A wide, merino-lined elastic waistband and flatlock seams help make Smartwool Merino Print boxer briefs your new favorite for any activity—from urban exploration to new trail adventures.

UnderwearUnderwear Bottoms

Built with the outdoor enthusiast in mind, the men's Smartwool Merino Sport long-sleeve quarter-zip top provides thermoregulation, odor resistance and durability for years of adventure.

Underwear TopsBase Layer Tops

An ideal performance layer, the men's REI Co-op Midweight Base Layer Bottoms boast a smooth face and low-bulk seams for easy layering and a brushed back for added warmth and comfort.

Underwear BottomsBase Layer Bottoms

Stay dry, warm and stoked all day with the men's Burton Midweight Base Layer Crew top, which gives you moisture-wicking fabric and comfortable, chafe-free seams.

Underwear TopsBase Layer Tops

Hard-charging winter days start out cold, but you always warm up. The men's REI Co-op Midweight Base Layer half-zip top offers the warmth of long sleeves and the easy venting of a front zipper.

Underwear TopsBase Layer Tops

Stay dry, warm and stoked all day with the men's Burton Midweight Base Layer pants, which give you moisture-wicking fabric with a cottonlike feel and a plush waistband.

Underwear BottomsBase Layer Bottoms

Warm and wicking to keep you comfortable on the slopes, the men's REI Co-op Midweight Long-Sleeve Base Layer has a smooth face to easy layering and a brushed back for warmth against the cold.

Underwear TopsBase Layer Tops

Shred to your heart's content with the comfort of these men's Midweight X base layer bottoms. They're your quiver-of-one, serving up quick-drying, stink-free warmth for long days on the mountain.

Underwear BottomsBase Layer Bottoms

Begin your layering system with a flexible base that moves with you. The men's Burton Midweight X Base Layer Crew top also breathes with your body heat and helps control odors.

Underwear TopsBase Layer Tops

Pull up the hood, deploy the face mask and ride into the weather. The men's Burton Midweight X base layer long-neck hoodie keeps you comfy with a built-in neck warmer and breathable fabric.

Underwear TopsBase Layer Tops

Make layering easy with the chafe-free seams and practical thumbholes of the men's Picture Organic Clothing Nangha base layer top. It's also moisture-wicking and treated to help control odors.

Underwear TopsBase Layer Tops

Conquer your cold-weather workouts in the men's SportHill Northwind Unders underwear. They use strategically placed 3SP® fabric to keep you warm and protected from the wind.

UnderwearUnderwear Bottoms

Beat the heat on summer adventures in the Odlo Performance Light Crew shirt. Organic body mapping and integrated ventilation zones provide ideal breathability when you're working up a sweat.

Underwear TopsBase Layer Tops

Built for travel and epic adventures, the Saxx Quest 2.0 boxer briefs are made from ultralight, quick-drying, pin-dot mesh fabric with an anti-fold waistband, ideal for on-the-go wash and wear.

Underwear BottomsBoxer-Briefs - DEPRECATED