Base Layer - Tops

Capilene Air is the most advanced baselayer we've ever made. It has the greatest range of warmth and comfort of any of our baselayers, insulates ev...

Our most versatile baselayer: warm, breathable, quick-drying and with HeiQ Fresh durable odor control for daily use. The Capilene Midweight Zip-Nec...

With its innovative, seamless, 3-D knit structure, our Capilene Air Crew offers amazing warmth and comfort range. An airy blend of 51% responsibly ...

A lightweight, fast-drying, long-sleeved tee with a relaxed fit, built for fast paced ascents.

Over forty years ago Terramar was the first company to introduce pure silk performance base layer products. Today, Thermasilk is still the standard...

Over forty years ago Terramar was the first company to introduce pure silk performance base layer products. Today, Thermasilk is still the standard...

Buy the Wool Thermo T-Shirt w/Inlay locally.

Buy the Wool Thermo LS w/Inlay locally.

Buy the Super Thermo C-Shirt locally.

With a form-flattering plus-size fit, our Women's Classic All-Season Merino Base Layer Long Sleeve Plus will hug your body like a second skin. It's...

Our All-Season-weight Merino meets your favorite 1/4 zip style with our Women's Classic All-Season Merino Base Layer 1/4 Zip. With 100% Merino wool...

Spring skiing or summer camping? The year-round Men's Classic All-Season Merino Base Layer Long Sleeve is game for either. With our Core Spun techn...

An all-season favorite, the Women's Classic All-Season Merino Base Layer Long Sleeve can be sported as a base layer in the fall or summer when it's...

New to our innovative Intraknit line is the Men's Intraknit Merino 200 1/4 Zip. This Smartwool base layer is 3D-mapped for a near-custom fit and fr...

Meet the new and improved Women's Merino 250 Base Layer Crew. We've updated this 100% Merino wool fan-favorite with new color options and an enhanc...

We've updated the fit of our Women's Merino 250 Base Layer 1/4 Zip to improve functionality while also enhancing aesthetics. As one of our heaviest...

Made with our innovative Intraknit technology, this men's baselayer crew is designed with colorblock patterning for a distinctive look. It's 3D-kni...

Our most versatile baselayer: warm, breathable, quick-drying and with HeiQ Fresh durable odor control for daily use. The Capilene Midweight Zip-Nec...

Lightweight, fast-drying, active hoody, ideal for covering up in sunny weather.

Soft, stretchy, breathable and compressible, Capilene Thermal Weight is made of Polartec Power Grid fabric with a smooth face that glides beneath l...

Combining the naturally anti-odor properties of merino wool, and the added durability of recycled polyester, the lightweight Alpine Onset Merino 15...

Combining the naturally anti-odor properties of merino wool, and the added durability of recycled polyester, Alpine Onset Merino wool base layers a...

Our most versatile baselayer: warm, breathable, quick-drying and with HeiQ Fresh durable odor control for daily use. The Capilene Midweight Crew hi...

Quick-wicking, high stretch, and body contouring, this tank top offers soft-feel support, perfect for climbing and active summer days.