Thorlos Unisex MAF Anti-Fatigue Thick Padded Crew Sock, Coyote Brown, Medium 84% Thor-Lon Acrylic, 10% Nylyon, 6% Elastic Turn Inside Out-Machine Wash-Use Liquid Fabric Softner 82% Acrylic,9% Nylon,5% Spandex Exclusive THOR?LON construction for resilience, durability and better wicking X-Static the silver fiber is knitted into the foot area to provide anti odor benefits Moderate cushioning in ball/heel for reducing shock, impact, shear and blisters Imported