Strategic multi-density cushioning absorbs shock, maximizes cushioning. Dri-FIT fabric wicks moisture to keep you cool with every wear. Reinforced heel and toe maximizes durability. Midfoot Compression Fit keeps socks and cushioning in place. Anatomical left/right ensures a customized fit and cushioning. Fabric: 46% Nylon, 35% Polyester, 13% Cotton, 6% Spandex.