Includes 4 balls & 1 x pump. Each ball has an 8.5' diameter and 250 grams weight, featuring textured no-slip grip. Ball are inflatable and delivered deflated. Bright and vibrant Colors: 1 each of Red, Blue, Green & Yellow, presented in a color box. Ideal for during recess play and other group activities. The ball is made from heavy composition PVC (EU & USA approved phthalates free PVC). It is NOT a foam ball and comes without foam layer/padding. Conforms to the safety requirements of EU EN71, US CPSIA & ASTM F963. Safe to use. Easy inflation & deflation: Insert the needle into the air hole for inflation; Insert the needle only without the barrel of the pump for deflation. No additional plug needed to close the air hole. Seller Warranty: Should pump or ball faulty, please 'Contact Seller' directly (other than Amazon Customer Service) for a replacement or refund. Seller usually replies most emails in 12 hours.