Eurosocks Ski Wool Superlite Sock Merino Wool Nylon 40% Merino Wool, 40% Microsupreme, 15% Nylon, 5% Spandex Perfectly engineered for active ski and snowboard lovers, or any other activitiy that is best suited with an ultra thin and light but warm sock. Flat knit, elastic ankle and arch support, flat seam toe. machine washable/dryable Italy