Simplify, simplify, simplify. This Ultra-Light sock doesn't carry around a lot of baggage. True Seamless construction creates a smooth, streamlined performance fit. You'll forget they're even on. 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.