These are some balloons made from aluminum foil material, and safe to use. You can glue them to the door, window or ceiling to add much happier atmosphere. 2023 digital number design, you can also use it as nice photo prop to leave more unforgettable New Year, graduation, birthday, anniversary and more festivals. Features - ColorAssorted Color -Material:Aluminium foil. - Size: 100.00X45.00X0.10cm/39.30X17.68X0.04in - Made from aluminum foil material, these balloons are decorative, safe and for long term to use. - Suitable for family, parties, hotels, restaurants, cafes, kitchens, restaurants and other occasions. - The number balloon has excellent air tightness and self-sealing after inflation, no additional operation needed. - Suitable for New Year, birthday, kid's , also can be used for Children's Day, anniversary and more. - Can be glued on wall, door, window, ceiling, light weight, large size, a nice photo prop. Package list: 1 set x balloons 1 x ribbon(10m) 1 x straw