1. Material: 100% natural PP, Food Grade 2. Size: 302*302*16mm 3. Unit Weight:305�±5g 4. Color:White, gray, red, yellow, light green, dark green, light blue, dark blue 5.Warranty:5Y Theme design:The sun, earth and stars that children like very much were selected as design elements, and named "Happy Planet", which is in line with the theme of the kindergarten Surface treatment:Medium frosted surface layer has the advantages of good anti-slip performance, easy cleaning and good safety. Supporting system:the number of Happy Planet's spring pads is 64, the support pads are evenly distributed, and there are no dead ends in elasticity, thus ensuring the safety of children's sports. Eight elastic support points are designed at the edge of the floor to ensure the uniformity of elasticity Stable system:The floor link adopts a snap design to ensure that the floor is not covered,not broken and not deformed when the heat expands and the cold contracts.Normal splicing state:2mm,thermal expansion:0mm;cold shortening:4mm 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