These are the socks that keep feet warm and dry in any weather condition. They have a durable polypropylene exterior that provides 100% waterproof protection from rain puddles or snow and an interior lining that wicks away moisture in warm weather. The mid-length socks also provide superior support and comfort with a built-in four-way stretch fabric, flat toe seams, and additional footbed padding to reduce pressure and absorb shock. Antimicrobial. Machine wash and dry. Outer 62% Polycolon/29% Nylon/9% Elastane, Inner 36% Merino wool/36% Acrylic/18% Polyester/5% Nylon/5% Elastane. Imported. Gray or Black. S, M, L, and XL.