Amaze your guests using our Balloonify Gold Mylar Number 1 Balloon. Meticulously crafted into the shape of the number "1," this birthday balloon can be assembled with other Balloonify numbers and letters to curate messages. This graduation balloon is made from mylar material, making it durable and moistureproof, allowing you to use it for indoor and outdoor events. With an exquisite gold finish, this number balloon makes a perfect backdrop for your pictures. This helium balloon comes with a built-in hanging film that allows it to be hung on walls or ceilings. The self-sealing valve of this happy anniversary balloon lets you inflate and deflate the balloon to reuse it when needed. Fill this foil balloon with air using a hand pump to simplify the process. Measuring 40 inches when inflated, this helium-quality party balloon is a great choice for all your themed parties. To reuse these balloons, gently deflate, properly store, and carefully reinflate without overfilling. Shipped deflated in a 1 count box.