If over inflated and put in extreme heat the balloon might burst. Think of the money and hassles you will save by eliminating the use of helium and replacing popped or deflated latex balloons. The Balloon Holder attaches to a vehicle's window via a window clip. Slight deflation does not mean the Balloon is defective.
Please note that while this product can be used anytime of the year it is still sensitive to air density.This reuseable, unique plastic & flexible fiberglass invention allows Reusable Balloons filled with only air to fly at the same height of 30". Keeping the Reusable Balloon inflated in a controlled climate (such as an office) is a good way to test the Balloon. This kit includes a reuseable inflatible balloon (20 inches in diameter) made out of PVC vinyl and a unique plastic & flexible fiberglass window clip stick 30 inches tall plus an Adapter Clip that firmly holders the Reusable Balloon.