The Smartwool Classic Hike Light Cushion Crew Sock is a traditional merino wool sock with a modern upgrade for hiking comfort. Whatever footwear you prefer, the merino wool blend now features ZQ-certified wool and a bit of recycled nylon, giving a big high five to the mother earth you love to explore. Soft against the foot, a light layer of cushion underfoot and temperature regulation that can take on all four seasons. Sustainable while still focusing on contentment from toe to heel.