#4 Jr. Shape Mylar Balloon
-Do not breathe helium from a balloon. Helium is not toxic nor flammable, but breathing it can result in asphyxiation (loss of consciousness due to insufficient oxygen).
-Do not release mylar (foil) balloons outdoors. Power failures can result if these balloons become entangled in electric lines.
-Mylar balloon are the only ones aloud in Hospitals
FLOAT TIMES FOR MYLAR BALLOONS
In optimum environments, mylar (foil) balloons will remain full and taut for 3-5 days. They will continue to float for two weeks or longer. Air-conditioned air may cause these balloons to shrivel, but they will return to a normal state when exposed to warmer air.
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