Create everlasting memories with our Balloonify Black Mylar Number 3 Balloon. Made into the shape of a 3, this mylar number is compatible with other Balloonify numbers and letters to form unique visual effects. Made with durable mylar, this number balloon withstands moisture. Plus, this foil number balloon is ready to reuse consistently. To easily inflate and deflate, this party balloon has a self-sealing design and can be inflated with a hand pump. For convenience, this party balloon can be filled with either air or helium. This birthday number balloon has an aluminum black finish to seamlessly blend into various decors. With a hanging loop, this giant number balloon can be hung on walls to make eye-catching displays. This mylar number 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.