Nothing derails a run, WOD or five-a-side quicker than the wrong undies. Sweat builds, seams rub, legs ride up, support goes missing and suddenly you’re counting hotspots instead of reps. Add an Aussie summer to the mix and the stakes go up: you need underwear that wicks fast, breathes hard, stays put and gives your bits proper support without turning into a swampy, chafe-fest. Not all “sport” boxer briefs are equal, and cotton everyday pairs won’t cut it when the pace picks up.
This guide rounds up 15 of the best sports underwear for men available in Australia for 2025 — from smart bamboo pouch designs and silky performance synthetics to odour-fighting merino options. Each pick explains what makes it different, who it’s best for (running, gym, HIIT, trail, travel or all‑day wear), the fabric, fit and features that matter (pouches, leg length, waistbands, seam placement, fly/no fly), plus sizes, care, sustainability notes, and where to buy locally with indicative pricing. No hype, just clear pointers so you can match your training and climate to the right pair. Ready to bin the chafe and level up your kit? Let’s get you into the right underwear.
1. SLY Collective bamboo boxer briefs with inner pouch
Engineered in Australia and built for chafe-free miles, SLY Collective’s bamboo boxer briefs focus on the two things most men struggle with in sport undies: heat and friction. A structured inner pouch keeps everything separated, the longer leg stays put, and the silky bamboo knit regulates temperature when workouts and weather run hot.
What stands out
SLY’s “life-changing” built‑in pouch is the headline act: it cradles and separates to stop skin‑on‑skin contact, so you finish runs and gym sessions without the familiar burn. The fabric feel is luxe, and the design includes a discreet stash pocket for small essentials.
- Inner pouch support: Separation that prevents chafing and bounce.
- Stay‑put legs: Longer cut resists ride‑up and bunching.
- Nifty pocket: Secure spot for a key, card or pass.
Best for
If your current sport underwear overheats or rubs, this is a strong switch for high‑sweat training, long commutes and travel days where comfort matters all day, not just during the session.
- Running and HIIT: Chafe control plus breathable comfort.
- Strength and all‑day wear: Support without compression squeeze.
- Travel: Pocket practicality and no‑swamp seat on long hauls.
Fabric, fit and features
Bamboo is naturally soft against the skin and helps temper spikes in heat, which is why it shines in Aussie summers. The waistband is supportive without bite, the pouch adds structure without bulk, and flat-feel seams keep hotspots at bay.
- Bamboo blend: Soft handfeel with temperature regulation.
- Structured pouch: Lift and separation for stable support.
- Longer leg: Designed to anchor and minimise ride‑up.
- Low‑profile seams: Built to reduce friction under stride.
Sizes, care and sustainability
SLY offers multiple sizes and free exchanges so you can dial in the fit with zero risk. Care is straightforward—follow the garment label—and the brand’s bamboo choice leans greener.
- Easy fit journey: Comfort Guarantee on your first pair.
- Free exchanges: Hassle‑free size swaps in Australia.
- Smarter fibre: Bamboo needs less water, fewer chemicals, is biodegradable and creates minimal farming waste.
Price and where to buy in Australia
Buy direct from SLY Collective in Australia, with free shipping over $100 and a full refund if your first pair isn’t comfortable. Pricing sits in the mid‑range for performance underwear; check the site for current colours, packs and offers.
2. Under Armour Tech 6" Boxerjock
A staple in a lot of gym bags, the UA Tech 6" Boxerjock earns its spot for being simple, dependable and great value. If you want sport-first underwear that wicks fast, feels soft and stays put through squats, sprints and circuits, this 6-inch cut is a safe bet.
What stands out
The value is hard to beat, especially in the common three‑pack. Testers rate the soft handfeel, secure waistband and all‑round comfort for training, while acknowledging it can feel a touch bulky for all‑out speed work.
- Great value: Often sold in 3‑packs at a sharp price.
- Comfortable feel: Soft fabric with a waistband that doesn’t dig.
- Training ready: Stays in place for strength and mixed sessions.
- Note: Can feel a bit bulky for track efforts.
Best for
Pick the Tech 6" if you’re after a no‑drama workhorse for the gym, classes and everyday runs, and you prefer a classic fit over ultra‑light or compressive options.
- Strength and classes: Secure, fuss‑free fit under shorts.
- Easy to moderate runs: Reliable wicking without ride‑up.
- Daily wear: Comfortable under chinos or work pants.
Fabric, fit and features
Built from a performance polyester‑elastane blend, the Boxerjock balances stretch, support and moisture management. The 6" leg provides thigh coverage that helps cut chafe and stop bunching.
- 90% polyester / 10% elastane: Quick‑dry, breathable knit.
- 6" inseam: Added coverage to reduce ride‑up.
- Supportive waistband: Stays put as you move.
Sizes, care and sustainability
You’ll find a broad size run to fit most bodies, and care is easy: machine wash cold and you’re done. Under Armour Australia also offers free 30‑day returns, which helps with sizing confidence.
- Sizes: XS–3XL.
- Care: Machine wash cold.
- Returns (AU): Free 30‑day returns.
Price and where to buy in Australia
Expect mid‑range pricing with stronger value in 3‑packs. Widely available via Under Armour Australia and major local retailers and sports stores. Watch for frequent promos to stock up for less.
3. Step One UltraGlyde boxer briefs
Built for Aussie heat and bigger miles, Step One’s UltraGlyde boxer briefs zero in on the inner‑thigh rub that ruins workouts. The brief takes a longer‑leg, sport-first cut with a supportive pouch and low‑friction paneling to help you move without hotspots when the sweat rate spikes.
What stands out
The drawcard here is anti‑chafe construction. UltraGlyde uses smooth, glide‑friendly panels where thighs meet, plus a stay‑put leg to tame ride‑up. You also get a supportive, shaped pouch that holds position through squats and sprints.
- Anti‑chafe focus: Low‑friction panels target inner‑thigh rub.
- Stay‑put legs: Longer cut that resists bunching under effort.
- Supportive pouch: Contoured hold without compression squeeze.
- Everyday ready: Comfortable enough to wear beyond training.
Best for
Choose UltraGlyde if you’re fighting thigh rub, rack up humid runs, or lift heavy with thicker quads and want undies that don’t migrate mid‑set.
- Running and HIIT: Reduced friction when pace and heat rise.
- Strength and classes: Secure hold for deep squats and lunges.
- All‑day wear: Soft feel that still wicks on commute and travel.
Fabric, fit and features
The knit is soft against skin with fast‑dry behaviour and enough stretch to track your stride. Flat or low‑profile seams keep pressure points off high‑movement zones, and the waistband locks on without digging.
- Soft, quick‑dry knit: Breathable comfort for Aussie summers.
- Contoured fit: Pouch structure adds stability and airflow.
- Low‑profile seams: Designed to minimise rubbing under load.
- Athletic 6–7" style leg: Coverage where chafe starts.
Sizes, care and sustainability
Step One offers an inclusive size run and straightforward care—follow the garment label and wash cold to preserve stretch and handfeel. The brand prioritises durable construction to extend wear and reduce replacement frequency.
- Inclusive sizing: Built to fit a broad range of body types.
- Easy care: Machine wash cold; line dry recommended.
- Longevity first: Robust stitching and panels for repeat sessions.
Price and where to buy in Australia
Expect mid‑range pricing with regular multi‑buy offers. Widely available direct to consumer in Australia, with fast local shipping and simple returns to help you lock in the right size. Keep an eye out for bundle deals to refresh your drawer for less.
4. SAXX Kinetic HD boxer brief
If you want locked‑in support without feeling restricted, the SAXX Kinetic HD is a premium pick that keeps pace on faster days. It won a major Gear of the Year nod in 2024 for its blend of breathable fabric, light compression and a refined pouch that holds everything securely when you’re moving hard.
What stands out
SAXX’s upgraded, movement‑ready design focuses on security and comfort under load. The Pro version of the brand’s BallPark Pouch increases snugness and stability, while the fabric’s four‑way stretch never feels stiff.
- Award‑winning performance: Recognised as a 2024 Gear of the Year winner.
- Pro BallPark Pouch: Increased snugness and security where it counts.
- Light compression feel: Supportive without going full compression short.
- Breathable and quick‑dry: Moisture‑wicking with anti‑odour properties.
- Four‑way stretch: Moves cleanly through stride, squats and lunges.
Best for
Choose the Kinetic HD if you’re chasing a best sports underwear men option for tempo runs, HIIT or gym days where support and stability matter.
- Speedwork and HIIT: Extra hold for fast changes of direction.
- Longer runs: Breathability and wicking for steady comfort.
- Mixed training: Stays put through lifts and circuits.
Fabric, fit and features
The knit is engineered for movement and heat management. It delivers a subtle compressive hug, a smooth next‑to‑skin feel and a waistband that anchors without digging.
- 88% nylon / 12% spandex: Durable, quick‑dry and breathable.
- Four‑way stretch: Freedom to move without bagging or bunching.
- Refined pouch structure: Support with reduced friction points.
Sizes, care and sustainability
You’ll find a straightforward size run and easy care. Stick to the label to preserve stretch and handfeel over repeated washes.
- Sizes: S–XL (standard men’s sizing).
- Care: Machine wash as per garment label; avoid high heat.
- Materials note: Performance synthetic blend built for longevity.
Price and where to buy in Australia
Typically sold as single units at a premium training price point. Availability in Australia varies; look for stock at specialist running and sports retailers or reputable online marketplaces that service AU, and monitor for restocks on popular colours and sizes.
5. Runderwear men’s running boxer shorts
If you’re after sheer comfort and zero faff on the run, Runderwear’s running boxer shorts are a bullseye. Praised for their “best fit” by independent testers, they combine bounce‑reducing support with seamless construction and excellent moisture management—exactly what you want from the best sports underwear men can wear when the pace picks up.
What stands out
Runderwear prioritises friction‑free running with a smooth, seamless build and a gusseted crotch for natural movement. Testers also highlight superior support that prevents bouncing and outstanding wicking that helps keep you comfortable from warm‑up to cooldown.
- Seamless, anti‑chafe: Minimal irritation even on longer efforts.
- Secure support: Holds everything in place without feeling restrictive.
- Excellent wicking: Moves sweat fast to reduce sogginess and rub.
- Heads‑up: Availability can be inconsistent—grab a spare pair when you can.
Best for
Ideal if you run regularly, sweat heavily, or have had issues with seams and ride‑up in standard undies. Also a strong pick for long walks and travel days where all‑day comfort matters.
- Road and trail running: Stable fit with low friction.
- HIIT and classes: Support that won’t distract mid‑set.
- Hiking and travel: Breathable comfort that lasts all day.
Fabric, fit and features
A soft, recycled performance knit delivers stretch, breathability and dependable shape retention. The cut is close without bagginess, with a seamless body and gusseted crotch to keep movement smooth and hotspots at bay.
- 92% recycled polyamide / 8% recycled elastane: Lightweight, quick‑dry.
- Gusseted crotch: Extra mobility and reliable support.
- Seamless construction: Designed to minimise rubbing and pressure points.
- Stay‑put fit: Boxer short style without the loose, bunchy feel.
Sizes, care and sustainability
The range covers most runners, and care is as simple as tossing them in with your kit. Recycled yarns add a welcome sustainability angle without compromising performance.
- Sizes: S–XXL.
- Care: Machine wash; machine dry as needed (follow garment label).
- Recycled materials: Polyamide/elastane blend made from recycled content.
Price and where to buy in Australia
Expect performance‑tier pricing aligned with premium running underwear. Availability can ebb and flow, so check reputable Aussie running retailers and the brand’s direct store, and consider buying two if your size is in stock.
6. Lululemon Built to Move Boxer 5"
When sweat and stink are your kryptonite, this is the boxer that punches above its weight. The Built to Move 5" is praised for outstanding sweat management and odour control, backed by a smooth, supportive feel and four‑way stretch that moves cleanly through squats, strides and burpees.
What stands out
This pair is singled out for best‑in‑class odour control thanks to excellent moisture wicking and rapid drying. It’s supportive without feeling restrictive, breathes well even when sessions stack up, and the stretch never fights your movement. The only trade‑off is a premium single‑pair price.
- Odour control focus: Excellent wicking/drying to help prevent build‑up.
- Four‑way stretch: Unrestricted motion for any session.
- Breathable comfort: Better‑than‑average airflow under heat.
- Supportive feel: Holds position without compression squeeze.
- Premium price: You’re paying for performance and durability.
Best for
Reach for these when you’re training in the heat, doubling up workouts, or need dependable all‑day freshness. They’re a strong “best sports underwear men” pick if you value sweat control over maximal compression.
- Hot, humid runs and HIIT
- Strength days and classes
- Travel and long wear windows where freshness matters
Fabric, fit and features
The knit blends hard‑wearing nylon with Lycra elastane for a slick, quick‑dry feel and resilient stretch. The 5" inseam hits a sweet spot—enough coverage to tame ride‑up without feeling long under split shorts.
- 76% nylon / 24% Lycra elastane: Fast‑dry, durable stretch.
- 5" leg length: Coverage without bulk.
- Next‑to‑skin smoothness: Minimises friction under load.
Sizes, care and sustainability
Sizing is inclusive and the care routine is simple. Stick to cold washes to protect stretch and keep performance high across repeated sessions.
- Sizes: XS–XXL.
- Care: Machine wash cold; avoid high heat when drying.
- Longevity mindset: Durable synthetics reduce frequent replacement.
Price and where to buy in Australia
Expect a premium, single‑pair price point. Widely available from Lululemon Australia online and in stores nationwide, with regular colour drops—check local stock for your size before busy seasons.
7. Nike Dri-FIT Essential Micro boxer briefs
If you want a lightweight, no‑fuss pair from a global sport giant, Nike’s Dri‑FIT Essential Micro boxer briefs are the set‑and‑forget option for most sessions. They’re built for training comfort with a smooth micro feel, clean lines under shorts and reliable moisture management when the tempo rises.
What stands out
Nike leans on its Dri‑FIT know‑how to prioritise sweat control and a featherweight handfeel. The result is a simple, gym‑ready brief that stays comfortable across different movements without bunching or distraction.
- Moisture management: Dri‑FIT performance fabric helps move sweat off skin.
- Light, microfibre feel: Smooth next‑to‑skin finish for low friction.
- Everyday versatility: Equally at home in the gym or on easy runs.
- Stay‑put comfort: Supportive waistband designed to remain in place.
Best for
Pick this if you want a dependable “grab‑and‑go” training brief that balances comfort and breathability without heavy compression.
- Gym sessions and classes
- Short to mid‑distance runs
- Team sports and cross‑training
- Daily wear under work or travel kit
Fabric, fit and features
A stretchy, fast‑dry performance knit keeps things cool and comfortable, while the streamlined cut sits flat under split shorts and tights. Low‑profile finishing helps reduce rubbing when you’re moving in multiple planes.
- Performance micro knit: Lightweight, quick‑dry comfort.
- Stretch fit: Moves with you through squats, strides and lunges.
- Low‑profile seams: Built to minimise hotspots under load.
- Supportive waistband: Secure without digging.
Sizes, care and sustainability
Standard men’s sizing makes it easy to lock in your fit. Care is straightforward—wash cold, avoid high heat—to preserve stretch and handfeel over time.
- Sizes: Typical men’s range.
- Care: Machine wash cold; line dry or low heat.
Price and where to buy in Australia
Expect a mid‑range single‑pair price, with multi‑buy savings during sales. Widely available from major Australian sports retailers and brand stores nationwide, with frequent colour refreshes to match your kit.
8. Adidas Aeroready sport performance boxer briefs
Adidas leans on its AEROREADY sweat‑management to deliver a light, training‑first boxer brief that feels cool when the tempo rises. If you want a mainstream, no‑drama option that stays put and dries fast, this ticks the brief for gym work, runs and team sport.
What stands out
The big win is the airy, form‑fitting feel that doesn’t ride up when you’re moving in multiple planes. Community feedback often calls out how light they feel and how reliably they stay in place without compression squeeze.
- Airy comfort: Lightweight, breathable micro feel against the skin.
- Stays put: Cut and grip that resist ride‑up under effort.
- No‑fuss performance: Training comfort without overbuilt bulk.
Best for
A strong “best sports underwear men” pick if you rotate between classes, runs and rec sport, and want dependable moisture control with a familiar fit.
- Gym sessions and classes
- Short to mid‑distance runs
- Five‑a‑side and court work
- Daily wear between workouts
Fabric, fit and features
AEROREADY fabric helps wick sweat off the skin to keep you drier, while the smooth, stretchy knit tracks your stride and squats without bunching. The finish is streamlined to minimise rub under shorts or tights.
- AEROREADY knit: Designed to manage moisture and dry quickly.
- Stretch fit: Moves cleanly through lunges, sprints and changes of direction.
- Low‑profile seams/waistband: Built for comfort without digging.
Sizes, care and sustainability
Sizing follows standard men’s ranges and is easy to dial in. Care is simple—stick to the label, with cold washes helping preserve stretch and handfeel. Some colourways may include recycled content; check the garment tag for specifics.
- Sizes: Standard men’s sizing.
- Care: Machine wash cold; avoid high heat when drying.
- Materials note: Check label for any recycled‑content variants.
Price and where to buy in Australia
Expect mid‑range single‑pair pricing with frequent multi‑buy deals. Widely available through adidas Australia and major local sports retailers, with consistent stock and seasonal colour updates.
9. BN3TH Pro boxer brief
For blokes who like a firmer, more “locked‑in” feel than everyday trunks, the BN3TH Pro boxer brief sits in that premium, performance lane: supportive through changes of pace, smooth against skin, and built to keep you cool when the work rate spikes. It’s the kind of sport brief you reach for on days where you don’t want to think about your undies once the clock starts.
What stands out
The Pro brief aims for a secure, bounce‑reducing hold with a fast‑dry, training‑ready knit and a stay‑put leg length that helps curb ride‑up. The overall package is about clean movement and minimal distraction during high‑output sessions.
- Locked‑in support: Secure feel for sharper efforts and multi‑direction moves.
- Quick‑dry comfort: Performance knit designed to move moisture fast.
- Stay‑put legs: Athletic cut that resists bunching and creeping.
- Low‑friction finish: Smooth next‑to‑skin feel to help reduce hotspots.
Best for
Choose this if your week mixes gym work, intervals and court/field sessions and you prefer a supportive sport brief over a loose, everyday cut.
- HIIT, circuits and strength
- Tempo/interval runs
- Court and field drills
- All‑day active wear between sessions
Fabric, fit and features
A stretchy performance knit tracks your stride and squats without bagging, with a structured front for stability and airflow. The waistband holds position without digging, and low‑profile seams keep high‑movement zones calm.
- Performance stretch knit: Breathable, fast‑dry feel.
- Structured front: Support and separation for consistent hold.
- Athletic leg length: Coverage that helps prevent thigh rub.
- Low‑profile seams/waist: Built for comfort under load.
Sizes, care and sustainability
Standard men’s sizing makes it simple to dial in your fit. Care is straightforward: cold wash to protect stretch and handfeel, avoid high heat when drying to extend garment life.
- Sizes: Typical S–XL range (check retailer chart).
- Care: Machine wash cold; line dry/low heat.
Price and where to buy in Australia
Expect a premium, single‑pair price in line with high‑performance training underwear. Availability in Australia is solid via specialist running/sports retailers and reputable online marketplaces; watch for periodic bundle promos to kit out the drawer for less.
10. Icebreaker Anatomica merino boxer brief
When you’re training through four seasons (sometimes in one Melbourne morning), a merino option earns its place. The Icebreaker Anatomica brings merino’s natural temperature control and odour resistance to a sport cut that feels soft next to skin and stays comfortable as your effort—and the weather—shifts. Merino wool helps keep you cool when it’s hot and warm when it’s chilly, and it’s renowned for staying fresher for longer between washes.
What stands out
Merino’s big advantage is comfort over time: it manages heat swings, handles sweat well, and resists odour build‑up, so you can run to work, lift at lunch or travel without changing. Testers of comparable merino boxers also note how surprisingly dry they feel post‑session and how itch‑free modern knits are.
- Thermo‑regulating: Comfortable in heat and cool conditions.
- Odour resistant: Stays fresher on back‑to‑back days and travel.
- Soft, itch‑free feel: Fine merino against skin, not scratchy.
- All‑day comfort: Moves from training to commute with ease.
Best for
Pick the Anatomica if you train in variable weather, need one pair to cover run‑commute to desk, or want the best sports underwear men can wear for multi‑day trips without smelling like last night’s intervals.
- Run‑commute and everyday training
- Hiking, travel and long wear windows
- Cool mornings/warm afternoons where conditions swing
Fabric, fit and features
A lightweight performance merino knit delivers breathability and moisture management with a smooth, next‑to‑skin finish. The cut is supportive rather than compressive, designed to sit cleanly under split shorts or tights with seams kept low‑profile to reduce rub.
- Light merino performance knit: Breathable, quick‑dry comfort.
- Supportive sport cut: Holds position without squeeze.
- Low‑profile seams/waistband: Built to minimise hotspots.
Sizes, care and sustainability
You get a broad size run and simple care: wash on a gentle, cold cycle and avoid high heat to protect stretch and handfeel. Merino is a natural, renewable fibre, and modern blends are built for repeat wear.
- Sizes: Broad men’s range (check retailer chart).
- Care: Gentle machine wash cold; line dry/low heat.
- Sustainability note: Merino is renewable and long‑wearing.
Price and where to buy in Australia
Expect a premium single‑pair price in line with technical merino. Widely available via Icebreaker Australia and specialist outdoor/running retailers nationwide; stock can fluctuate around peak seasons, so grab a spare when your size is in.
11. Smartwool Merino Sport 150 boxer brief
Smartwool’s merino boxer briefs are a go‑to when you want natural temperature control and low‑odour comfort across changeable Aussie conditions. Independent testers have praised Smartwool’s merino boxers for being extremely comfortable, sweat‑wicking and chafe‑free, with standout temperature regulation. The trade‑off is a slightly roomier, less compressive fit that’s better for easy to moderate efforts than all‑out track sessions.
What stands out
Merino shines when your day runs from cool starts to hot finishes. These feel soft against skin, handle sweat well and stay fresher for longer. Feedback on Smartwool’s merino boxers notes no chafing and excellent comfort, while flagging a baggier fit than purely synthetic, compression‑leaning briefs.
- Temperature control: Merino helps keep you cool in heat and warm when it’s chilly.
- Odour resistance: Wears fresher on back‑to‑back days and travel.
- Chafe‑free comfort: Testers report no rubbing with a smooth next‑to‑skin feel.
- Roomier cut: Not as tight as performance synthetics; better for low‑ to medium‑impact work.
Best for
Choose this as a best sports underwear men option when comfort across hours matters more than maximal compression.
- Recovery runs, easy mileage and gym strength
- Hiking, travel and commute‑to‑desk days
- Variable weather where temps swing through the session
Fabric, fit and features
A fine‑gauge merino performance knit delivers breathable, quick‑dry comfort with a naturally soft, itch‑free feel. The fit is supportive rather than tight, designed to sit cleanly under split shorts or tights and move without grabbing.
- Fine merino performance knit: Breathable, sweat‑friendly, soft on skin.
- Supportive, non‑compressive cut: Holds position without squeeze.
- Low‑profile seams/waistband: Built to minimise hotspots over distance.
Sizes, care and sustainability
Standard men’s sizing makes it easy to dial in your fit. Care is simple: machine wash on a gentle, cold cycle and avoid high heat. Merino is a natural, renewable fibre, and quality knits are built to last.
- Sizes: Typical men’s range (check retailer chart).
- Care: Gentle machine wash cold; line dry/low heat.
- Sustainability: Merino wool is renewable and long‑wearing.
Price and where to buy in Australia
Expect a premium single‑pair price consistent with technical merino. Availability is strong through specialist outdoor and running retailers across Australia and reputable online stores; stock can fluctuate around peak seasons, so buy a spare when your size is in.
12. Stance Staple Boxer Brief Wholester
If comfort is your non‑negotiable, the Stance Staple Wholester is a crowd‑pleaser. Independent testers have called out its glove‑like fit, zero bunching and no‑chafe performance, even with a longer leg. It’s premium by price, but the quality and all‑day wearability justify a place in your best sports underwear men rotation.
What stands out
The Wholester pouch gives supportive structure without squeeze, while the longer leg stays planted—no creeping, no folding. Testers praise the fit, finish and overall comfort; the only knock is cost.
- Glove‑like fit: Hugs without compressing; moves cleanly with you.
- No ride‑up: Longer legs that don’t bunch during squats or strides.
- Chafe resistant: Smooth next‑to‑skin feel for high‑movement sessions.
- Premium build: Great quality; pricier as a single pair.
Best for
Pick these when you want one pair that’s as comfy in the weight room as it is on an easy run or a long travel day.
- Strength and classes: Stays put through deep ranges.
- Easy to moderate runs: Friction‑free miles and cooldowns.
- All‑day wear and travel: Soft, supportive comfort for hours.
Fabric, fit and features
A silky, breathable knit blends modal and lyocell for next‑level softness, backed by elastane for stretch. The Wholester pouch adds stable support, and the cut is long enough to curb thigh rub without feeling bulky.
- 65% modal / 26% lyocell / 9% elastane: Soft, breathable stretch.
- Wholester pouch: Structured support with reduced friction.
- Longer inseam: Helps prevent ride‑up and inner‑thigh rub.
- Low‑profile finishing: Smooth seams and a secure waistband.
Sizes, care and sustainability
Sizing is straightforward and covers most bodies. Care details aren’t specified by the brand’s listing—stick to the garment label to preserve stretch and handfeel.
- Sizes: S–XL.
- Care: Follow garment label; avoid high heat to extend life.
Price and where to buy in Australia
Expect a premium single‑pair price. Readily available through Stance in Australia and select specialist sports and lifestyle retailers nationwide; watch for seasonal promos to stock up for less.
13. Uniqlo AIRism ultra seamless boxer brief
When the mercury rises, Uniqlo’s AIRism Ultra Seamless boxer brief is a lightweight, wallet‑friendly way to stay cool. Testers rate it for warm weather thanks to excellent moisture management, a barely‑there feel and a cut‑off, seamless waistband that lies flat under gym shorts or work pants. It’s a strong everyday-training pick in any “best sports underwear men” shortlist if you value breathability over compression.
What stands out
AIRism’s calling card is comfort in the heat. The seamless waistband sits invisibly with no digging, the fabric wicks and dries quickly, and the overall fit feels custom without squeeze. The trade‑off: the waistband isn’t the absolute strongest, and popular sizes can sell out fast.
- Heat‑ready comfort: Super breathable, great sweat support in warm weather.
- Seamless waistband: Cut‑off top edge that feels invisible against skin.
- Featherweight feel: Close‑hugging without compression bulk.
- Heads‑up: Waistband strength is moderate; stock moves quickly.
Best for
If you want undies you can forget about during hot classes, easy runs or long commutes, this is the simple, breathable option that just works.
- Gym and studio sessions
- Short to mid‑distance runs
- All‑day wear, commuting and travel
- Layering under slim pants or tights
Fabric, fit and features
The AIRism Ultra Seamless blends fast‑dry nylon with plenty of stretch for smooth, restriction‑free movement. The 5" inseam hits the sweet spot for coverage without bulk, and the seamless top keeps profiles clean under kit.
- 71% nylon / 29% spandex: Lightweight, quick‑dry, high stretch.
- 5" inseam: Enough coverage to resist ride‑up.
- Ultra seamless waist: Flat, no‑dig comfort under layers.
- High breathability: Fabric engineered for moisture control.
Sizes, care and sustainability
Sizing is inclusive and easy to dial in, and the pair holds up well to regular washing. Preserve stretch and handfeel with gentle care.
- Sizes: S–3XL.
- Care: Follow garment label; machine wash cold recommended and avoid high heat.
Price and where to buy in Australia
Value is a big part of the appeal—these are budget‑friendly for performance underwear. Typically available from Uniqlo stores and online; because they sell out quickly, consider grabbing a backup when your size is in.
14. Bonds Active trunks
A go-to from an Aussie staple, Bonds Active trunks are built for everyday training with simple, sport-first comfort. The Active line focuses on breathability and freshness, pairing a supportive trunk cut with mesh elements and an antibacterial finish so you can move, sweat and recover without fuss.
What stands out
Bonds keeps it practical: a breathable feel from mesh construction, an antibacterial finish to help with odour, and broad, easy availability across Australia. If you want straightforward sport undies that don’t cost the earth or require a special wash routine, these fit the brief.
- Breathable mesh: Airflow where you heat up most.
- Antibacterial finish: Helps keep post‑session funk down.
- Easy to find: Widely available nationally, often at sharp prices.
Best for
Ideal for guys who rotate between the gym, five‑a‑side and quick runs, and prefer the freedom of a shorter trunk over a longer boxer brief. A solid everyday pick in any best sports underwear men shortlist.
- Gym classes and circuits
- Team sports and cross‑training
- Short to mid‑distance runs
- Daily wear between sessions
Fabric, fit and features
The Active trunks use a performance knit with strategic breathability for a light, quick‑dry feel. The trunk cut gives you range of motion without excess fabric, a supportive waistband keeps things planted, and smooth finishes help reduce rubbing under load.
- Performance knit + mesh: Designed for airflow and moisture control.
- Athletic trunk cut: Mobility with minimal bulk.
- Supportive waistband: Secure without digging.
- Low‑profile finishing: Smooth against skin to limit hotspots.
Sizes, care and sustainability
Standard men’s sizing makes fit straightforward. Care is simple—machine wash per the garment label; avoiding high heat helps preserve stretch and handfeel. Check the product tag for any fabric content notes on specific colourways.
- Sizes: Standard men’s range.
- Care: Machine wash; avoid high heat for longevity.
- Materials note: Refer to garment tag for exact fibre blend.
Price and where to buy in Australia
Expect accessible, mid‑range pricing with frequent promos and multipack value. You’ll find Bonds Active trunks at Bonds stores, online, and across major Australian retailers and department stores, making it easy to stock up in your size and preferred colours.
15. UFM adjustable support boxer brief
Some days you want more lift and lockdown, other days you want a looser, freer feel. UFM’s adjustable support boxer brief is built around that idea: customise the support to your session so you can move harder without the bounce, rub and mid‑run readjustments that ruin a workout. If a fixed pouch has never quite nailed it for you, this is a clever alternative for the best sports underwear men can wear when impact ramps up.
What stands out
The headline is the custom support concept. Instead of a one‑position pouch, you can dial in how snug things sit to cut movement and friction, then back it off for recovery or travel. The result is stable, confidence‑building support with less fiddling between sets or strides.
- Adjustable support: Tune lift and separation to your activity.
- Stability under impact: Helps reduce bounce and hotspots.
- Versatile comfort: Tighten for speedwork, relax for all‑day wear.
- Heads‑up: A brief learning curve to find your sweet spot.
Best for
Go UFM if you’ve struggled with chafing, testy support or constant adjustments in standard trunks, and want control you can tailor to the day.
- Running, HIIT and team sport: Extra hold when pace changes fast.
- Strength sessions: Secure through deep ranges and heavy sets.
- Travel and long days: Loosen off for breathable, low‑pressure comfort.
Fabric, fit and features
The boxer brief cut gives coverage to help curb inner‑thigh rub, while a smooth performance knit manages sweat and dries quickly. A supportive waistband anchors everything, and low‑profile seams keep high‑movement zones calm.
- Performance knit: Breathable, quick‑dry comfort for Aussie heat.
- Adjustable pouch concept: Personalised support and separation.
- Stay‑put cut: Boxer‑brief length to resist ride‑up.
- Low‑profile finishing: Smooth feel to minimise friction.
Sizes, care and sustainability
Standard men’s sizing makes it easy to lock in your fit. Care is simple—wash cold and avoid high heat to preserve stretch, shape and the adjustable system for longer wear.
- Sizes: Typical men’s range (check retailer chart).
- Care: Machine wash cold; line dry/low heat for longevity.
- Built to last: Durable construction to handle repeat sessions.
Price and where to buy in Australia
Expect a mid‑to‑premium single‑pair price given the adjustable design. Availability is solid through specialist sports/running retailers and reputable online marketplaces that service Australia; multi‑buy offers pop up regularly, so it’s worth grabbing a spare when your size is in.
Before you go
Comfort that lasts through heat, tempo and time under tension comes down to three things: fabric, fit and support. Skip cotton for workouts. For speed and sweaty sessions, pick breathable synthetics with stay‑put 5–7" legs; for odour control and temperature swings, go merino; for plush handfeel and heat control, bamboo shines. Look for pouches or seamless builds, flat seams and waistbands that don’t dig. Then match the cut to your sport—running and HIIT want stable support; strength wants legs that don’t creep. Start with two pairs you trust, rotate, and retire anything that rides up or rubs.
Ready to bin the chafe for good? Try an Aussie‑designed, bamboo upgrade with a built‑in pouch and longer legs from SLY Collective. You get a Comfort Guarantee on your first pair, free size exchanges, and free AU shipping over $100. One pair on your next sweaty session will tell you more than any review ever could.