The Military Performance Fire Retardant FR MidCalf Sock by Fox River is designed for men in a size M. Made with 82% Modacrylic, 16% nylon, and 2% spandex, these socks offer flame retardant properties for added safety in various settings. The solid GREEN FOLIAGE color and mid-calf length make them suitable for casual occasions and military-themed activities. Easy to care for with machine washable instructions, these performance compression socks are a reliable and stylish choice for those in need of quality and durability.