Thorlo's Ultra high performance Thin Cushion THOR-WICK Ski Socks are designed for the advanced level skier who prefers difficult to challenging runs. Designed to provide a custom fit for skiers on difficult to challenging terrain, wearing technically advanced custom fitted boots and who prefer ultra thin cushioning/protection. Features: Exclusive THOR-WICK(R) is used for maximum WICKING because a dry foot is a warm foot. Reinforced flat knit for WARMTH, PROTECTION and COMFORT. Pique stitching in the calf and arch for STRETCH and FIT. Extra Spandex in the ankle for PRECISE FIT. Proudly made in the USA. Fabric Content: 65% THOR-WICK(R) Polyester 29% Nylon 6% Spandex