The EuroSock Board Zone Snowboard Sock is a medium weight, over the calf snowboard sock that has exceptional padding and warmth. Medium density padding on the front shin, heel, and ball of the foot provide extra comfort. Flat seam stitching eliminates bulky pressure points. Elastic support around the ankle and arch keep the sock from moving and bunching, so you're warm and comfortable all day. MicroSupreme is a hollow core micro denier fiber that keeps feet dry and comfortable. Tightly packed fibers trap warm air generated during cold weather activities. Elasticized arch band, ankle brace, and flat knit construction ensure a wrinkle free fit and maximum support. Strategically placed ventilation channels encourage breathability and transport moisture away from the skin. 80% MicroSupreme, 15% nylon, and 5% Spandex.