The ultimate boot socks! Made with fine Merino Wool for super softness. Wool naturally wicks and evaporates moisture. Great for a wide variety of outdoor activities. Maximum support and comfort, while keeping your feet warm and dry. Medium cushion absorbs shock and friction while preventing blisters and relieves pressure. Terry lining provides great moisture and temperature control. Sewn down top and 3x1 rib keeps socks in place. Machine washable and dryable. Size 10-13.