Super Hi-Float is a non-toxic sealant that can be used inside latex balloons to increase the floating time. One gallon fills 240 14" balloons. Not recommended for 5 ½' balloons. Use the dispenser pump (sold separately as 1300215) to inject a small amount of Super Hi-Float into each balloon. The chemical seals the inside wall of the balloon which helps prevent helium from escaping. A great addition to your balloon accessories.