4pairs Navy Mens Merino Wool Socks Below Zero 100% Made in USA 33% polyester 26% nylon 25% acrylic 15% wool 1% spandex . Contains Anti-Microbial properties Fits Mens Shoe size 8-12 Wool/nylon blend is itch-free and maintains durability for the lifetime of the socks Hits above Ankle. Shaped cushioning in the footbed for extra comfort without bulk.