With the Pool Sub Jumper you can bounce off the pool wall and floor. Practice and perform stunning underwater stunts. The big 9″ diameter ball fills with water and features a platform and a ball on top to stand and hold with your feet. Grab the handle and bounce around the pool. Measures 36″ tall. Show off for your friends with the many amazing tricks you can do with Sub Jumpa! Tricks include: – Barrel Roll – two different 360 Underwater Spin – Kickflip Crossup – Off the Wall and many many more! See how many you can come up with!!!!