Merino blend with moisture-wicking and stretch comfort The Burton [ak] Endurance Socks are the pair that stay put and keep your feet warm and dry, all day long. Backcountry or resort, the wool-polyamide blend balances insulation, sweat-wicking, and stretch to keep you riding longer. Features: A merino blend sets you up for dry, comfy, stink-free feet. A wool blend knit built for warmth and comfort. From the extra elastic support to the reinforced heel, they are built to stay put and feel great all day.