The Ski X-Light offers thermoregulation (64% merino wool) and protection for sensitive areas (ankle, shin, heel, and toe). It's an extra-fine model that will provide maximum control.Recommended by the Chamonix Guides Company.An ultra-fine sock, made for those who want optimal feel and control in their ski boots. Having a thin sock does not mean sacrificing comfort:A merino wool reinforcement to protect your shin from the abrasions of the ski bootA reinforcement on the heels, toes, and ankles for a cushioned interfaceLight compression in several areas of the sock: your sock will feel like a second skin. A major asset against blisters and rubbing.A "cushion" of merino wool underfoot, to provide comfort and shock absorption.A sock with 64% merino wool will give you the clear advantages of warmth and odour reduction.