Features: Made of aluminum foil material balloons with a metallic luster, color uniformity Easy to inflate using the a straw or an air handheld pump and the balloons have self sealing valves Materials can be reused, after USE please put the ball to pinch flat Reusable. Self-sealing valve for easy inflation and deflation. Suitable for Birthday,Party,Anniversaries,Weddings,Graduation,All kinds of party etc. Description: Material is aluminum film, color uniform, spherical beautiful When the inflation is completed, please put the ball to pinch flat, the ball comes automatically sealing glue! Can be used repeatedly, inflating and deflating convenience. After completion of the inflatable ball mouth pinch flat,the ball comes viscose mouth automatically. Specifications: Material: Foil Balloon Color:green Size: 32 inch Foil Ballons Numbers: 0-9 Package include: 1 x Number Foil Balloon. To foil balloon must be inflated slowly, can pump to 80 percent , and then use a straw to blow, easy to control volume, in order to avoid bursting. If there is a case of two layers of aluminum foil sticky encounter, be sure to stop inflation, gently pull the hand two layers of aluminum foil and then inflated, or easily damaged -Compare the detail sizes with yours, please allow 2-4cm differs due to manual measurement, thanks (All measurement in cm and please note 1cm=0.39inch)