★Do not wrap the balloon string or ribbon around your neck. Choking Hazard. Inflated balloons cannot be carried on a plane or checked as a luggage. Do not use under wires, near railways or near airfields. There is a danger of accidents. Please do not put the balloons near the fire or hit sharp objects. Due to the nature of rubber balloons, oxidation will become tarnished and deteriorated in a few hours to a few days. The air and helium in the inflated balloon will be see-through, so it will deflate over time.