Brand new Pack includes (3) Black, (3) White, and (2) Gray socks Non-slip heel grip, Comfort stretch, Mesh ventilation Black & White: 98% Nylon 2% Spandex, Gray: 72% Nylon 25% Polyester 3% Spandex Fits shoe size: 5-9.5 Machine wash warm with like colors, Use only non-chlorine bleach when needed, Tumble dry, normal, low heat