Darn Tough all over the mountain. This Ultra-Light bomber is a simple go-to sock for skiers and riders who know less is more. Over-the-Calf height is ideal for skiing and riding in deep conditions while Ultra-Light Merino Wool provides legendary warmth without the bulk. And since Merino Wool is naturally antimicrobial this sock repels bacteria and odor. If only everything in life was this simple. Still made in Vermont. Guaranteed for life.