This reliable outdoor sock keeps your feet cool in the summer and warm in the winter thanks to its advanced merino wool blend fabric. It feels plush but weighs less. It features a terry-lined, reinforced sole that provides cushioning. The 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 linked toe seam ensures a seamless toe area to avoid friction or irritation of the foot. 42% wool (merino), 41% polyamide, 15% polypropylene, 2% elastane (Lycra®).