Point6 Hiking Essential Light Crew Socks wool New Zealand merino wool socks: Wool - 62%; Spandex - 7%; Nylon - 13% Durable, long lasting and washable fabric. Breathable - help manage temperature and moisture Comfortable fit - offers extra cushioning on the instep and around the leg to protect against pressure points from heavier footwear These socks will keep your feet nice and warm  they are antimicrobial and resist odor-causing bacteria Merino wool fibers are fine, soft and durable with next to skin comfort