Long Johns

Our light-as-air AIRKNITˣ performance tight is built to keep you cool, dry, and comfortable to the end of your toughest workouts.

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,...