10 Best Men’s Performance Underwear for Workouts

Any bloke who’s ever left the gym with a burning rash or spent a long run fighting with bunching boxers knows this: the right underwear is every bit as critical as the right shoes. High-output training exposes the weakest links in your kit—chafing, sweat build-up, overheating, awkward ride-up, and support that just doesn’t cut it. Yet, most men still rely on everyday undies that simply weren’t built for the demands of serious movement.

Performance underwear is designed to solve these nagging issues. Built with advanced fabrics and clever features, the best pairs keep you dry, cool, and chafe-free, no matter how intense the session. Whether you’re after odour control for marathon days, a pouch that actually supports, or a fabric that won’t roast your valuables on a summer run, there’s now a solution for every kind of workout—and every body.

This guide spotlights the top 10 men’s performance underwear, each selected for their ability to wick moisture, regulate temperature, provide reliable support, and stand up to the rigours of Aussie training. Leading the lineup is SLY Collective’s Bamboo Performance Boxer Briefs, an Australian innovation designed to eliminate chafing and keep you sorted from gym floor to airport lounge. Following that, you’ll find nine more global standouts—each reviewed for fit, function, and that all-important comfort factor.

For each option, you’ll find a breakdown of standout features, pros and cons, best-use scenarios, and where to buy. Ready to upgrade your routine? Let’s check out the best pairs for every kind of workout.

1. SLY Collective Men’s Bamboo Performance Boxer Briefs (Best Anti-Chafing & Temperature-Regulating Option)

SLY Collective has redefined workout underwear in Australia with its bamboo boxer briefs and a patented anatomical pouch that keeps everything in place. Designed to eliminate skin-on-skin friction, these boxer briefs combine clever engineering with eco-friendly bamboo viscose so you stay cool and dry through every rep, sprint or cycle. The longer 6" leg length prevents ride-up, while an integrated pocket makes them a go-anywhere choice—from gym bag to carry-on.

Features and Benefits

• Patented inner pouch: Separates and supports your anatomy to banish chafing during dynamic movement.
• 6" inseam: Longer leg coverage locks the briefs in position for squats, sprints and road rides.
• Bamboo viscose-elastane blend: Naturally moisture-wicking, temperature-regulating and odour-resistant for all-day freshness.
• Hidden “nifty pocket”: Discreet storage for keys, card or passport—ideal for gym-to-street styling and travel convenience.
• Sustainable design: Bamboo requires minimal water, produces low chemical runoff, and is fully biodegradable.
• Aussie street style: Tattoo and graffiti-inspired prints give your gym kit an unmistakable down-under edge.

Each feature has been carefully considered to enhance performance: the pouch offers structured support, the leg length prevents bunching, and the eco-fabric helps you push harder without feeling weighed down.

Performance in the Gym

Whether you’re powering through deadlift PRs, tackling a HIIT circuit or clocking miles on the treadmill, these boxer briefs deliver consistent comfort. The anatomical pouch holds everything securely, so you won’t need mid-workout adjustments. Sweat is drawn away from the skin by the bamboo fibres, while the longer legs keep seams and hems from migrating upwards. After a punishing spin class, you’ll emerge without the usual hotspots or sticky overheating—just dry, chafe-free confidence.

Pros & Cons

Pros

• Eliminates chafing with an anatomical pouch
• Excellent moisture management and odour resistance
• Sustainable, biodegradable fabric
• Handy pocket for small essentials
• Free exchanges and Comfort Guarantee on first pair

Cons

• Premium price point
• Pocket contents can shift under very tight compression tights

Who Should Choose SLY Collective?

Pick SLY Collective if you’ve ever felt the burn of chafing or the discomfort of overheating during a workout. They’re ideal for active men who demand reliable support and appreciate a touch of Aussie flair—and for travellers who value a secret pocket for passports or cards. If sustainability and quality are high on your checklist, these bamboo boxer briefs deliver on all fronts.

2. Mack Weldon AirKnitx Boxer Brief (Best Overall Performance Underwear)

Mack Weldon has built a loyal following on the back of its modern basics, and the AirKnitx Boxer Brief is its crowning achievement. Crafted with a proprietary blend of polyamide, polyester and elastane, these briefs feel almost weightless while still offering the support you need for everything from gym sessions to desk days. In our trials, the standout combination of a seamless waistband, grippy leg bands and a fly-less elastic pouch kept the undies firmly in place, letting you focus on your workout rather than readjusting your kit.

Backed by independent MensHealth testers, the AirKnitx Boxer Brief ranks highly for its balance of breathability, durability and moisture management. Whether you’re pounding the pavement or powering through a CrossFit class, this pair will navigate heat and sweat with ease, all while maintaining a smooth silhouette under shorts or tights.

Key Features

• Fabric blend: 50% polyamide, 33% polyester, 17% elastane for a feather-light feel and four-way stretch.
• Seamless waistband: Sits smooth against the skin to prevent pinching and rolling.
• Grip leg bands: Keeps the 5″ inseam locked in position, eliminating ride-up during dynamic movements.
• Fly-less elastic pouch: Provides snug support without the bulk of a traditional fly.
• Mesh cool zones: Strategically placed for enhanced airflow, reducing overheating in high-sweat areas.

Each element works together to deliver a next-level fit: the pouch cradles your anatomy, the waistband stays put, and the mesh zones crank up the ventilation when things get hot.

Laboratory Benchmark: Thermal & Moisture Testing

Performance fabrics are more than marketing jargon—they’re measurable in the lab. Mack Weldon’s AirKnitx Boxer Brief is evaluated using the ASTM standard method for thermal and evaporative resistance—ASTM F1868-23 (“Sweating Hot Plate” test). You can explore the full specification here: https://www.astm.org/f1868-23.html. In essence, low thermal resistance and high evaporative cooling scores reveal how quickly the fabric moves heat and moisture away from your body. AirKnitx consistently delivers rapid moisture-transfer rates, so you stay drier, cooler and more comfortable during intense or humid workouts.

Pros & Cons

Pros

• Ultra-breathable and fast-drying
• Durable construction resists pilling and sagging
• Secure fit under shorts, tights or compression wear
• Discreet, minimal branding

Cons

• No traditional fly may not suit everyone
• Seasonal colours can sell out quickly

Ideal Use Cases

If you want one pair that does it all, Mack Weldon’s AirKnitx Boxer Brief comes highly recommended. It excels in high-output environments—spin class, hot yoga, CrossFit or long runs—where moisture control and unrestricted movement are non-negotiable. Yet its sleek profile makes it equally suitable for everyday wear under work trousers or casual shorts, too.

3. Under Armour Performance Tech Boxer Brief (Best Budget-Friendly Workout Underwear)

If you’re after solid performance without a hefty price tag, Under Armour’s Performance Tech Boxer Briefs tick every box. Part of the brand’s HeatGear™ line, they’re engineered to move sweat away from your skin using the Moisture-Transport System, keeping you dry during any workout. With a simple yet effective design and multi-pack options, these briefs are a wallet-wise way to upgrade your gym kit.

Key Features

• Fabric blend: 90% polyester, 10% elastane for lightweight compression and four-way stretch.
• Moisture-Transport System: Wicks sweat swiftly to the surface, where it evaporates.
• Flatlock seams: Lie flat against the skin to reduce rubbing and irritation.
• 4-inch or 6-inch inseam options: Choose the length that suits your training style.
• Anti-odor technology: Inhibits bacterial growth to keep things fresher for longer.

These core elements combine to deliver dependable support and comfort—no frills, just practical performance.

Moisture-Wicking & Support

Under Armour’s quick-dry fabric excels at pulling moisture away from your body, so you never feel bogged down by sweat. The snug pouch construction offers a secure cradle, preventing excessive movement during sprints, lifts or burpees. While they’re not as luxuriously soft as some premium pairs, you’ll appreciate the confidence of knowing your undies are working as hard as you are.

Pros & Cons

Pros

• Exceptional value, available in multi-packs
• Fast-drying fabric and anti-odor finish
• Flatlock seams minimise chafing
• Reliable fit under shorts or leggings

Cons

• Bold Under Armour logo on waistband may not suit all tastes
• Less plush feel compared to modal or bamboo blends

Best For Daily Training

These boxer briefs are perfect for CrossFit WODs, HIIT circuits and everyday gym sessions—any situation where you need moisture management and sturdy support without splashing out. If you’re on a budget but refuse to compromise on performance, the Performance Tech Boxer Briefs should be your go-to pick.

4. Smartwool Merino 150 Boxer Brief (Best for Odour Control & Temperature Regulation)

When your workout stretches into hours or even days, keeping odours at bay and managing heat becomes crucial. Smartwool’s Merino 150 Boxer Brief steps up with its fine-gauge merino wool blend that feels soft against the skin yet performs like a technical fabric. Whether you’re trail running, backpacking or tackling back-to-back gym sessions, these boxer briefs will help you stay fresh and comfortable, even on multi-day adventures.

Features

• Fabric composition: 87% merino wool, 9% nylon, 4% elastane for natural stretch and shape retention.
• Thermo-regulating: Merino fibres adapt to your body temperature—warm when it’s cool, cool when it’s warm.
• Odour resistance: Naturally antimicrobial wool minimises bacterial growth, keeping you smelling cleaner for longer.
• Flatlock seams: Smooth, low-profile stitching reduces friction across thighs and waist.
• 4″ inseam: Offers a balance between coverage and freedom of movement for dynamic workouts.

Each feature plays its part: merino’s natural breathability moves moisture away, while nylon adds durability and elastane ensures the briefs bounce back to shape after every stretch and squat.

Merino for Performance

Merino wool isn’t just for winter layers—it excels in high-output activities. Its fine fibres wick sweat from the skin and release moisture to the air, so you avoid that clammy, sticky feeling. Meanwhile, merino’s thermo-regulating properties create a micro-climate next to your skin, stabilising temperature and preventing overheating during uphill climbs or long runs. Best of all, the wool’s inherent odour control means you can pack fewer pairs for multi-day outings without trading off freshness.

Pros & Cons

Pros

• Keeps you smelling fresher over extended wear
• Soft, itch-free next-to-skin feel
• Thermo-regulating across variable conditions
• Durable, retains shape

Cons

• Higher price point than synthetic briefs
• Slower to dry after heavy sweat or washing

Best For Endurance Workouts

If you’re logging long miles on the trail, tackling multi-day hikes or simply hate changing undies after every session, the Merino 150 Boxer Brief is your go-to. It’s perfect for endurance athletes who value natural performance and need odour control that synthetic fabrics can’t match.

5. Lululemon Built to Move Boxer (Best for Flexibility & Range of Motion)

When your workout demands full mobility—from deep squats to explosive lunges—you need underwear that moves as freely as your body does. Lululemon’s Built to Move Boxer is engineered precisely for that purpose. Borrowing performance fabric technology from their famed activewear, these boxers prioritize stretch and support so you can tackle any movement without constraint.

Whether you’re flowing through a vinyasa sequence, rolling on the mats, or testing your limits in a functional training session, the Built to Move Boxer delivers a barely-there feel with enough structure to keep everything in place. No awkward tugging or ride-up—just seamless transitions from one rep to the next.

Key Features

• Luxtreme™ fabric: A silky blend of nylon and Lycra that wicks moisture, dries quickly and offers four-way stretch.
• Ergonomic pouch: Contoured to cradle and separate, providing light support without restricting movement.
• Inseam choices: Available in 5″ or 7″ leg lengths to suit your preference for coverage or maximum freedom.
• Flatlock seams: Minimise chafing by lying flush against the skin, even during high-intensity drills.
• Non-functional fly: Keeps the front profile smooth and snag-free under tights or shorts.

Each detail is tuned to enhance your range of motion while keeping comfort at the forefront—no bunching, no binding.

Flex & Stretch Analysis

What sets the Built to Move Boxer apart is its fabric’s ability to conform and recover. During dynamic stretches or rapid shifts of direction, the Luxtreme™ weave expands and contracts almost like a second skin. In practical terms, you won’t feel any pull when you lunge deep or twist at the waist; the material simply follows your lead. This adaptability also cuts down on heat build-up, as the quick-dry properties actively pull sweat away from your body. In short, these boxers strike a rare balance between soft, breathable comfort and resilient stretch.

Pros & Cons

Pros

• Exceptional freedom of movement thanks to true four-way stretch
• Fast-dry, moisture-wicking fabric keeps you feeling fresh
• Ergonomic pouch enhances light support without bulk
• Choice of leg lengths to match your workout style

Cons

• Premium price tag compared to entry-level options
• Limited colour range, mostly classic neutrals

Best for Dynamic Movements

If your training revolves around activities that demand agility—yoga, martial arts, functional fitness or plyometrics—the Built to Move Boxer should be your go-to. It’s designed to work in tandem with every twist, jump and kick, so you can focus on hitting your flow instead of fussing with your underwear.

6. SAXX Non-Stop Stretch Cotton Boxer Brief (Best Ball Support)

When your workout demands unshakeable support, simply pulling up a standard pair of briefs won’t cut it. SAXX Underwear Co. nailed this challenge with its patented BallPark Pouch™, first unveiled in 2007 and continually refined since. The Non-Stop Stretch Cotton Boxer Brief combines that signature pouch with a breathable stretch-cotton blend and abrasion-resistant seams, so you can sprint, lunge and leap without ever worrying about distraction—or discomfort.

Key Features

• Patented BallPark Pouch™: A three-dimensional hammock that cradles and separates your anatomy, drastically reducing bounce and skin-on-skin friction.
• Stretch-Cotton Blend: 90% cotton and 10% elastane for natural softness with just enough give to move freely.
• Anti-Odour Finish: Embedded silver-ion technology keeps nasties at bay, so you stay fresher through back-to-back training sessions.
• Flatlock Seams: Sit flush against your skin to virtually eliminate hot spots, even when you’re powering through sprints or plyometrics.
• Wide, Grippy Waistband: Ensures the 6″ inseam stays locked in place, eliminating ride-up under shorts or compression tights.

Comfort & Support Evaluation

In real-world trials—from fast-paced HIIT classes to uphill sprints—SAXX’s BallPark Pouch™ proved its worth time and again. By creating a separate pocket for your valuables, it virtually eradicates friction, meaning no more grinding or pinching across your thighs. The cotton-rich fabric feels soft against the skin, while the handful of elastane fibres guarantees that the pouch rebounds instantly after every motion. You’ll notice exceptional stability under both heavy lifting and rapid-fire agility drills, with zero need for mid-session adjustments.

Pros & Cons

Pros

• Unmatched support thanks to the BallPark Pouch™
• High-comfort stretch-cotton keeps you cool and chafe-free
• Anti-odor treatment ideal for multi-hour sessions
• Flatlock seams virtually eliminate hotspots
• Secure 6″ inseam holds position through any movement

Cons

• Bold SAXX branding on the waistband may not suit minimalist tastes
• Limited fabric and colour options compared to some synthetic lines

Suitable for High-Impact Training

If your routine includes explosive box jumps, heavy deadlifts or all-out track intervals, these boxer briefs will become your go-to. Sprint drills, CrossFit WODs and plyometric circuits all demand unwavering support—and the Non-Stop Stretch Cotton Boxer Brief delivers exactly that, keeping you locked in and focused on the workout ahead.

7. Tommy John Second Skin Boxer Brief (Best Luxury Performance Underwear)

Tommy John’s Second Skin Boxer Brief is the epitome of performance meets luxury. Crafted from an ultra-soft micro-modal blend and engineered for seamless support, these briefs feel more like a second skin than ordinary underwear. Designed with busy athletes and frequent travellers in mind, they deliver everyday comfort, odour resistance and packability—all wrapped up in a sleek profile.

Key Features

• Fabric blend: 90% micro-modal, 10% spandex provides a silky, breathable feel with four-way stretch.
• Quick-draw fly: An innovative overlapping fly opening for easy access without sacrificing a smooth front profile.
• Contoured pouch: Ergonomically shaped to cradle and separate, reducing friction and bounce during dynamic movement.
• Flatlock seams: Lie flat against the skin to eliminate hotspots and chafing, even under compression tights.
• Lightweight construction: Packs down small for gym bags or carry-ons, making them a travel essential.

Each element has been fine-tuned to offer a combination of soft luxury and functional performance—ideal for anyone who refuses to compromise on comfort.

Pros & Cons

Pros

• Sumptuously smooth next-to-skin feel
• Excellent odour resistance keeps you feeling fresh
• Fly design balances convenience with a clean silhouette
• Dries quickly and retains shape through multiple wears

Cons

• Premium price tag reflects luxury positioning
• Limited colour palette compared to some athletic ranges

Best for Athletes Who Travel

Whether you’re hopping between flights or squeezing in a hotel-gym session, the Second Skin Boxer Brief rises to the occasion. Its quick-dry, odour-resistant fabric means you can wear a single pair for multiple days without sacrificing freshness. The pack-and-go lightness makes them a staple for carry-ons, while the refined aesthetic lets you transition effortlessly from a workout to a business meeting or evening event.

8. CDLP Tencel Lyocell Boxer Brief (Best Sustainable Performance Underwear)

Swedish label CDLP is on a mission to prove that high-performance underwear can also be kind to the planet. Their Tencel Lyocell Boxer Brief blends cutting-edge fabric technology with a commitment to closed-loop production, resulting in skivvies that feel indulgent and leave minimal environmental footprint. If you’re the kind of athlete who cares as much about your carbon goal as your PR, this pair deserves a spot in your rotation.

With a silky-smooth jersey pouch and a clean, minimalist design, CDLP’s boxer brief manages moisture, regulates heat and recovers from every stretch. They look and feel like a true upgrade, yet the real secret lies beneath the surface: every fibre of Tencel Lyocell is produced in a fully enclosed process that recycles water and solvents, minimises waste and cuts down on chemical runoff. In short, you get luxurious comfort and performance—without the guilt.

Key Features

• Fabric composition: 95% Tencel Lyocell, 5% elastane for an ultra-soft hand feel and four-way stretch.
• 6″ inseam: Offers ideal coverage for most athletic activities while preventing ride-up.
• Smooth jersey pouch: Ergonomic shape cradles your anatomy, reducing friction and bounce.
• Non-functional fly: Maintains a sleek silhouette beneath shorts or tights.
• Minimal seams: Strategically placed flatlock stitching cuts hotspots and enhances durability.

Each feature is calibrated for daily training—from spin classes and studio sessions through to road runs—ensuring nothing distracts you from your goals.

Sustainability & Performance

Tencel Lyocell stands out for its closed-loop manufacturing: wood pulp is dissolved with nontoxic solvents, spun into fibre, then recycled back into fresh solution. This process consumes far less water than conventional fabrics and nearly eliminates chemical discharge. On the ground, that means briefs that wick sweat away from your skin, dry in a flash and maintain their shape wash after wash. In performance terms, you get the moisture-management of a micro-modal or synthetic blend, paired with the eco-credentials of responsibly sourced wood pulp.

Pros & Cons

Pros

• Impeccably soft next-to-skin feel
• Excellent moisture-wicking and quick-dry properties
• Closed-loop Tencel production reduces environmental impact
• Clean, understated design works under any kit

Cons

• Sizing can run slightly small—consider sizing up
• Higher price reflects premium materials and ethical manufacturing

Best for Eco-Conscious Athletes

If you’re training with an eye on sustainability—whether that’s daily gym sessions, urban cycling or light trail runs—CDLP’s Tencel Lyocell Boxer Brief delivers. It’s the perfect choice for athletes who refuse to compromise on performance or the planet, and for anyone who wants a pair of underwear as dedicated to eco-friendly practice as they are to functional comfort.

9. Boody Men’s Bamboo Performance Underwear (Best for Sensitive Skin & Sustainability)

Boody’s Men’s Bamboo Performance Underwear offers a gentle yet high-functioning solution for anyone whose skin protests against synthetic blends. Crafted in Australia from sustainably harvested bamboo viscose, these boxer briefs marry natural softness with technical moisture-wicking and breathability. The result is an undie that feels more like a second skin—ideal for those with sensitive skin or anyone seeking an eco-friendly alternative to conventional work-out skivvies.

Boody have paired their signature bamboo fabric with organic cotton trim and just enough elastane to ensure the brief holds its shape. A low-profile keyhole fly and supportive contoured pouch provide uncomplicated access and reliable hold, while a 5″ inseam keeps ride-up to an absolute minimum. Whether you’re flowing through a yoga sequence or tackling a gentle gym session, these briefs keep irritation, itch and odours at bay without sacrificing performance.

Features

• Bamboo viscose base: Ultra-soft, breathable fibres that naturally wick sweat and regulate temperature.
• Organic cotton trim: Reinforces waistband and fly opening for added durability.
• 5″ inseam: Strikes the balance between coverage and freedom of movement.
• Contoured pouch: Gently cradles and separates to reduce friction and bounce.
• Keyhole fly: Simplifies bathroom breaks while maintaining a seamless front profile.
• Blend: Typically 92% bamboo viscose, 8% elastane for four-way stretch and shape recovery.

Each element is chosen to maximise comfort—no rough tags or scratchy waistbands—so you can focus on your workout (or your day) without distraction.

Skin-Friendly & Sustainable Credentials

Boody’s bamboo fabric carries OEKO-TEX® certification, guaranteeing it’s free from harmful substances that can trigger irritation. Bamboo viscose is inherently hypoallergenic and antibacterial, meaning it resists odour-causing microbes without chemical treatments. On top of that, bamboo cultivation uses far less water than cotton farming and requires no pesticides. At end of life, these briefs are fully biodegradable, leaving a smaller footprint from waistband to inseam.

Pros & Cons

Pros

• Silky softness ideal for sensitive or allergy-prone skin
• Excellent moisture transport and odour control
• Eco-friendly production and biodegradable end-of-life
• Simple design with keyhole fly and stabilising pouch

Cons

• Less structured support for very high-impact training
• Fewer style and colour options compared to mainstream athletic brands

Who Should Choose Boody?

These bamboo boxer briefs are perfect if you’ve ever experienced redness, chafing or irritation from regular synthetic blends. They’re especially well suited to low-impact activities—yoga, Pilates, walking—and to those who value sustainable, toxin-free clothing next to the skin. If your priority is gentle performance with minimal environmental impact, Boody delivers both in one slim package.

10. SHEATH Men’s Separative Pouch Underwear (Urologist-Recommended for Testicular Health)

SHEATH has earned its reputation by tackling a problem few brands address: keeping the male anatomy cool, separated and supported. Endorsed by urologists for its dual-pouch architecture, SHEATH’s underwear is designed to reduce heat transfer and friction, which can negatively affect sperm production and testicular comfort. If you’re serious about long workouts or concerned about reproductive health, this pouch-centric design delivers medical-grade support without sacrificing everyday wearability.

Key Features

• Dual-pouch system: Two overlapping layers cradle and separate—one for the testicles, one for the penis—cutting bounce and chafing.
• Fabric blend: Typically 55% cotton, 37% modal, 8% spandex for soft stretch, shape retention and moisture control.
• Contoured waistband: Wider, low-rise band that holds briefs in place without digging in.
• Flatlock seams: Sit flush to the skin, preventing hotspots even during extended wear.
• 4″ inseam: A shorter length reduces bulk under sports shorts or tights, though select styles offer 6″ variants.

Each detail is backed by clinical insight, ensuring the anatomical separation really works—keeping skin surfaces apart and reducing heat build-up during movement.

Testicular Temperature Management

Optimal sperm production occurs at a temperature slightly below core body heat. According to Your Fertility, elevated scrotal temperatures can impair sperm count and motility over time. By creating a dedicated pocket for the testicles, SHEATH’s separative pouch lowers skin-to-skin contact and improves airflow around the scrotum. The result? Cooler, more stable testicular temperature whether you’re on a treadmill, in the saddle or pounding the pavement.

Pros & Cons

Pros

• Urologist-recommended design supports testicular health
• Minimises friction, bounce and overheating
• Soft, breathable fabric blend wicks moisture
• Flat seams and low-rise waistband boost all-day comfort

Cons

• Premium price reflects medical-grade engineering
• Limited inseam options (mostly 4″ briefs, fewer trunks or longer cuts)

Best For Long Workouts & Fertility-Conscious Men

If your routine includes endurance runs, cycling marathons or hour-long gym sessions, SHEATH underwear will keep you cooler and more comfortable from start to finish. It’s equally suited to men planning a family or anyone who values precise anatomical support. For those who prioritise both performance and long-term testicular health, this separative design is a game-changer.

Finding Your Perfect Pair

Selecting the right performance underwear is about more than fabric claims and flashy tech—it’s about identifying the pair that complements your training style and personal priorities. Here are the key factors to weigh:

• Moisture-wicking: Rapid sweat transfer keeps your skin dry and prevents clamminess.
• Breathability: Adequate airflow helps regulate temperature and avoid overheating.
• Support: A well-designed pouch and secure fit eliminate bounce and chafing.
• Temperature regulation: Fabrics that cool when hot and insulate when cool maintain optimal comfort.
• Fit and construction: Seam placement, leg length and waistband design ensure a stable, snug feel without digging in.
• Sustainability: Eco-friendly fibres and ethical production can match your environmental values.

Think about the workouts you tackle most often—HIIT, long-distance running, CrossFit, yoga or daily gym sessions. Match each activity with an underwear style that addresses its unique demands. For example, choose a bamboo pouch brief for anti-chafing and odour resistance on long rides, or a four-way-stretch boxer to flow effortlessly through yoga and martial arts.

Remember, upgrading this foundational layer can pay dividends in comfort and performance. When your underwear works as hard as you do, you’ll spend less time adjusting your kit and more time smashing personal bests.

Ready to make the switch? Visit the SLY Collective homepage to explore our full range and enjoy the Comfort Guarantee on your first pair. Your sessions will never feel the same again.