movement. The graduated compression increases blood flow to your working muscles, delivering more oxygen during your sets and removing metabolic waste products faster during rest periods. This becomes particularly valuable during leg-focused workouts where deep squats, deadlifts, and plyometric movements demand maximum power output. Your muscles receive consistent support that reduces vibration and strain, allowing you to maintain better form through fatigue.

Graduated compression enhances blood circulation during intense gym sessions, supporting muscle performance and accelerating recovery between sets.

Best for body type and activity

These compression briefs suit powerlifters and CrossFit athletes who generate substantial force during compound movements and need stable support for their posterior chain. You’ll benefit most if you train with heavy loads or participate in explosive activities like Olympic lifting, box jumps, or sprint work. The firm compression works effectively for muscular builds and athletes with developed glutes and thighs, though individuals new to compression gear might find the tight fit takes adjustment.

Fabric, tech and comfort

2XU constructs these briefs from their proprietary PWX fabric that maintains consistent compression without restricting your range of motion. The material provides antibacterial protection that prevents odour buildup during extended training sessions. You experience genuine muscle support rather than the superficial tightness some compression underwear creates.

Sizing, availability and price

2XU positions these briefs in the premium to luxury category, reflecting the advanced compression technology and Australian engineering. You can purchase through their website and select Australian sporting goods retailers, with detailed size charts ensuring proper compression fit.

10. Gymshark seamless thong three pack

Gymshark’s seamless thong three pack delivers invisible coverage under tight leggings and bike shorts through construction that eliminates every visible line and seam. This British brand captured the fitness fashion market by creating stylish yet functional gear that actually performs during workouts rather than just looking good in gym selfies. You get three thongs per pack at a price point that makes them accessible for building your workout underwear rotation without emptying your wallet. Gymshark designed these specifically for women who refuse to choose between comfort and aesthetics during their training sessions.

Why this is good for the gym

Your tight activewear demands underwear that won’t create visible lines or bunching, and these seamless thongs completely disappear under even the thinnest leggings. The design eliminates the distractions of adjusting or worrying about panty lines during squats, lunges, or barre classes. Gymshark’s soft breathable fabric manages moisture during cardio sessions while maintaining comfort through strength training. These thongs stay securely in place without the constant riding or shifting that cheaper alternatives create, allowing you to focus entirely on your workout rather than your underwear.

The seamless construction creates invisible coverage under tight activewear, eliminating visible lines that distract from your gym performance.

Best for body type and activity

These thongs suit yoga practitioners and group fitness enthusiasts who wear form-fitting activewear and need complete coverage invisibility. You’ll appreciate them during barre classes, Pilates sessions, or any activity where you’re constantly moving through different positions that would expose visible panty lines. The minimal coverage works across various body types, though women who prefer fuller coverage during intense movements might find the thong style takes adjustment.

Fabric, tech and comfort

Gymshark constructs these thongs from stretchy synthetic material that moves with your body without creating pressure points or digging in at the waistband. The branded elastic waistband provides secure hold without rolling or pinching during forward bends or core exercises.

Sizing, availability and price

Gymshark positions this three pack in the mid-range category, delivering excellent value through multiple thongs at a price comparable to single pairs from premium brands. You can purchase through their Australian website, though popular sizes frequently sell out quickly during new releases.

11. Runderwear womens hipster briefs

Runderwear extends their seamless anti-chafe technology to women through hipster briefs that eliminate every friction point during gym sessions. These briefs share the same 360-degree seamless construction that made their men’s range popular with distance runners, adapted specifically for female anatomy and movement patterns. You get underwear engineered by a brand that understands chafing isn’t exclusive to one gender, creating coverage that works during intense cardio, weightlifting, and high-intensity interval training without the irritation that traditional underwear causes.

Why this is good for the gym

Your workout intensity shouldn’t be limited by uncomfortable underwear that creates friction during repetitive movements. Runderwear’s completely seamless design removes every seam, tag, and rough edge that typically causes hotspots during treadmill sessions or cycling classes. The moisture-wicking fabric pulls sweat away from your skin during demanding exercises, preventing the clammy buildup that leads to chafing and discomfort. These hipster briefs maintain their position through burpees, mountain climbers, and box jumps without riding up or creating uncomfortable bunching under your activewear.

The seamless construction eliminates friction points that standard underwear creates during high-movement gym activities.

Best for body type and activity

These hipster briefs suit women who participate in cardio-intensive training such as running, cycling, rowing, or circuit classes that involve sustained leg movement. You’ll benefit most if you’ve experienced inner-thigh or waistband chafing during previous workouts. The hipster cut provides more coverage than thongs while sitting lower on your hips than traditional briefs, working effectively across various body types and training styles.

Fabric, tech and comfort

Runderwear constructs these briefs from breathable synthetic material that dries quickly between exercises and maintains its shape through repeated washing. The fabric feels lightweight without the fragile thinness that some seamless underwear exhibits.

Sizing, availability and price

Runderwear positions these hipster briefs in the premium category, available through their Australian website with detailed sizing guides that ensure proper fit from your first order.

12. Lululemon UnderEase mid rise thong

Lululemon’s UnderEase mid-rise thong brings technical fabric innovation to women’s gym underwear through their proprietary modal construction that balances support with breathability. This Canadian brand built its reputation on premium activewear that performs during demanding yoga and fitness sessions, and that same engineering excellence extends to these thongs designed specifically for women who train in form-fitting leggings. You get underwear that disappears under your tightest workout gear while managing moisture and maintaining comfort through varied training intensities.

Why this is good for the gym

Your high-intensity workouts generate substantial sweat that traditional cotton underwear traps against your skin, creating discomfort and potential irritation. Lululemon’s UnderEase thong actively wicks moisture away through its modal fabric construction, keeping you dry during demanding cardio sessions or heated yoga classes. The mid-rise design sits comfortably on your hips without creating the muffin-top effect that low-rise styles can produce during forward bends or core exercises. These thongs stay invisibly in place during burpees, high knees, and jump squats without riding up or shifting, allowing you to concentrate fully on your training rather than adjusting your underwear between sets.

The modal fabric wicks moisture effectively during intense gym sessions while remaining completely invisible under tight activewear.

Best for body type and activity

These thongs suit yoga practitioners and HIIT enthusiasts who wear form-fitting leggings and need underwear that won’t create visible lines or uncomfortable bunching. You’ll appreciate them during hot yoga, barre classes, or any activity where you’re moving through different positions that would expose standard underwear lines. The mid-rise cut accommodates various torso lengths while the thong design works across different body types by eliminating fabric coverage that can bunch during leg-intensive movements.

Fabric, tech and comfort

Lululemon constructs these thongs from 88% modal and 12% lycra elastane, creating a soft, smooth feel against your skin that stretches with your body without losing shape. The bonded edges eliminate visible seams while preventing the fabric from rolling or digging in during dynamic movements. Modal naturally resists odour buildup better than synthetic fabrics, maintaining freshness through extended training sessions.

Sizing, availability and price

Lululemon positions these thongs in the premium category, reflecting their technical fabric and quality construction. You can purchase through Lululemon’s Australian website or their retail stores across major cities, with detailed size charts ensuring proper fit. The brand sells these in five-packs that reduce the per-pair cost while stocking your workout drawer with reliable options.

13. Boody bamboo boyleg briefs

Boody creates women’s gym underwear from sustainable bamboo viscose that delivers full-coverage comfort during your training sessions. These boyleg briefs prioritize eco-conscious materials without sacrificing the performance features you need for various gym activities. You get a seamless design that stays invisibly smooth under leggings while providing more coverage than thongs or bikini styles, making them ideal for women who prefer secure, supported coverage during dynamic movements.

Why this is good for the gym

Your low to moderate intensity workouts benefit from the flat waistband that sits securely on your hips without rolling down during floor exercises, stretches, or machine-based training. Boody’s boyleg design prevents ride-up through its longer leg cut, eliminating the constant adjusting that shorter styles create during lunges, squats, or leg press movements. The bamboo viscose construction naturally manages moisture while feeling exceptionally soft against your skin, creating breathable comfort during yoga flows, Pilates classes, or weightlifting sessions that don’t generate extreme sweat buildup.

The flat waistband and longer leg cut eliminate ride-up and rolling, keeping you comfortable during floor exercises and moderate-intensity training.

Best for body type and activity

These boyleg briefs suit yoga practitioners and Pilates enthusiasts who need full coverage during inversions, stretches, and controlled movements. You’ll appreciate them during barre classes, resistance band training, or recovery sessions where comfort takes priority over maximum ventilation. The mid-rise cut accommodates various torso lengths while the full-coverage design works effectively across different body types.

Fabric, tech and comfort

Boody blends 79% bamboo viscose with 15% nylon and 6% elastane, creating sustainable fabric that maintains its shape through repeated washing. The seamless construction eliminates irritation points while the smooth texture glides under your activewear.

Sizing, availability and price

Boody positions these briefs in the budget-friendly category, offering sustainable bamboo fabric at accessible prices. You’ll find them through Boody’s Australian website with sizes ranging from XS to XL.

14. Modibodi sweat proof workout briefs

Modibodi engineered their sweat-proof workout briefs to solve the excessive perspiration problem that derails intense gym sessions through patented absorbent technology originally developed for period protection. This Australian brand applies their leak-proof innovation to workout-specific briefs that actively manage sweat rather than simply wicking it away. You get underwear with built-in absorption panels that capture moisture before it creates discomfort, making these the best underwear for gym training when you generate substantial sweat during high-intensity workouts.

Why this is good for the gym

Your demanding cardio sessions and heated studio classes generate sweat that standard moisture-wicking fabrics struggle to manage effectively. Modibodi’s patented gusset technology actively absorbs perspiration through multiple fabric layers that trap moisture away from your skin, keeping you dry during spin classes, hot yoga, or brutal HIIT circuits. The integrated antimicrobial treatment prevents odour-causing bacteria from developing, which matters during back-to-back training sessions or when you can’t shower immediately after your workout. These briefs maintain freshness through extended gym time that would leave standard athletic underwear saturated and uncomfortable.

Modibodi’s absorbent technology captures and locks away sweat, preventing the moisture buildup that causes discomfort during intense training sessions.

Best for body type and activity

These sweat-proof briefs suit women who perspire heavily during cardiovascular training, heated studio classes, or high-intensity interval workouts. You’ll benefit most if standard moisture-wicking underwear leaves you feeling damp and uncomfortable during extended sessions. The full-coverage design accommodates various body types while providing secure support during dynamic movements like burpees, jump squats, or treadmill sprints.

Fabric, tech and comfort

Modibodi constructs these briefs with multiple absorbent layers that work together to capture moisture, lock it away from your skin, and allow surface evaporation. The outer fabric remains breathable while the internal layers manage substantial sweat volume without feeling bulky or creating visible lines under your activewear.

Sizing, availability and price

Modibodi positions these briefs in the premium category, reflecting their patented absorbent technology and Australian engineering. You can purchase through their Australian website with inclusive sizing options that accommodate diverse body types and detailed guides ensuring proper fit.

15. Knix leakproof no show thong

Knix applies their medical-grade leak-proof technology to create a no-show thong that protects you during gym sessions when you’re menstruating or managing light bladder leaks from high-impact exercise. This Canadian brand revolutionized period underwear by engineering genuine absorbent capacity into stylish designs that work as standalone protection or backup during workouts. You get a thong that handles your period or stress incontinence while remaining completely invisible under tight activewear, eliminating the anxiety of leaks during burpees, box jumps, or heavy deadlifts.

Why this is good for the gym

Your training schedule shouldn’t stop during your period or be limited by stress incontinence from jumping movements. Knix’s patented absorbent gusset captures menstrual flow or light leaks through multiple fabric layers that lock moisture away from your skin, keeping you dry and confident during intense gym sessions. The thong’s no-show design disappears under your tightest leggings while the bonded edges prevent visible lines that would expose your underwear during squats or lunges. You maintain complete focus on your workout rather than worrying about leaks or needing to check for visible protection through your activewear.

Knix’s leak-proof technology provides reliable protection during periods or stress incontinence, eliminating workout anxiety about potential leaks.

Best for body type and activity

This thong suits women who experience light to moderate flow during menstruation or stress incontinence during high-impact activities like running, plyometrics, or CrossFit. You’ll benefit most if jumping movements typically cause bladder leaks or if you want to train during your period without bulky pads or tampons. The inclusive sizing from XS to XXXXL accommodates diverse body types while the thong cut works effectively for women who prefer minimal coverage during dynamic gym movements.

Fabric, tech and comfort

Knix constructs these thongs with multiple absorbent layers in the gusset that work together to capture liquid, prevent leaks, and control odour through antimicrobial treatment. The body fabric remains lightweight and breathable while the leak-proof technology handles protection without creating bulk or discomfort.

Sizing, availability and price

Knix positions these thongs in the mid-to-premium category, available through their Australian website with detailed absorbency level options that match your specific needs during different cycle days or activity intensities.

Final thoughts

Your gym performance depends on more than just your training program and nutrition. The best underwear for gym sessions eliminates distractions by managing moisture, preventing chafing, and staying securely in place through every movement. You’ve now seen 15 options that solve specific problems, from SLY Collective’s innovative pouch design that separates and supports, to Modibodi’s sweat-proof technology that handles intense perspiration. Each pair on this list delivers genuine performance benefits rather than empty marketing promises.

Selecting the right underwear transforms your training experience by removing discomfort that typically develops during demanding workouts. You deserve gear that supports your goals rather than creating obstacles. Australian brands like SLY Collective engineer solutions specifically for our climate and active lifestyles, making them worth serious consideration when you’re ready to upgrade your gym essentials. Discover how men’s pouch underwear can revolutionise your workout comfort and help you train without distraction.