Velocity Boxing Kid's Children's Pro Freestanding Reflex Punching Bag w/ Hand Pump, Pair of Gloves, Adjustable Height 47 - 57" Velocity Boxing Children's Pro Freestanding Reflex Punching Bag Base can be Filled with 50 Lbs. of Sand or Water for Maximum Stability Approx. Base Diameter: 16.5", Adjustable Height from 47 to 57" Recommended for Ages 5+ and Up Comes with a Pair of 10" Gloves, Also Includes a Hand Pump to Inflate Bag