Nothing ruins a solid workout faster than underwear that rides up, bunches, or leaves you dealing with chafing mid-squat. Finding the best underwear for gym sessions means looking beyond basic cotton briefs and investing in pieces engineered for movement, moisture, and all-day comfort. Whether you’re lifting, running, or powering through a HIIT class, your base layer matters more than most people realise.
The right gym underwear should stay put through every lunge and burpee, wick sweat away from your skin, and feel virtually invisible under your workout gear. Features like seamless construction, breathable fabrics, and supportive fits can make the difference between a focused session and one spent constantly adjusting.
At SLY Collective, we know a thing or two about performance underwear, our men’s bamboo boxer briefs with built-in pouch support were designed specifically to eliminate chafing and keep everything comfortable during activity. That same obsession with functional comfort drove us to research the best options across the board. Below, you’ll find 15 top picks that actually stay put, so you can focus on your form instead of your underwear.
1. SLY Collective bamboo boxer briefs with inner pouch
While most of this list focuses on women’s options, we’d be remiss not to include what we know works for men at the gym. The SLY Collective bamboo boxer briefs feature a built-in inner pouch that separates and supports everything where it belongs, eliminating the chafing and discomfort that can derail your workout. This isn’t just another pair of compression shorts pretending to be underwear; it’s purpose-built support designed specifically for movement and performance.
Best for
You’ll get the most out of these if you’re dealing with chafing between the thighs or constant adjustment during squats, deadlifts, or long runs. The inner pouch design keeps everything in place without compression, making these ideal for high-intensity training, CrossFit sessions, or any activity where traditional boxer briefs fall short. Men who’ve had issues with overheating during workouts will appreciate how the bamboo fabric regulates temperature naturally, which can actually support better testicular health during extended gym sessions.
Fabric and breathability
Bamboo viscose forms the base of these boxer briefs, offering natural moisture-wicking properties that pull sweat away from your skin faster than cotton ever could. The fabric breathes well enough to prevent that swampy feeling mid-workout, and it’s naturally antimicrobial, so you won’t be dealing with odour buildup even after back-to-back training days. Bamboo also requires significantly less water to grow than conventional cotton, which makes these a more sustainable choice if that factors into your purchasing decisions.
“Bamboo fabric helps prevent overheating and regulates temperature for better comfort and potentially healthier sperm.”
Fit, seams and staying power
The longer leg design prevents ride-up completely, something most standard boxer briefs fail at within the first few minutes of activity. Flat-lock seams sit flush against your skin without creating pressure points or chafe zones, even under tight workout gear. Everything stays exactly where you put it when you first pull these on, thanks to the structured pouch support that doesn’t rely on compression or constriction. You won’t find yourself doing the awkward gym adjustment shuffle between sets.
Things to know
SLY Collective includes a small integrated pocket in the waistband, perfect for stashing your locker key or credit card at the gym. These run true to size based on standard Australian sizing, and the company offers free size exchanges if you need to swap after your first order. The comfort guarantee means you can get a full refund on your first pair if they don’t work for you, which removes most of the risk from trying a new underwear style.
Price in Australia
Expect to pay around $19-45 AUD per pair when ordering directly from SLY Collective’s website. Multi-pair bundles typically offer better value, and orders over $100 qualify for free shipping within Australia. That puts these in the premium category for men’s underwear, but the durability and chafe-free performance justify the price for most buyers who’ve dealt with cheaper options that fall apart or lose their support after a few washes.
2. Under Armour Pure Stretch no-show
The Under Armour Pure Stretch no-show sits at the top of many gym-goers’ lists for good reason. This seamless design eliminates visible panty lines completely, making it the perfect match for your tightest workout leggings. Under Armour built these specifically for athletes who need underwear that disappears under technical fabric while handling serious sweat.
Best for
You’ll appreciate these if you’re focused on a completely invisible profile under your gym clothes. The no-show cut works brilliantly for yoga, Pilates, or any workout where you’re bending, stretching, or moving through a full range of motion without worrying about lines or bulk. Women who prefer minimal coverage during high-intensity cardio sessions will find these stay comfortable without feeling like they’re wearing nothing at all.
Fabric and breathability
Under Armour uses a four-way stretch fabric blend that moves with your body in every direction. The material pulls moisture away from your skin quickly, though it’s not quite as naturally breathable as bamboo or merino wool options. You’ll stay relatively dry through moderate workouts, but extremely sweaty sessions might leave you wanting more ventilation.
Fit, seams and staying power
These genuinely stay put thanks to laser-cut edges that grip your skin without digging in or leaving marks. The seamless construction means no chafing anywhere, and the stretchy fabric recovers its shape wash after wash.
“The no-show cut works brilliantly for yoga, Pilates, or any workout where you’re bending, stretching, or moving through a full range of motion.”
Things to know
Under Armour recommends sizing down if you’re between sizes, as these run slightly large. They hold up well in the wash but should go in on a cool cycle to maintain the elastic properties of the fabric.
Price in Australia
Expect to pay around $25-30 AUD per pair through Under Armour’s Australian website or major sporting goods retailers. Multi-packs occasionally offer better value during sales.
3. lululemon UnderEase Mid-Rise thong
The lululemon UnderEase Mid-Rise thong brings the brand’s technical fabric expertise to your gym bag with a design that prioritises both comfort and invisibility. This mid-rise cut sits just below your natural waistline, offering more coverage than traditional low-rise options while still disappearing completely under your workout tights. Lululemon engineered these specifically for women who need underwear that handles sweat without sacrificing a smooth silhouette.
Best for
These work brilliantly if you’re after a thong that actually feels comfortable during intense cardio or strength training sessions. The mid-rise design makes these ideal for workouts where you’re constantly transitioning between standing and floor exercises, as the higher waistband prevents any gaping or rolling. Women who find standard thongs uncomfortable during movement will appreciate how the soft fabric and strategic construction eliminate the typical irritation points.
Fabric and breathability
Lululemon uses a blend of nylon and elastane that stretches in four directions while pulling moisture away from your skin effectively. The fabric breathes well enough to keep you comfortable through most gym sessions, though it’s synthetic rather than natural, so extremely sweaty workouts might leave you wanting better ventilation than what this material provides.
Fit, seams and staying power
The seamless sides and laser-cut edges ensure zero visible lines under even the tightest leggings. These stay exactly where you put them without riding up or shifting during squats, burpees, or running intervals.
“The mid-rise design makes these ideal for workouts where you’re constantly transitioning between standing and floor exercises.”
Things to know
Lululemon recommends washing these in cold water only and skipping the dryer to maintain the elastic properties. The fabric holds up well with proper care, and the gusset lining adds an extra layer of protection.
Price in Australia
Expect to pay around $18-22 AUD per pair through lululemon’s Australian stores or website. These often go on sale during seasonal promotions, making them one of the more affordable options when seeking the best underwear for gym sessions from premium activewear brands.
4. lululemon InvisiWear Mid-Rise thong
The lululemon InvisiWear Mid-Rise thong takes the brand’s signature comfort technology and strips it down to the absolute essentials. This ultra-lightweight design focuses on creating a barely-there feel while maintaining the performance features you need for serious training. Lululemon developed this specific line for athletes who want underwear that performs without any sensation of actually wearing it during movement-heavy workouts.
Best for
You’ll find these perfect if you’re chasing true invisibility under your gym gear without sacrificing actual support. The mid-rise cut works particularly well for workouts that involve constant hip flexion, like cycling classes or rowing sessions, where lower-rise options tend to create uncomfortable pressure points. Women who prefer thongs but typically find them distracting during exercise will appreciate how these genuinely disappear once you start moving.
Fabric and breathability
Lululemon uses an exceptionally thin nylon-spandex blend that weighs next to nothing while still managing moisture effectively. The fabric moves sweat away from your body quickly, though you’ll notice it’s designed more for invisibility than maximum airflow. Extremely humid conditions or prolonged cardio might test the limits of the breathability compared to natural fibre options.
Fit, seams and staying power
These feature bonded edges rather than traditional elastic, which eliminates any possibility of visible lines or dig-in marks. The thong back stays in place without shifting or bunching, and the gusset lining provides adequate coverage without adding bulk.
“The mid-rise cut works particularly well for workouts that involve constant hip flexion, like cycling classes or rowing sessions.”
Things to know
Lululemon suggests hand washing these to extend their lifespan, though machine washing on delicate works fine if you avoid heat. The fabric pills less than some synthetic alternatives.
Price in Australia
Expect to pay around $16-20 AUD per pair through lululemon Australia. These typically cost slightly less than the UnderEase line, making them solid value when searching for the best underwear for gym sessions that prioritise invisibility.
5. Alo Airbrush Invisible thong
The Alo Airbrush Invisible thong delivers on its name with a construction so smooth it genuinely disappears under your most form-fitting workout gear. Alo Yoga built these with their proprietary Airbrush fabric, the same material that makes their leggings a favourite among yoga instructors and fitness enthusiasts who demand both performance and polish. This thong targets women who refuse to compromise between looking sleek and feeling supported during training.
Best for
These excel if you’re seeking truly invisible coverage during barre classes, hot yoga sessions, or any workout where you’re constantly checking your form in studio mirrors. The ultra-smooth finish makes these ideal for wearing under lighter-coloured leggings without creating any visible texture or lines. Women who prioritise aesthetic perfection alongside functional comfort during lower-intensity workouts will find these hit the sweet spot.
Fabric and breathability
Alo uses a dense nylon-spandex blend that compresses slightly against your skin while maintaining surprising breathability. The fabric pulls moisture away effectively during moderate activity, though you’ll notice it’s engineered more for smoothness than maximum ventilation. Gentle yoga flows and Pilates sessions work brilliantly with this material, while intense cardio might push its moisture management limits.
Fit, seams and staying power
The thong features completely bonded construction without a single traditional seam to create friction or show through fabric. Everything stays locked in place throughout your workout, and the mid-rise waistband prevents any rolling or gaping during floor work.
“The ultra-smooth finish makes these ideal for wearing under lighter-coloured leggings without creating any visible texture or lines.”
Things to know
Alo recommends cold water washing and air drying to preserve the fabric’s compression properties. These run true to size based on Alo’s standard sizing chart.
Price in Australia
Expect to pay around $32-38 AUD per pair when purchasing through Alo Yoga’s international shipping or Australian stockists.
6. Gymshark seamless thong
The Gymshark seamless thong brings the brand’s cult following into your underwear drawer with a design that prioritises performance without the premium price tag. Gymshark engineered these specifically for their community of lifters and cardio enthusiasts who need affordable underwear that actually performs during intense training sessions. This thong targets budget-conscious athletes who refuse to sacrifice quality just because they’re not spending luxury brand money.
Best for
You’ll find these perfect if you’re searching for the best underwear for gym sessions without draining your wallet on expensive athleisure brands. The seamless construction works brilliantly for powerlifting sessions, CrossFit workouts, or any training that involves heavy compound movements where shifting underwear becomes a genuine distraction. Women who appreciate Gymshark’s inclusive sizing approach and want underwear that matches their existing workout wardrobe will feel right at home with these.
Fabric and breathability
Gymshark uses a lightweight polyamide-elastane blend that stretches comfortably in all directions while managing sweat reasonably well. The fabric breathes adequately during most gym activities, though you’ll notice it’s not quite as moisture-wicking as premium natural fibre options. Moderate to intense workouts work fine with this material’s capabilities.
Fit, seams and staying power
These feature truly seamless edges that eliminate visible panty lines completely under compression leggings. The thong stays put throughout your entire workout without riding up or creating uncomfortable friction points.
“The seamless construction works brilliantly for powerlifting sessions, CrossFit workouts, or any training that involves heavy compound movements.”
Things to know
Gymshark recommends machine washing on cold and avoiding tumble dryers to maintain elasticity. These run true to Gymshark’s standard sizing.
Price in Australia
Expect to pay around $12-16 AUD per pair through Gymshark’s Australian website, making these one of the most affordable options from established activewear brands.
7. Bombas Active no-show thong
The Bombas Active no-show thong applies the brand’s sock engineering expertise to underwear with impressive results. Bombas built their reputation on comfort-first design principles, and these thongs deliver that same attention to detail with features like a honeycomb mesh gusset for ventilation and strategically placed stretch zones that move with your body. This option targets women who want gym underwear from a brand known for durability and thoughtful construction rather than fashion-forward aesthetics.
Best for
You’ll appreciate these if you need all-day comfort that transitions seamlessly from your morning gym session to your work day. The no-show design works brilliantly for running, spinning, or circuit training where you need underwear that stays invisible under fitted activewear. Women who value brands with give-back programmes will connect with Bombas’s one-for-one donation model, where each purchase supports someone experiencing homelessness.
Fabric and breathability
Bombas uses a moisture-wicking fabric blend that pulls sweat away from your skin faster than standard cotton options. The honeycomb mesh panel in the gusset adds extra ventilation right where you need it most during intense workouts.
Fit, seams and staying power
These feature flat seams throughout that prevent chafing even during long training sessions. The no-show cut disappears completely under leggings, and the stretchy waistband stays put without rolling or digging in.
“The honeycomb mesh panel in the gusset adds extra ventilation right where you need it most during intense workouts.”
Things to know
Bombas recommends machine washing on cold and tumble drying on low. These run true to size.
Price in Australia
Expect to pay around $28-35 AUD per pair when ordering through international shipping, as Bombas doesn’t currently operate direct Australian retail.
8. Athleta Ritual thong
The Athleta Ritual thong combines the brand’s commitment to sustainable practices with performance features that work for serious training sessions. Athleta designed these with recycled nylon fabric and a focus on creating underwear that handles sweat while minimising environmental impact. This thong targets women who want their workout gear to reflect both their fitness goals and their values around sustainability without compromising on actual performance during demanding gym sessions.
Best for
You’ll find these perfect if you’re seeking eco-conscious underwear that still delivers on moisture management and comfort during varied workout intensities. The thong design works brilliantly for yoga, barre classes, or moderate cardio where you need invisible coverage under form-fitting leggings. Women who prefer mid-rise cuts that sit securely at the natural waistline without rolling during core work will appreciate how these stay comfortable throughout your entire session.
Fabric and breathability
Athleta uses recycled nylon blended with elastane that stretches in multiple directions while pulling moisture away from your skin effectively. The fabric breathes adequately during most gym activities, though you’ll notice it’s synthetic construction means extremely sweaty sessions might not get the same ventilation as natural fibre alternatives. The material dries quickly between washes and maintains its shape well over time.
Fit, seams and staying power
These feature seamless construction along the sides that eliminates visible lines completely under compression fabric. The thong stays in place throughout your workout without shifting or creating friction points, and the laser-cut edges prevent any digging or marking on your skin.
“The thong design works brilliantly for yoga, barre classes, or moderate cardio where you need invisible coverage under form-fitting leggings.”
Things to know
Athleta recommends machine washing cold and line drying to maintain fabric integrity. These run true to Athleta’s standard sizing, which tends slightly generous compared to other activewear brands.
Price in Australia
Expect to pay around $22-28 AUD per pair when ordering through Athleta’s international shipping options, as the brand doesn’t currently maintain direct Australian retail presence, making these moderately priced when seeking the best underwear for gym sessions from sustainability-focused brands.
9. Girlfriend Collective Cheeky Hipster
The Girlfriend Collective Cheeky Hipster brings the brand’s sustainability mission to your gym bag with underwear made entirely from recycled materials. Girlfriend Collective engineered these with 79% recycled polyester and 21% elastane, creating a hipster cut that offers more coverage than thongs while still disappearing under most workout leggings. This option targets women who want environmentally responsible choices without sacrificing the performance features needed for intense training sessions.
Best for
You’ll appreciate these if you prefer moderate coverage that sits between full briefs and minimal thongs during your workouts. The cheeky cut works brilliantly for weightlifting sessions, boot camp classes, or any gym activity where you need underwear that stays comfortable without riding up into uncomfortable territory. Women who find thongs too minimal but hate visible panty lines will discover these offer the perfect middle ground.
Fabric and breathability
Girlfriend Collective uses 100% recycled plastic bottles transformed into smooth, stretchy fabric that manages moisture effectively during moderate to intense workouts. The material pulls sweat away from your skin reasonably well, though you’ll notice it’s synthetic construction means you won’t get the same natural breathability as bamboo or merino wool alternatives.
Fit, seams and staying power
These feature flat seams that prevent chafing and stay invisible under compression fabric. The hipster cut stays put throughout your entire workout without shifting or creating bunching.
“The cheeky cut works brilliantly for weightlifting sessions, boot camp classes, or any gym activity where you need underwear that stays comfortable without riding up.”
Things to know
Girlfriend Collective recommends machine washing cold and line drying to extend fabric life. These run true to size.
Price in Australia
Expect to pay around $18-24 AUD per pair through international shipping, making these affordable when seeking the best underwear for gym sessions from ethical brands.
10. Knix leakproof no-show thong
The Knix leakproof no-show thong adds period protection to your gym routine without sacrificing the invisible profile you need under fitted activewear. Knix engineered these with their patented leakproof technology that absorbs menstrual flow, sweat, and discharge while maintaining the sleek silhouette of a traditional no-show thong. This option targets women who refuse to skip gym sessions during their period and want underwear that handles both workout moisture and menstrual protection without bulk or visible lines.
Best for
You’ll find these perfect if you’re tired of choosing between period protection and workout comfort during your menstrual cycle. The leakproof gusset works brilliantly for light to moderate flow days when you’re hitting the gym, running errands after your workout, or simply want backup protection alongside a tampon or cup. Women who experience breakthrough bleeding during intense exercise will appreciate the added security these provide without the bulk of traditional period underwear.
Fabric and breathability
Knix uses a moisture-wicking outer layer combined with an absorbent core that holds up to one tampon’s worth of fluid. The fabric pulls workout sweat away effectively while the leakproof gusset handles menstrual flow, though you’ll notice the multilayer construction means slightly less breathability than single-layer options during extremely humid conditions.
Fit, seams and staying power
These feature bonded edges that eliminate visible lines completely under compression leggings. The thong stays in place throughout your workout without the leakproof gusset creating any bunching or discomfort.
“The leakproof gusset works brilliantly for light to moderate flow days when you’re hitting the gym, running errands after your workout, or simply want backup protection.”
Things to know
Knix recommends rinsing in cold water immediately after wear, then machine washing. These run true to Knix’s standard sizing.
Price in Australia
Expect to pay around $35-42 AUD per pair through international shipping when seeking the best underwear for gym sessions that double as period protection.
11. Tracksmith Brighton briefs
The Tracksmith Brighton briefs bring the brand’s obsessive focus on running performance to your base layer with a design that prioritises comfort during long-distance efforts. Tracksmith engineered these specifically for runners who need underwear that handles miles of repetitive motion without creating friction or discomfort. This option targets serious runners who want understated, functional underwear from a brand that understands the specific demands of distance training better than most mainstream activewear companies.
Best for
You’ll find these perfect if you’re logging serious mileage and need underwear that disappears during long runs. The brief cut works brilliantly for marathon training, tempo runs, or any distance session where chafing becomes a genuine concern after the first few kilometres. Runners who appreciate traditional brief styling over thongs or hipsters will value how these provide full coverage without any bunching or riding up during high-cadence running.
Fabric and breathability
Tracksmith uses a lightweight nylon-spandex blend that moves sweat away from your skin efficiently during sustained cardio efforts. The fabric breathes well enough to keep you comfortable through long summer runs, though it’s synthetic construction means you won’t get the natural antimicrobial properties of bamboo or merino alternatives.
Fit, seams and staying power
These feature flatlock seams that sit flush against your skin without creating any friction points during repetitive motion. The briefs stay exactly where you put them throughout your entire run.
“The brief cut works brilliantly for marathon training, tempo runs, or any distance session where chafing becomes a genuine concern after the first few kilometres.”
Things to know
Tracksmith recommends machine washing cold and air drying. These run true to size based on Tracksmith’s sizing chart.
Price in Australia
Expect to pay around $30-38 AUD per pair through international shipping when seeking the best underwear for gym sessions focused on running performance.
12. Branwyn Essential Bikini
The Branwyn Essential Bikini delivers Australian-made quality with a focus on natural materials and ethical manufacturing that appeals to women seeking locally produced workout underwear. Branwyn crafted these with organic cotton and bamboo blends that prioritise skin health alongside performance, making them perfect for gym-goers who prefer natural fibres over synthetic alternatives. This bikini cut targets women who want comfortable, everyday underwear that transitions seamlessly from training sessions to the rest of their day.
Best for
You’ll appreciate these if you’re after natural fibre underwear that handles moderate workout intensity without the synthetic feel of most performance options. The bikini cut works brilliantly for yoga, light cardio, or strength training where you need comfortable coverage that stays invisible under looser-fitting gym shorts or relaxed workout pants. Women who prioritise supporting Australian businesses and ethical manufacturing will connect with Branwyn’s transparent production practices.
Fabric and breathability
Branwyn uses organic cotton blended with bamboo viscose that breathes exceptionally well during lower-intensity workouts. The natural fibres allow better airflow than synthetic alternatives, though you’ll notice they don’t wick moisture quite as aggressively during extremely sweaty sessions.
Fit, seams and staying power
These feature soft elastic waistbands that prevent digging without sacrificing secure fit. The bikini cut stays comfortable throughout your workout without riding up or shifting.
“The natural fibres allow better airflow than synthetic alternatives, though you’ll notice they don’t wick moisture quite as aggressively during extremely sweaty sessions.”
Things to know
Branwyn recommends washing in cold water and line drying to preserve natural fibre integrity. These run true to standard Australian sizing.
Price in Australia
Expect to pay around $25-30 AUD per pair through Branwyn’s Australian website, making these competitively priced when seeking the best underwear for gym sessions from local ethical brands.
13. Boody Boyleg briefs
The Boody Boyleg briefs offer Australian-made comfort with a focus on natural bamboo viscose that breathes exceptionally well during active movement. Boody designed these with an extended leg length that prevents ride-up completely, making them perfect for gym-goers who want more coverage than thongs or bikini cuts provide. This boyleg style targets women seeking modest, comfortable underwear that handles workout intensity without sacrificing breathability or developing that sticky synthetic feel common with most performance fabrics.
Best for
You’ll find these perfect if you prefer fuller coverage during squats, lunges, or any leg-focused training where shorter styles tend to ride up uncomfortably. The boyleg cut works brilliantly for women who experience inner thigh chafing during cardio sessions or those who simply feel more confident with additional coverage under their gym shorts or looser workout pants. Gym-goers who prioritise natural materials over synthetic performance fabrics will appreciate how these handle sweat without the clinical feel of most technical underwear.
Fabric and breathability
Boody uses bamboo viscose that allows exceptional airflow during moderate to intense workouts. The natural fibres regulate temperature effectively and resist odour buildup naturally, though you’ll notice they absorb moisture rather than wicking it away aggressively like synthetic alternatives. This means they feel soft and comfortable but might stay damp longer during extremely sweaty sessions.
“The natural fibres regulate temperature effectively and resist odour buildup naturally, making them ideal for extended wear.”
Fit, seams and staying power
These feature soft flat seams that prevent chafing along the leg openings where boyleg styles typically create friction. The extended leg stays put throughout your entire workout without rolling or bunching.
Things to know
Boody recommends machine washing cold and line drying to maintain fabric softness. These run true to standard Australian sizing.
Price in Australia
Expect to pay around $20-25 AUD per pair through Boody’s Australian website, making these affordable when seeking the best underwear for gym sessions from local eco-conscious brands.
14. Tommy John Cool Cotton thong
The Tommy John Cool Cotton thong combines the brand’s innovative fabric technology with traditional cotton comfort in a hybrid design that targets gym-goers seeking natural feel without sacrificing performance. Tommy John engineered these with their proprietary Cool Cotton fabric that behaves differently than standard cotton, managing moisture more effectively while maintaining the soft, breathable feel that makes cotton popular for everyday wear. This thong appeals to women who want underwear that bridges the gap between technical performance fabrics and natural materials during moderate workout sessions.
Best for
You’ll appreciate these if you’re seeking cotton-like comfort during lighter gym activities where synthetic fabrics feel too clinical or irritating against your skin. The thong design works brilliantly for yoga, stretching routines, or moderate cardio where you need invisible coverage under fitted leggings without the plasticky sensation of fully synthetic options. Women with sensitive skin who react poorly to nylon or polyester blends will find these offer a gentler alternative that still handles sweat better than traditional cotton underwear.
Fabric and breathability
Tommy John uses Cool Cotton technology that wicks moisture more effectively than standard cotton while maintaining natural breathability. The fabric pulls sweat away from your skin faster than conventional cotton briefs, though you’ll notice it doesn’t dry quite as quickly as fully synthetic alternatives.
“The fabric pulls sweat away from your skin faster than conventional cotton briefs, making them suitable for moderate intensity workouts.”
Fit, seams and staying power
These feature seamless construction along the sides that eliminates visible lines under compression fabric. The thong stays comfortable throughout your workout without shifting or creating friction points.
Things to know
Tommy John recommends machine washing warm and tumble drying low. These run true to Tommy John’s standard sizing.
Price in Australia
Expect to pay around $38-45 AUD per pair through international shipping when seeking the best underwear for gym sessions that prioritise cotton comfort with improved moisture management.
15. Amazon Essentials cotton bikini brief
The Amazon Essentials cotton bikini brief delivers reliable basics for gym-goers who want straightforward comfort without premium pricing or technical fabric claims. Amazon designed these as everyday essentials that handle light to moderate workout intensity through simple construction and classic cotton comfort. This bikini cut targets women seeking affordable, no-frills underwear that covers the fundamentals without the marketing hype or inflated price tags attached to most activewear brands.
Best for
You’ll appreciate these if you’re building out your gym underwear rotation on a budget and need multiple pairs without spending hundreds on premium options. The bikini cut works well for moderate cardio, light strength training, or yoga sessions where you don’t need advanced moisture-wicking properties. Women who prefer traditional cotton comfort over synthetic performance fabrics will find these handle everyday gym sessions adequately.
Fabric and breathability
Amazon uses standard cotton jersey that feels soft against your skin and breathes naturally during lower-intensity workouts. The fabric absorbs moisture rather than wicking it away aggressively, which means you’ll notice these work better for moderate sessions than extremely sweaty training days.
Fit, seams and staying power
These feature basic cotton construction with standard elastic waistbands that stay comfortable without digging in. The bikini cut maintains its position reasonably well during most gym activities, though you might experience some shifting during high-intensity movements.
“The bikini cut maintains its position reasonably well during most gym activities, making them suitable for everyday training.”
Things to know
Amazon recommends machine washing warm and tumble drying. These run true to standard sizing and come in multipacks for better value.
Price in Australia
Expect to pay around $8-12 AUD per pair through Amazon Australia, making these the most affordable option when seeking the best underwear for gym sessions on a tight budget.
Your next pair, sorted
Finding the best underwear for gym sessions transforms your entire workout experience once you stop settling for basic cotton briefs that bunch, chafe, or show through your leggings. The fifteen options above cover everything from budget-friendly basics to premium performance pieces, with features ranging from leakproof technology to sustainable bamboo construction that handles sweat naturally. Your ideal choice depends on your specific workout intensity, preferred coverage level, and whether you prioritise natural fibres over synthetic moisture-wicking capabilities.
Men dealing with chafing or discomfort during training should explore our bamboo boxer briefs with built-in pouch support that eliminate the constant adjustment issue completely. The structured support keeps everything comfortable through squats, deadlifts, and long cardio sessions without compression or restriction. Investment in proper gym underwear pays off immediately through better focus during your workouts and zero mid-session adjustments stealing your attention from your form.