4 pair pack Mens 10-13 Quarter Lightweight Merino Wool Socks wool 4 Pair pack. Made in USA 71% Merino wool ,21% Nylon, 7% Poly,1% Spandex Fits Mens Shoe size 10-13 Merino Wool/nylon blend is itch-free and maintains durability for the lifetime of the socks Quarter cut (hits at or above ankle) . Lightweight cushioning for extra comfort without bulk.