Description of SmartWool PhD Snowboard Light Socks Designed for the boarder that wants performance and comfort, this PhD snowboard light offers lightweight half-cushion sole for a performance feel and a full-cushion shin for all-day comfort. Combined with the new 4-Degree Fit System, this is the best-fitting, most technical snowboard sock on the market. Features: 67% wool, 32% nylon, 1% elastic