Baselayer

Light, comfortable trim-fit base layer for mixed output in cool temperatures. RHO Thermally efficient base layer with excellent moisture management...

Performance base layer for lower output activities in cool to cold temperatures. | LT: Lightweight. RHOThermally efficient base layer with exc...

Start your layering system with our most innovative foundation to date; our Intraknit™ collection. Our Men's Intraknit™ Thermal Merino Base Layer ...

Performance boxer briefs made with moisture-wicking recycled nylon/spandex stretch micromesh fabric for high-output activities and travel. Fair Tra...

A year-round favorite, our Classic All-Season Merino Base Layer Bottoms work hard to keep you comfortable everywhere, from the ski lifts to the cam...

Wear it as an insulating layer under your jacket or as an outer layer on high-output activities—either way the Men’s Winter Warm Essential Crew is ...

Everyday boxer briefs made with moisture-wicking, breathable TENCEL™ lyocell/spandex stretch jersey. Fair Trade Certified™ sewn. Features Moist...

Our Men's Merino Sport 150 Boxer Briefs are designed to perform no matter the trail/road/adventure you're on. They feature a double front panel des...

Every adventure starts with a solid foundation, and so does your outfit. Whether you’re in Tennessee or Timbuktu, the ultra-comfy and durable Merin...

We've updated our Men's Classic Thermal Merino Base Layer Bottom to bring you a better fitting, more functional tight. The technical benefits of 1...

Keep your ski boots, hiking boots, and running shoes free of bulk and friction with our Men's Classic Thermal Merino Base Layer 3/4 Bottom. 100% r...

Description This ultra-lightweight base layer is perfect for year-round layering, whether you're taking on the Nordic trails or heading out for a c...

Comfortable boxer briefs made with TENCEL® lyocell/spandex jersey and breathable recycled nylon/spandex stretch micromesh fabric. Fair Trade Certif...

A classic, all-around 100% recycled polyester baselayer. The smooth, soft face makes for easy layering. Hollow-core yarns and a diamond-grid back ...

Everyday boxers made with moisture-wicking, breathable TENCEL™ lyocell/spandex stretch jersey. Fair Trade Certified™ sewn. Features Moisture-Wi...

A classic, all-around 100% recycled polyester baselayer. The smooth, soft face makes for easy layering. Hollow-core yarns and a diamond-grid back ...