Craft someone a special birthday age greeting with our Balloonify Blue Mylar Number 5 Balloon. Shaped into a number 5, this foil balloon can be paired with other Balloonify number and letter balloons. Made from mylar, this foil number balloon maintains a pristine appearance even in wet weather conditions due to its moistureproof design. Plus, the durable material of this birthday number balloon allows it to be reused again for your convenience. With a self-sealing build, this mylar number balloon is easy to use. You can also inflate this foil number balloon with a hand pump using air or helium. This big number balloon has an aluminum blue foil finish, great for various shark or underwater themed celebrations. To make your display even more extravagant, this number balloon has a hanging loop to hang on walls or ceilings. This party balloon measures 16 inches in length. To reuse these balloons, gently deflate, properly store, and carefully reinflate without overfilling. Shipped deflated in a 1 count box. This party balloon can be easily inflated with the included straw, providing you with full control to help eliminate the risk of over-inflation. Electric air balloon pump (SKU: RWP1061) sold separately.