WARMKNIT Long Underwear

We reinvented long underwear with insulating Thermolite® technology and a micro-waffle texture for warmth without the weight.

You'll find a form-fitting base layer that sits close to your skin without the stuffed feeling of traditional thermal underwear. Built for winter layering under any outfit, WARMKNIT delivers genuine warmth through advanced insulation rather than excess fabric, keeping you comfortable for months of cold weather.