Patented and engineered with heavyweight pads to help prevent blisters and to provide maximum shock absorbancy at the heel and toe. High-density pads in ball and heel protect against shock, impact, and abrasion. Arch Low-density pad provides contour fit and comfort. Instep/Over Toe Flat knit for less bulk and better shoe fit. 85% acrylic, 13% stretch nylon, 2% spandex. Made in USA.