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These crew-length thermal socks are seven times warmer than the average cotton sock. They’re also super soft and comfortable with maximum thickness, ideal for boots and around the home. Crafted from advanced thermal yarns that are long-looped and intensely brushed, these socks have a soft interior that traps warm air close to the skin, keeping feet warm on the coldest days. Non-binding and diabetic-friendly, they can help provide relief for those with circulation problems.