Product Material: Aluminum Film Ballon+ Latex Balloon Aluminum FilmFeatures: 1, The material is aluminum film, the sphere has metallic luster, uniform color, beautiful spherical shape. 2, Can be used repeatedly, charging and deflation is convenient, do not use it once to throw it away! Special Note: (1) When inflating the aluminum film balloon, it must be slow. It can be filled to 90% with the pump, and then blown with a straw to control the gas volume to avoid breaking. If you blow a two-layer aluminum film that is sticky, be sure to stop the inflating. Gently pull the 2 layers of aluminum film apart and inflate it, otherwise it will be easily damaged. (2) Sharp objects, unclean ground, direct sunlight and excessive extrusion are easy to damage and burst the sphere. (3) Due to the thermal expansion and contraction of the gas, the aluminum film balloon should be properly inflated in winter or when the temperature is lowered; in the summer or when the temperature rises, the aluminum film balloon should be properly deflated to avoid breakage.