The bouncing ball is made of durable plastic material, extremely resilient, and can withstand all movements during use by your children. Jumping with the bouncing ball promotes balance, muscle development, and coordination in children. The ball can be quickly and easily inflated with a standard air pump. The included plug seals the valve after inflation. Small grooves on the handles provide optimal grip while jumping, preventing children from slipping off with their hands. Guaranteed fun for indoor and outdoor play. The bouncing ball can be deflated if needed and conveniently stored in its attractive packaging. Since the bouncing ball may lose air over time, it can be refilled with air at any time.