OUR #1 SKI AND SNOWBOARD SOCK. The Essential Light Cushion OTC features terry loop cushioning in the shin and under the foot to provide premium comfort and warmth. The natural thermoregulating properties of merino wool works with your body temperature to minimize moisture and lock in warmth. This is the most versatile weight of ski sock- not too thick, not too thin. Contents: Wool 68% | Nylon 27% | Elastic 5%