Gymnic's Hop Ball is the very best quality in hopping balls! Made from the super strong, yet soft latex-free vinyl material for long lasting use and durability. Great exercise product for indoors and smooth safe outdoor surfaces. Promotes children's body coordination, balance, lymph circulation and provides a fun work out while hopping on the ball. Special patented handgrip safety handle. Maximum sustainable weight up to 200 lbs based on the size of the ball. Available in three sizes. Inflate with a hand or foot pump.