Strong support and secure lockdown through both the spin and glide techniques make the adidas adiZero Discus/Hammer the perfect throwing shoe for serious competitors. Synthetic cage upper construction is internally reinforced with a hook-and-loop strap for additional lockdown during rotation. Soft collar for reduced pressure on the ankle and Achilles. Carbon rubber outsole for durable traction through your throwing motion. Wt. 13.2 oz.