Wigwam boot socks combine natural and synthetic fibers to keep feet dry, warm and comfortable. Wigwam provides the precise boot-to-sock fit and quality you demand at work or in the field for all day comfort. Contents: 50% Wool, 48% Nylon, 2% Spandex. Made in Sheboygan, WI USA by Wigwam. Sizes: 9-11-Medium 11.5-13: Large 13.5-15: XLarge 15.5-17: XXLarge