Designed to complement the Drytex 4000 baselayers, this like-named sock preserves body heat while providing air circulation. This favors moisture evacuation for maximum comfort. - Sofi-LiteT Fabric: Light, retains warmth efficiently thanks to its permanent temperature insulating performance and quick-drying properties. - Construction: Elastic band at upper and under foot to keep the sock well in place - Extremely stretchable cuff reduces pressure points and increases blood flow - Reinforced heel, underfoot and toes - Terry-knit heavyweight cushion for optimal warmth - Anatomic arch support for optimal fit - Cuff Height: Crew cuff: 8.75-inch / 22cm