Farm to Feet Men's Kensington Lightweight Crew Socks 59% Merino Wool 36% Nylon 5% Spandex Made in US Merino wool is soft, itch-free, naturally odor and bacteria resistant, cool in the summer and warm in winter Bottom-of-foot cushioning across the entire sole provides shock-absorption that reduces impact from running and hiking and fitted instep reduces bulk Advanced construction of hidden nylon plaiting creates a smooth exterior and a low-profile fit that is ideal for technical and sport socks Half-density cushioning adds softness and wicking performance without dramatically affecting sock thickness - ideal for casual socks Reinforced construction and low-stress seam placement reduce wear and tear, increasing the life of the sock