Dri-Lex Moisture Control Technology Dri-Lex helps lift moisture and vapour off the skin, allowing for a drier, more comfortable sock. Lycra®/ Spandex Lycra/ spandex provides excellent fit and superior stretch and recovery. Used in all FootJoy socks. Reinforced Heel 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 Comfort Seam is FootJoys exclusive enclosed toe seam for advanced comfort and fit. Comfort Seam is found in all FootJoy socks.