1. Material: elastomer 2. Size: 302*302*13mm 3. Unit Weight:308 ±5g 4. Color:White, gray, red, yellow, light green, dark green, light blue, dark blue 5.Warranty:5Y Surface treatment: The surface is soft frosted with soft touch and good anti-slip performance Chamfer treatment on the hollowed surface to prevent skin scratches The surface layer is divided into 25 squares, which breaks down the surface stress and prevents warping and deformation Double ear buckle connection design, good stability, prevent the floor due to thermal expansion and contraction fracture, drum and deformation Supporting system: 361 support points at the bottom, uniform force, not easy to deformation Ambient temperature range: 70-40 Ball rebound rate 95% Coefficient of sliding friction: 0.6 Shock absorption: 23.4% vertical deformation: 1.2mm Slip resistance value (BPN20): 56 inflaming retarding: I Odor grade: 2