Rubber sole? Lightweight TPU upper prevent the shoes from smelling and sweaty after a long duration of walk or exercise, ensure you to enjoy the unparalleled pleasure of free running.? 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.? Package: Pair of shoes with 6 loosely fitted spikes pre-installed (Requires Tightening). Extra spikes, tools for spike replacement. Drawstring bag.? Guarantee: Do not worry, if they still don??t fit properly, just contact us to arrange an exchange or return.