Tired of your latex balloons sinking to the floor after 8-10 hours?  Don't be sad, get happy and add Hi-Float to your next balloon order!  This solution of plastic dissolved in water, coats the inside of a latex balloon that reduces helium loss.  Latex balloons have microscopic holes that allow the lighter helium to escape and be replaced with air.   If enough helium escapes, balloons sink.  Hi-Float increase float time by up to 25 times on average (subject to altitude and temperature).