With Ultra HI-FLOAT Balloon Flight Extender, you can increase the float time helium-filled latex balloons by up to 25 times! Requires dispenser (sold separetly. Check: https://tofballoons.ie/shop/balloon-accessories/ultra-hi-float-dispenser ).
Warning: HI-FLOAT is a non-toxic, water washable plastic material. Although non-toxic, keep out of reach of children. For added safety, glasses or safety googles are recommended when inflating treated ballons to avoid eye contact. If splashed in the eye, flush with water for several minutes.