Duncan Mega Bounce Ball XL $39.99 Default Title - $39.99 Quantity This product is currently sold out. Please fill in the form below if you'd like to be notified when it becomes available! Say hello to the bounciest inflatable ball the world has ever seen! Mega Bounce® is 100 inch circumference of awesomeness that's guaranteed to cause a commotion. Recommended for ages 6 years+. Includes foot pump.