Waterproof 600D nylon, seam sealed waterproof construction, removable 8 millimeter zylex liner (97 percent recycled content), moisture wicking lining, adjustable midfoot strap, adjustable snow collar with kamiks easy grab lace lock, niterays reflective technology, waterproof and lightweight rubber and lt, sup and gt, he and lt, sup and gt, shell, temperature rated -40F/-40C, built in the USA Kamik comes from a place of extremes. Where the harshest conditions intersect with some of the most beautiful sights you'll ever see. At Kamik, we make footwear that brings to life our northern origins. Singular. Strong. Simply dependable. We've been doing it for over 100 years. Day after day. 24/7. The result of all this effort: a complete line of outdoor footwear built to deliver superior comfort and reliable protection in the most extreme conditions. We know you wouldn't have it any other way.