Party Balloons 18CI Holographic HIP HIP Hooray Birthday S55

EFFECTS OF ELEVATION, SUNLIGHT, AIR CONDITIONING, AND WIND On hot days, in direct sunlight, balloons may pop within an hour. The same result can occur indoors if balloons are exposed to direct sunlight through windows. Very cool environments may cause helium molecules to shrink, reducing the size and float time of balloons. Indoors or outdoors, the constant flow of air around a balloon will incr