The Hop! 66 is made from the super strong, yet soft, latex-free vinyl material for long-lasting use and durability. It is a great exercise product for indoors and smooth, safe outdoor surfaces. It promotes children’s body coordination, balance and lymph circulation, and provides a fun workout. It has a special patented handgrip safety handle, and the maximum sustainable weight is up to 600 lbs. based on the size of the ball. The Hop! 66 is available in three sizes and inflates with a hand or foot pump.
— “We’ve had them since we opened, [and they have] great nostalgic value for adults,” Elaine Hackney, owner of Boing! JP’s Toy Shop in Jamaica Plain, Mass., told TDmonthly in summer 2007 about this best seller in her store. “Kids love to exercise on them.”