adidas adizero discus/hammer Track Shoe 100% Textile and Synthetic Imported Rubber sole Heel measures approximately 0.75" Weight: 13.2 ounces (men's size 9) Internally reinforced synthetic cage upper for secure hold during rotational movement Soft collar around the ankle to reduce pressure on the ankle and Achilles during throwing events 3-Stripes strap band for midfoot support Designed for maximum support during rotational throwing events; Carbon rubber outsole for durability and maximum rotational potential