Whoosh, whoosh, splish, splash: the bear, duck, frog and mouse cheerfully zoom down the waterslide to flop into the bath water. Waterslide fun for the bath (4 different balls). HABA's bathtub ball tracks typically works very well on flat, smooth, clean surfaces like bathtub walls and fiberglass or acrylic shower walls. Suction cups provide easy attachment to a flat clean bathtub or shower surface. Waterslide piece measures about 7" long. Each ball features a different animal: red bear, blue mouse, orange duck and green frog.How fast does each ball go? Do they go faster with added water? Can you catch the frog? How about the duck? Can be used along with other bathtub ball track construction sets from HABA (all sold separately) for even more thrilling ball track fun in the tub!