No more tedious filling, tying, and throwing of individual water balloons. Simply connect it to the water supply or garden hose, turn on the water, and the water fight can begin! This great product design means that the balloons come pre-tied, so you won'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!.