Graduated compression, proven circulation improvement. Reduction of calf muscle ascillation. Increased endurance/performance. Improved recovery rate if worn post exercise - increased bloof flow helps to clear lactic acid. Toe seam under toe reduces the risk of blisters. Terry pading throughout heel and foot bottom provides shock absorption. Made with high wicking Coolmax that will help keep you cool and extremely comfortable. 64% Filament coolmax polyester, 22% Nylon, 12% Lycra and 2% Polypropylene.