Hello Kitty Hopper Ball Outdoor Toy Set - Bundle Includes Hello Kitty 15" Hopper Ball for Boys and Girls Outdoor Activities, Parties Plus Stickers, More | Hello Kitty Outdoor Toys for Toddlers. This Hello Kitty outdoor toys set includes 1 inflatable Hello Kitty hopper ball that measures 15" when inflated and features cute artwork of Hello Kitty. The Hello Kitty hopper ball is made from durable material that is built to last for hours and hours of hopping and boucing fun. This Hello Kitty hopper ball is a great, fun way to get kids active and exercising and are durable enough to use inside or outside. Kids love the fun, colorful graphics featuring Hello Kitty. Officially licensed Hello Kitty toys and games set for kids also includes Hello Kitty stickers, a create a face sticker book, and a Beach Kids cat door hanger.