Thorlos Unisex Everyday Outdoor Mini Crew Sock 100% Cotton 87% Coolmax, 9% Nylon, 3% elastic, 1% polyester Ultra light padding in the heel and ball to protect against shear and impact forces Specifically designed with extra stretch yarn to conform more precisely to a woman's ankle Custom toe area design; smaller heel pocket for added comfort and improved fit for a woman's smaller heel 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