⢠Featherlite padding for protection during long runs.
⢠Aero-dynamic design for enhanced fit⢠Fiber content: 39% nylon, 33% PTFE treated nylon (NanoGLIDE®), 26% polyester, 2% elastic. Thorlos Unisex Experia PROLITE Ultra-Light Cushion No Show Tab Socks Black/White - XPTU-286 ONE SIZE BLACK/WHITE - BLACK/WHITE, Large Specially designed for long distance and endurance running.