Poly-PG Grade ball Set is the perfect combination of playability, durability, economy and color. This ball sized 8-1/2 in. comes in 6-colors and is perfect to provide the feel, weight and play of rubber playground balls without any down sides. The six primary/secondary color set in red, yellow, blue, green and violet provides added educational and distribution control benefits. Ball is seamless for durability and has elastic-shape memory for preventing a blow out in case of moderate over-inflation.FeaturesSet Of 6