Specifications Made with Extremely Durable Latex Holding Pouch constructed of Quality Nylon and Double Stitched Compact and easy to carry Nylon Carrying Case included FREE! How to Use Keep in mind if being used with small children to watch for safety. Also even though the instructions seem easy there is a small learning curve and will take a bit of practice before achieving incredible distances Grab some Family and Friends! You need at least 3 people for ENDLESS FUN! Fill up Water Balloons to about the size of a tennis ball, this will guarantee the balloon will not explode when you let go during launch.