These are some balloons made of aluminum foil material, safe to use. You can glue them to the door, window or ceiling to add more festive and happier atmosphere. Number design, you can also use it as impressive photo prop to leave more unforgettable birthday. Features - ColorAssorted Color - Material: Aluminum foil - Size: 124.00X59.00X10.00cm/48.73X23.19X3.93in - Suitable for indoor and outdoor decoration, aluminum film material, not suitable for bursting. - The balloon has excellent air tightness and sealing after inflation, no additional operation required. - Suitable for party decors, also can be used for birthdays, Anniversary, New Year and more. - Can be glued on wall, door, window, ceiling, light weight, large size, very obvious, a nice photo prop. - Large number shaped design party ornaments add more fun to your theme party, birthday, etc. Package list: 10 x number balloons(number 0-9)