Easy to use – With just a few simple steps, you can fill up these balloons and start splashing away in no time. Cool off on hot days – There's no better way to beat the heat than by splashing around with water balloons. Eco-friendly – Unlike other plastic toys that end up in landfills, water balloons are biodegradable and won't harm the environment. Improves physical fitness – Running, jumping, and throwing water balloons can be a great workout, improving cardiovascular health and endurance. Great for parties – Whether you're hosting a backyard BBQ or a birthday party, water balloons add an extra element of fun to any celebration.