ECCO Men's Outdoor Socks 48.6 Acrylic/33% Polyester/13.7% Wool/2.9% Cotton/1% Elastic/0.8% Spandex Machine Wash Provides luxurious itch - free softness for maximum comfort. Natural wicking protection to keep feet dry and moisture free. Shrink - treated to hold its size and shape even after repeated washing. Reinforced heel and toe for added durability, seamless toe construction eliminates irritation and bunching