This Hop Ball is the very best quality in hopping balls! Made from super strong, yet soft vinyl and latex-free material for long lasting use and durability. Great exercise product for indoors and smooth safe outdor 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 600 lbs based on the size of the ball. Inflate with a hand or foot pump.