Paper Card Packaging : 1 * 41 inch one balloons , 1 straw.Material: The balloon is made of high-quality aluminum foil, with bright colors, environmentally friendly, non-toxic, safe and reliable. Inflation Tip: Inflate with a straw or a hand pump, which can be filled with air or helium; full of helium can fly into the sky. in order to prevent bursting, please do not inflate the balloon too much, preferably about 90%.