The Wigwam Snow Cube Pro Socks: The Elasticized arch and ankle provided stretch and movement in those critical areas. The Wigwam Ultimax Snow Cube Pro are a great choice because of their versatility, and ability to keep your feet comfortable, warm, and dry. Features: 44% Stretch Nylon 38% Merino Wool 16% Dry-release TENCEL, 2% Spandex