Stop waiting until the last minute to fill up balloons for Prom, Homecoming and other school events. Hi-Float (sold separately) makes your helium balloon decorations float up to 25 times longer so you can fill 'em up well in advance. The convenient Hi-Float Pump makes pumping this amazing liquid a clean and easy process. Simply insert pump into your balloon and press down! Fits 24 oz. and 96 oz. Hi-Float containers.