LARGE AND MEDIUM: Size Large fits Mens shoe size 9-12; Size Medium fits Mens/Boys shoe size 4-8, Womens 6-10; These thermal socks are 93% acrylic, 6% polyester, 1% spandex
DESIGNED FOR EXTREME TEMPERATURES: Warm kids socks; Insulating thermal yarn traps heat and keeps feet warm even in the coldest environments and is 7X warmer than cotton. Perfect Cold weather boot and ski socks for men and women. These are great winter socks and ski thermals
SOFTER THAN WOOL: Does not irritate skin. Itch free! These adult and teen warm fuzzy socks have heavily brushed fleece lining for superior softness and comfort. Nothing better than cozy heated thermals to cradle your feet, when on the go, or relaxing at home. Ideal trail hiking thermal socks, outdoor weather gear, camping gear accessory.