1000 Mile Ultra Performance Sock White 100% Cotton Durable and functional with superior fit and comfort. Innovative design and material technology Copper enhanced padded zones for added protection. Extra padding for toe, ball and heel zones Braced arch for custom fit and support. High ankle for strong grip. Comfortable temperature for the foot Colour of stitching around the toe seam depends on the size Materials: 35% Cotton, 32% Nylon, 24% Polyester, 8% Cupron, 1% Spandex