Sealskinz Waterproof Cold Weather Mid Length Sock

From Campmor

SealsSkin is 100 waterproof socks are constructed using premium materials and by bonding three layers together to make one highly waterproof and breathable sock: a Outer Layer - 90 Nylon 10 Elastane a Middle Layer - 100 Hydrophilic Membrane a Inner Layer - 35 Merino Wool 35 Acrylic 23 Polyester 3.5 Nylon 3.5 Elastane Waterproof Sock Care We don&';t like complicated things. And when it comes to the care of your socks we want to make it as simple as possible. This is the type of sock you can throw in the wash along with the rest of your gear. No need to line dry or wash with special detergents. Since the membrane is a solid barrier you&';ll never need to re-waterproof.