Bottoms

Start your layering system with our most innovative foundation to date; our Intraknit™ collection. Smartwool's Men's Intraknit Thermal Merino Base Layer Bottom puts warmth first, while seamlessly knit mesh ventilation helps keep you dry and comfortable. Their revolutionary 3D mapping provides maximum mobility and ribbed elbows provide added durability , so nothing slows you down. Gear up to take on any weather with these men's Merino wool pants.

Smartwool has updated their 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 their warmest-weight wool fabric will help keep you warm and comfortable as you ski, run, and hike the day away.

Guys who want to beat the heat. Hot Shot is equipped with our DropTemp™ technology, boosting your body’s natural cooling capacity. Whether it’s day hikes through Death Valley or sultry summer nights, Hot Shot will keep you cool. Men's Relaxed Fit: form-fitting through the butt and thighs, with extra ease at the leg opening. Features a fly for quick and easy access.

The guy who goes between the weight room and boardroom. This versatile pair is designed for a wide range of sport and everyday activities. Men's Trim Fit 5" inseam

/ MADE FOR Elevating your everyday. Slightly looser than our Slim Fit styles, Ultra combines super-softness with maximum breathability. / BUILT IN TECH BallPark Pouch™, Three-D Fit™, Flat Out Seams™ / HOW IT FITS Relaxed Fit: form-fitting through the butt and thighs, with extra ease at the leg opening. Features a fly for quick and easy access. Men's Trim Fit

The guy who wants to give his balls a boost. This best-selling style is cut from a breathable fabric that’s so soft you won’t want to take it off. Double down with this Vibe 2-Pack. Men's Trim Fit Inseam: 5 in.

The guy who wants to give his balls a boost. This best-selling style is cut from a breathable fabric that’s so soft you won’t want to take it off. Men's Relaxed Fit

The guy who wants to give his balls a boost. This best-selling style is cut from a breathable fabric that’s so soft you won’t want to take it off. Men's Relaxed Fit

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. Weight: 164 g (5.8 oz) Men's Trim Fit

Designed to keep you warm and comfortable in cold conditions. This stretchy, smooth-faced technical layer for everyday activities is made with a soft 94% recycled polyester fabric and feels like traditional fleece next to the skin. Fair Trade Certified™ sewn.

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.

Their best-selling base layer bottoms made from soft and breathable 100% merino wool jersey, the 200 Oasis Leggings With Fly are the perfect foundation for your cold-weather layering.

Their best-selling base layer bottoms made from soft and breathable 100% merino wool jersey, the 200 Oasis Legless feature a short leg for use with boots.

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. Weight: Large = 209 g / 7.37 oz Men's Trim Fit Model measurements: Height: 5'11" / 180cm. Waist: 34.2" / 87cm. He is wearing size M

Featuring their most versatile merino jersey fabric, the 200 Sonebula Leggings provide ample warmth whatever the activity.

Icebreaker's lightest base layer bottoms made with soft, breathable and odor-resistant jersey corespun fabric, the 200 Zone Leggings offer ultralight insulation.

Technical, cold-weather base layer bottoms for highly aerobic days, the 260 Zone Leggings feature zoned ventilation panels for active temperature regulation and ample breathability.

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.

Icebreaker's lightest base layer bottoms made with soft, breathable and odor-resistant jersey corespun fabric, the 150 Zone Leggings offer ultralight insulation. Weight: Large = 234 g / 8.25 oz Men's Fitted Profile Model measurements: Height: 5'11" / 180cm. Waist: 34.2" / 87cm. He is wearing size M

LIFA® Active is the best performance base layer, delivering superior moisture management and lightweight insulation for all your outdoor activities. These LIFA® Active pants have an advanced 2-layer construction with wicking technical fibers to keep you comfortable all day long during any sports activity.

Efficient, ultra-lightweight insulation technology fit for everyday use and high-performance activities. Any season, any activity HH LIFA® keeps you comfortable, warm and dry. Their game-changing, hydrophobic yarn technology delivers light insulation and moisture management through its 100% single layer LIFA® fiber.

These LIFA® Merino Midweight Pants keep you warm and dry during any type of cold weather activity, so you can get outside and stay outside longer. Combined with a 100% merino wool layer with their proven LIFA® fiber technology in a 2-layer construction. Men’s LIFA® Merino Midweight 2-in-1 Base Layer Pants delivers all the breathable warmth of merino fibers, plus the unique moisture management properties of LIFA® fibers. These base layer pants come in cool prints and are fitted for optimal mobility without bulk.

Merino wool & wind blocking materials help to increase insulation where you need it most. For cold and windy days on the mountain, the HH® LIFA® Merino Wind Block Boxers have a wind blocking material in the center of the front to protect you where it counts. With a winning combination of Merino wool and LIFA® stay warm fibers, the HH® LIFA® Merino boxers deliver both warmth and comfort for your toughest adventures.

The Rho Heavyweight – our warmest base layer pant – 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.

Constructed from Torrent™ fleece, the Rho LT is a lightweight thermal base layer bottom for lower output activities in cool to cold temperatures. Torrent™ has a soft, brushed surface that speeds moisture transfer and offers comfort next to the skin. Elastene fibres add stretch and hold the fit, and the articulated patterning and gusseted crotch deliver comfortable performance that moves with the body. Men's Fitted profile. Weight: 180 g / 6.3 oz