Anatomical right and left foot design enhances fit, delivering maximum protection by helping to eliminate blisters. * iWick fibers wick moisture to keep feet dry and odor-free. * The PerfectToe (No irritating toe seam.) * High-density cushioning provides extra protection in high impact areas. * 79% iWick Nylon, 13% Polyester, 8% Lycra Spandex