This ball is suitable for indoor and outdoor use.Provide endless beach, pool, backyard and indoor entertainment. Made to look and feel like traditional balls. Durable plastic construction and bright colors stand up to tough play, and resists stains or fading. The material of this inflatable ball is rubber,which is strong workmanship and pleasant feel. 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.