... wont be destroyed by nail shoes or start running frame even if at thestarting point of 100-meter ... theenvironment. *MaterialWearing surface: Anti-skid EPDM granules, polyurethane (PU) adhesiveBase mat: black rubber granules, one-component polyurethane ... field competition, common sports athletics competition, allkinds of school courts, path for people to take exercises, etc. composite PU running ...