The Smartwool PhD Ski Zero Cushion is one of the lightest weight ski socks on the market. As soon as you slide it onto your foot you can tell it's a highly technical ski sock. Using Indestructawool™ technology, Smartwool has created a wool-based yarn that wicks moisture and provides exceptional durability and comfort. The  Zero Cushion is a very thin sock with no shin or foot padding, designed for skiers who have a performance (tight) fitting ski boot. Features: Indestructawool™ technology features a wool-based, patent-pending yarn and construction method for exceptional durability and comfort. 4 Degree® Elite Fit system uses two elastics for greater stretch and recovery to keep the sock in place Mesh ventilation zones designed specifically to provide optimum temperature regulation and moisture management 200 needle construction provides highest knit density while maintaining an ultra lightweight Virtually Seamless™ toe 14” overall height 55% Merino Wool, 41% Nylon, 4% Elastane Height: Over-the-Calf Cushioning: No Smartwool PhD Ski Zero Cushion Ski Socks