A 21” diameter crystal clear vinyl ball with four large jingle bells inside, Jinglin’ Ball is latex, BPA, and phthalate-free. The bells moving inside the ball promote visual tracking, auditory discrimination, and experimentation as sounds change with the motion of the ball. Develops spatial orientation, coordination, motor, and social skills. Jinglin’ Ball is a must have for the visually impaired. Strong enough to use for exercise and as a therapy ball, recommended maximum body weight is 270 pounds. Manufacturer cautions against using weights when exercising with Jinglin’ Ball. Ships flat, ready to be inflated with a foot pump, sold separately.