This reliable outdoor sock keeps your feet cool in summer and warm in winter thanks to the advanced merino wool blend fabric. It feels plush but weighs less. It features a terry-lined, reinforced sole that provides cushioning. This sock extends over the calf to protect you from the elements. Our non-slip shaft technology prevents the socks from slipping or digging in. Perfect for hiking, walking, or physical work. The lightweight terry material in the sole area offers padding, comfort, and outstanding shock-absorbing properties. Merino wool regulates heat and moisture to keep your feet warm in the cold and cool in the heat. The seamless toe closure minimizes friction or irritation on the foot. 42% wool (merino), 41% polyamide, 15% polypropylene, 2% elastane (Lycra®).