The Amazing Peanut Ball -- Just Inflate for Hours of Fun and Healthy Exercise! This unique design challenges children to balance as they roll and bounce and also provides an ideal medium for balance training, strengthening and proprioceptive activities. Further, it enhances focus by supporting the need for movement and builds core strength. The contoured saddle provides stability and is shaped for forward and back rotation as well as side to side. This provides greater stability than a round ball. Its unique shape allows a therapist to work on activities that might otherwise be somewhat risky on a traditional therapy ball. The ball is recommended for daily exercise and therapy programs, such as occupational therapy. It is easy to inflate (pump sold separately), holds up to 750 pounds and is safety-tested by independent third party laboratories.