OgoDisk H2O is the first OgoDisk specifically designed for bouncing water balloons. This lightweight disk flies and floats, and bounces both balls and the included water balloons. Launch balloons at your friends and block their attacks! It's perfect for pool parties, backyard fun, or beach vacations. Each set includes two 13" Disks, 50 Water Balloons and 1 Filling Nozzle.