Create personalized messages that will leave guests in awe, using our Balloonify Rose Gold Mylar Number 4 Balloon. Shaped into a number 4, this birthday number balloon can be paired with other Balloonify numbers and letters. Made from durable mylar, this foil balloon is moistureproof and top quality. Plus, this mylar number balloon can be reused and lasts for a long time. For an uncomplicated inflating process, this big number balloon is self-sealing. With a versatile build, this party balloon can be inflated with a hand pump using air or helium. The aluminum rose gold foil finish of this helium number balloon adds a touch of pizazz to any room. To easily hang on walls or ceilings, this foil number balloon has a hanging loop. This number balloon measures 16 inches in length and is great for all kinds of special occasions. 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.