EXPERIENCE 16-18 HOURS OF BALLOONS THAT FLOAT IN THE AIR BY USING HIGH QUALITY HELIUM TO FILL YOUR CONFETTI BALLOONS: Even though the balloons are prefilled with a weight of only 5 grams of rose gold foil confetti, cheaper, low grade helium is not effective enough to sustain the weight of the confetti and your confetti balloons will then only float for a couple of hours.