The Smartwool Unisex Hike Light Cushion Winding Trail Crew Socks are essential footwear that combines comfort and durability, making them ideal for active feet. Each sock is made from a special blend of merino wool, nylon, recycled nylon, and Elastane that yields a fit that is supremely soft, but also secure. Each sock features mesh ventilation zones that help keep your foot cool as you move around. The 4 Degree Elite system design yields a sock that doesn't slip, bunch up or create pressure points.