With Bunch O Balloons, get ready for the Tropical Party. Filling these water cans is super fast. In less than 60 seconds, fill the 100 balloons. Simply screw the cluster to a hose or water tap, fill, shake and the balloons come off by themselves. No more tying with patented Bunch O Balloons technology. They are automatically sealed. Even more time to play water battle. Bunch O Balloons rods and caps are made from certified recycled plastic. Balloons are made of natural rubber.