All kind of material essential component is the natural rubber, composed by EPDM and so on, increases the slight inorganic pigment causes the product color is brighter, the anti- aged performance greatly strengthens, each kind of performance greatly surpasses PU the target, because the product produces in the factory completes, each kind of target is advantageous for the strict control, In the runway the common pellet question obtains permanently cures. The unique mechanics structure enhances the product flexibility, guaranteed the athlete excellent result creation.