FootJoy ComfortSof Men's Sport Socks (3 Pair) Black 7-12 Lycra/ spandex provides excellent fit and superior stretch and recovery. Cotton is a natural fiber that is soft, comfortable and breathable FootJoy reinforces the heel of its socks by double-layering the heel area which provides support and cushioning in a known high abrasion area. Comfort Seam is FootJoy's exclusive enclosed toe seam for advanced comfort and fit. Always Buy Authentic!!