Rubber sole? Sizes per UK Size , USA Size Go One Size Lower? Reduces impact on landing. Heavy duty rubber sole for maximum wear-resistance. Anti-skid, high grip, effectively improving overall speed and control.? Ideal for short-distanced runners. Works on grass, clay, cinder and tarmac, Lightweight & Highly breathable Upper made from mesh, improved durability and superior fit.? Package: Pair of shoes with 7 loosely fitted spikes pre-installed (Requires Tightening). Extra spikes, tools for spike Key? Athletic spiked shoes fit for sprinting, distance running, jumping, hurdling, school training, etc. Professional studs help you run faster, jump higher.