Meet Your New Favorite Socks People can’t stop raving about these socks (just check the nearly 800 5-star reviews). The Ultimate Bison Socks are the coziest, warmest, and softest socks we’ve ever made—thanks to our BisonShield™ fiber. This unique fiber is crafted from salvaged bison wool, intercepted from the waste stream, giving you unmatched comfort while being gentle on the planet. It’s the sock that hugs your feet and your eco-consciousness. Why You’ll Love Them * Plush cushioning with reinforced heel and toe for extra durability * Ribbed arch support for a secure, snug fit * Bison wool naturally regulates temperature and wicks moisture, keeping you warm without overheating * Made with a commitment to sustainability right here in the USA Pro Tip: To keep your socks in top shape, use a Guppyfriend Washing Bag to reduce shedding in the wash. Materials: * 62% wool, 22% nylon, 15% bison wool, 1% spandex * Small fits W 6-10, M 5-8 * Large fits W 10-13, M 8-12