61% Coolmax, 19% THOR¿LON Acrylic, 14% stretch nylon, 6% spandex * Lightweight Padding in the heel and ball protects the foot from shear and impact forces * Specifically designed with extra stretch yarn added to conform more precisely to the ankle area. * Custom toe area design, extra stretch nylon in the ankle, and smaller heel pocket - all designed to more precisely conform to a woman"s foot * Wash and dry inside out (to fluff up the pads) using liquid fabric softener after each use (to lubricate the fibers for longer life). Liquid fabric softeners critical to receive full benefit of the product design