Underwear

Running boxers with a thermal protective under-layer that allows for maximum performance and comfort. This product has a full-stretch, moisture-wicking mid-weight base layer with a fleeced inside for amazing comfort.

We've updated our Men's Merino 250 Base Layers Bottom to bring you a better fitting, more functional tight. The technical benefits of 100% Merino wool will help you keep your game at a high level for longer. And Smartwool's warmest-weight wool fabric will help keep you warm and comfortable as you ski, run, and hike the day away.

Simple but practical, our Men's Active Ultralite Short Sleeve tee is soft yet functional, for all-day comfort and utility. Its super-light performance fabric—a blend of ZQ-certified Merino wool with TENCEL™ Lyocell fibers—this performance fabric will help keep you cool when your intensity amps up, and its design helps minimize chafing. Plus, it's odor-resistant, breathable, and temperature-regulating, all helpful features when you work up a sweat. With a body-hugging athletic fit, this tee will keep you looking and feeling good, whether you're pumping iron at the gym or hitting the trail for a hike.

Tired of uncomfortable undies? You're in luck, Smartwool has designed the Men's Boxer Brief with feature a double front panel for extra support and special seamed weave that help prevent chafing. Plus the entire brief lets you enjoy the awesome benefits of their ZQ-certified Merino wool fabric with temperature regulated, moisture management and odor control. For a comfortable base layer comfort - no matter the activity whether it be a casual stroll through town or an intense sports session. Put on a pair of these briefs.

Keep your ski boots, hiking boots, and running shoes free of bulk and friction with the Men's Classic Thermal Merino Base Layer 3/4 Bottom. 100% responsibly sourced Merino wool provides ultimate breathability and comfort, while a newly redesigned base layer pants fit helps reduce sag and excess fabric - perfect for your layering needs.

The Men's Intraknit™ Thermal Merino Base Layer 3/4 Bottom are the warm and winter-ready pants you need to perform all season. Smartwool's Merino Sport yarn combines the power of ZQ-certified Merino wool with the strength and fast dry times of polyester . Featuring seamlessly knit mesh ventilation designed to keep you dry and comfortable and a 3D-mapped design for maximum mobility and durability, these are the men's wool bottoms every adventurer needs in their wardrobe.

Warm is an understatement. The Men's Intraknit Thermal Max Merino Base Layer Bottom uses 100% ZQ-certified Merino wool to help keep you comfortable on every cold-weather outing. Insulating terry loops are seamlessly paired with mesh ventilation to balance warmth and breathability, while knit-in reflective elements enhance visibility in low-light conditions. These are the men's base layer pants that every wardobe needs.

The Men's Intraknit™ Thermal Merino Base Layer 3/4 Bottom are the warm and winter-ready pants you need to perform all season. The Merino Sport yarn combines the power of ZQ-certified Merino wool with the strength and fast dry times of polyester . Featuring seamlessly knit mesh ventilation designed to keep you dry and comfortable and a 3D-mapped design for maximum mobility and durability, these are the men's wool bottoms every adventurer needs in their wardrobe.

Smartwool is printing a pattern on their Men's Merino 150 Print Boxer Briefs— bringing you the ultimate in Merino comfort with a fun, mountain-inspired design. The Core Spun technology beefs up garment durability without sacrificing next-to-skin comfort by wrapping high-quality, super-soft Merino around a nylon core for every thread in the150 fabric. The wide, Merino-lined elastic waistband and flatlock seam construction will help make these boxers your new favorite for any activity—from urban exploration to finding adventure on new trails.

SAXX's 22nd Century Silk is made for luxe-ing up your lower half. Made using an uber-soft silk blend, 22nd Century is the crème de la crème of comfort. Jazz up your everyday wardrobe with this classy collection.

DropTemp™ is lab-tested. No one expected Saxx to show up like this. Not even them. But the test results are in, and hot damn, do they look good. Don’t take our word for it. DropTemp™ is lab-tested. Evaporative cooling experts out of Boennigheim, Germany have set the record straight. When it comes to cooling in underwear and performance apparel, DropTemp™ is on top.

Whether it’s strenuous weight room sessions or casual rec league runs, these training boxer briefs will make an impact. Beef up your gym bag with the very best in sport underwear: boxer briefs for training and workouts.

The Quest boxer briefs are perfect for all your travel adventures. Ready for road-trips, red-eye flights, camping, and more, this low-maintenance underwear for men with a little wanderlust has wash-and-go wearability for all your activities. Quest men’s boxer briefs feature a slim fit and are form fitting for easy layering – perfect for changeable climates. The underwear has a 5 inch inseam and fly built in.

Misty mountain hikes, skiing/boarding, days in the snow. This outdoor pair is made with a textured knit for thermal-comfort and first-layer warmth. A level up from the Quest collection, its midweight fabric locks in heat while fighting sweat and odor.

Featuring a Slim Fit - form-fitting through the butt and thighs - treat your package twice as nice with this Sport Mesh 2-Pack. Designed with the male anatomy in mind, each pair comes equipped with the patented BallPark Pouch™ (a 3D hammock that holds everything in place). Great for guys who go between the weight room and boardroom, the BallPark Pouch™ will keep everything in place. Whether you’re running, jumping, or just in the office doing work, you’re going to love what these do for your balls.

Featuring a Slim Fit - form-fitting through the butt and thighs - treat your package twice as nice with this Sport Mesh 2-Pack. Designed with the male anatomy in mind, each pair comes equipped with the patented BallPark Pouch™ (a 3D hammock that holds everything in place). Great for guys who go between the weight room and boardroom, the BallPark Pouch™ will keep everything in place. Whether you’re running, jumping, or just in the office doing work, you’re going to love what these do for your balls.

The Saxx Sport Mesh Boxer Brief features a breathable fine-mesh and lightweight fabric, perfect for a large range of activities from the everyday to the athletic. This fabric gives the right amount of support without feeling too tight. The Sports Mesh is a extra slim boxer brief with a 5-inch inseam, with fly.

Elevating your everyday. Designed with the same moisture-wicking material as the best-selling Vibe, Ultra delivers maximum softness and breathability. Double up with this premium 2-pack.

The Ultra boxer brief is a Saxx favourite for all the right reasons. It’s made from an ultra-soft blend of viscose with a touch of spandex for enhanced stretch. It also features Saxx combination of a thicker, moisture wicking waistband paired with an ergonomic front pouch that provides just the right amount of support, while also having a fly for convenience. This highly breathable boxer has durable 9-panel construction, comfortable flatlock seams, and comes in a long john style fit, making it perfect for everyday wear.

The Ultra boxer brief is a Saxx favourite for all the right reasons. It’s made from an ultra-soft blend of viscose with a touch of spandex for enhanced stretch. It also features Saxx combination of a thicker, moisture wicking waistband paired with an ergonomic front pouch that provides just the right amount of support, while also having a fly for convenience. This highly breathable boxer has durable 9-panel construction, comfortable flatlock seams, and comes in a long john style fit, making it perfect for everyday wear.

Elevating your everyday. Designed with the same moisture-wicking material as the Vibe Super Soft, Ultra delivers maximum comfort and breathability. Double down with this premium 2-Pack.

From the Vibe Super Soft Collection. Fuss-free layering is as easy as Vibe. This best-selling style comes in a slim fit, and is cut from a breathable, moisture-wicking fabric that’s so soft you won’t want to take them off. Vibe is available in SAXX's widest range of prints, and features the patented BallPark Pouch™ technology. You'll find a pair to suit whatever vibe you’re feeling.

From the Vibe Super Soft Collection. Fuss-free layering is as easy as Vibe. This best-selling style comes in a slim fit, and is cut from a breathable, moisture-wicking fabric that’s so soft you won’t want to take them off. Vibe is available in SAXX's widest range of prints, and features the patented BallPark Pouch™ technology. You'll find a pair to suit whatever vibe you’re feeling.

From the Vibe Super Soft Collection. Fuss-free layering is as easy as Vibe. This best-selling style comes in a slim fit, and is cut from a breathable, moisture-wicking fabric that’s so soft you won’t want to take them off. Vibe is available in SAXX's widest range of prints, and features the patented BallPark Pouch™ technology. You'll find a pair to suit whatever vibe you’re feeling.

Personality meets performance in this new pair from SAXX Underwear. Cut from a breathable pin-dot mesh, Volt maximizes air-flow when one is active. Designed to reduce friction, Volt comes equipped with the patented BallPark Pouch™ - a 3D hammock-shaped pouch that keeps your man-parts in place.

A classic, all-around 100% recycled polyester baselayer. The smooth, soft face makes for easy layering. Hollow-core yarns and a diamond-grid back trap warm air, wick moisture and dry fast. HeiQ® Pure odor control keeps things fresh. Fair Trade Certified™ sewn.

A classic, all-around 100% recycled polyester baselayer. The smooth, soft face makes for easy layering. Hollow-core yarns and a diamond-grid back trap warm air, wick moisture and dry fast. HeiQ® Pure odor control keeps things fresh. Fair Trade Certified™ sewn.

A classic, all-around polyester baselayer with 100% recycled content. The smooth, soft face makes for easy layering. Hollow-core yarns and a diamond-grid back trap warm air, wick moisture and dry fast. HeiQ® Fresh durable odor control keeps things fresh. Fair Trade Certified™ sewn.

A classic, all-around 100% recycled polyester baselayer. The smooth, soft face makes for easy layering. Hollow-core yarns and a diamond-grid back trap warm air, wick moisture and dry fast. HeiQ® Pure odor control keeps things fresh. Made in a Fair Trade Certified™ factory.

Versatile year-round base layer bottoms made with 100% merino wool and a slim fit, the 175 Everyday Leggings offer premium breathability, odor-resistance and next-to-skin comfort. Perfect layering for Autumn to Spring, hitting the slopes or just in need of some added warmth from an extra layer during the work week.

A classic, all-purpose base layer T-shirt made with soft and breathable 100% merino wool fabric, the 175 Everyday Short Sleeve Crewe is as versatile as it is comfortable.

Versatile year-round base layer bottoms made with 100% merino wool and a slim fit, the 175 Everyday Leggings With Fly offer premium breathability, odor-resistance and next-to-skin comfort.

The versatile, go-anywhere shirt made from breathable 100% merino wool jersey, the 200 Oasis Long Sleeve Crewe is Icebreaker's best-selling base layer top.

A versatile 100% merino wool base layer top with a classic zip-neck design, the 200 Oasis Long Sleeve Half Zip combines casual comfort with technical performance.

A versatile, go-anywhere shirt made from breathable 100% merino wool jersey, the 200 Oasis Short Sleeve Crewe is Icebreaker's best-selling base layer top. Fibers that regulates the body temperature in all weather conditions, along with resisting odors; gusseted underarms for mobility and comfort

The benchmark against which all others are judged, the 200 Oasis Shorts feature the most versatile merino jersey fabric for year-round layering performance across any activity.

Icebreaker's best-selling active baselayer bottoms made with their ultra-comfortable 100% merino jersey fabric and an updated design for improved comfort, the 200 Oasis Leggings w/ Fly are the perfect foundation for your everyday cold-weather layering system. The Oasis fabric is not only insulating and highly breathable, but it resists odors during extended use. The slim fit and gusseted construction provide unrestricted freedom of movement, while the brushed elastic waistband and flatlock seams throughout eliminate chafing when you’re on the move.

Introducing ZoneKnit Insulated Leggings: the ultimate combination of cozy comfort and versatile style. With advanced technology, these leggings provide targeted warmth to key areas, ensuring you stay snug in colder climates. Made from premium materials, they offer exceptional softness and flexibility for all-day wear. Dress them up or down for any occasion and embrace winter with confidence. Upgrade your wardrobe with ZoneKnit Insulated Leggings for the perfect blend of warmth and fashion.

A midweight merino base layer top designed to help regulate temperature during high-intensity activity, the 200 ZoneKnit™ Long Sleeve Crewe features 100% pure and natural merino wool.

A warmer midweight version of Icebreaker's best-selling Oasis Leggings, perfect for frigid days on the trails or the mountain, the updated 260 Tech Leggings w/ Fly feature a 100% merino wool fabric for premium softness, insulation and breathability. These odor-resistant baselayer bottoms also feature a gusseted construction for ample range of motion, and the brushed elastic waistband and flatlock stitching throughout eliminate chafing when you’re on the move.

A warmer, midweight version of the best-selling Oasis, the 260 Tech Long Sleeve Crewe is a go-to piece for winter layering, made with 100% merino wool.

Heavyweight merino base layer bottoms designed to help regulate temperature during high-intensity activity, the 260 ZoneKnit™ Leggings feature 100% pure and natural merino wool.

Classic boxer briefs made with a stretchy slim fit and their corespun fabric, the Anatomica Boxers are supportive and comfortable for daily life and active pursuits.

Classic boxer briefs made with a stretchy slim fit and Icebreaker's corespun fabric, the Anatomica Boxers with Fly are supportive and comfortable for daily life and active pursuits.

The pro cyclists we work with know the importance of the right base layer for the conditions. The Pro Mesh is made for the widest range of conditions and is designed to keep you dry in cool to mild temperatures. We’ll even put it under a Flanders Warm base layer in the coldest conditions. We’ve given it a graphic print so you can show off that you have something special when you open your jersey zip.

A hyperlight short-sleeve base layer, body-mapped with two types of open mesh for maximum airflow and moisture transfer during indoor training and the hottest racing conditions. The SUPERLÉGER was developed primarily for two specific applications. The first addresses the demands of speed-focused riders who train and race indoors, where the upper body layer needs be as light, breathable, and moisture wicking as possible. The second application is for the hottest outdoor racing conditions, where the same considerations also apply, but where a less revealing front mesh panel adds a touch of welcomed coverage while fully unzipped.

An exceptionally light base layer that manages moisture and controls odor beneath second-skin cold-weather layers or as a standalone top during indoor training. Thermal, weatherproof equipment is no longer the bulky PVC rain capes and adapted ski jackets of decades past, so—at the request of Assos' WorldTour riders—they tailored a long-sleeve base layer to provide summer-worthy wicking and odor control that fits unobtrusively beneath race-tuned equipment like our Spring Fall Jersey or Jacket. In cool or cold weather, transporting internal moisture is as important as keeping the external elements out, especially during intense training or racing, when a series of intervals, hill repeats, or attacks can lead to lingering moisture, a clammy chill, and frigid misery. Alternatively, full-arm wicking is a must for indoor training, when moving through the air isn’t constantly keeping your arms dry.

The Rho Heavyweight – Arcteryx's warmest base layer pants – is made for cold days and mixed output. On the move, the Polartec® Power Stretch® Pro stretches for outstanding freedom of movement. During rest phases – or when it gets really cold – the fleece’s soft brushed interior traps heat to keep you warm. The fleece’s durable nylon outer has a smooth face for comfort under layers, and a zippered thigh pocket secures small essentials. The Rho Heavyweight Bottom was previously the Rho AR Bottom.

The Rho Heavyweights – Arc'Teryx's warmest base layer tops – are made for cold days and mixed output. On the move, the Polartec® Power Stretch® Pro stretches for outstanding freedom of movement. During rest phases – or when it gets really cold – the fleece’s soft brushed interior traps heat to keep you warm. The fleece’s durable nylon outer has a smooth face for comfort under layers, the tall collar extends warmth, and the deep front zipper aids heat dump and makes on-and-off easier. The Rho Heavyweight Zip Neck was previously the Rho AR Zip Neck.

A slim, padded bike boxer brief, designed to cushion under casual clothes or baggies for quick comfort wherever the day takes you. A front cut-away keeps things cool by relieving heat build-up around sensitive areas. This is the new go-to hidden layer suited to getting to work, bikepacking trips, and any ride that ends at a brewery. Stay loose. Stay cool. This is the foundation we build on.