2019 new sneakers equipment temperament focus splendid life fashion dynamic running men's shoes big size 36-39.5, Black

introduction to the classification and properties of sports sole materials: good wear resistance, anti-slip, elasticity, not easy to break, good softness, good elongation, stable shrinkage, good hardness, good bending. high density, hardness, wear resistance, good elasticity, good oxidation resistance, easy corrosion is conducive to environmental protection, not easy to crease. light, elastic, fine appearance, good softness. easy to clean, good hardness, density, tension, tear, elongation .