This is a full over the calf design made from 60% extra heavy Merino Wool yarns, (the best wool in the world), for warmth, 33% nylon, 5% elastic and 2% Lycra Spandex for durability and shape-holding. The Highlands sock can be worn in warm or cool to cold weather. It’s 60% wool makeup wicks moisture away from your foot keeping your feet dry and comfortable, regardless of the temperature. Machine washable and dryable. Made in the USA with Russell Moccasin-branded toe.