No more tedious filling, tying, and throwing individual water balloons. Simply connect it to a water source or garden hose, turn on the water, and the water fight can begin! This fantastic product design means that the balloons come pre-tied, so you don't have to struggle with tying wet balloons. The balloons are also biodegradable, so there's no cleanup afterward. Fill and tie in just one simple step - making water balloons easy!.