Impress guests with beautiful displays using our Balloonify Gold Mylar Number 1 Balloon. Shaped into a number 1, this big number balloon can create special messages with our other Balloonify number and letter balloons. Constructed from mylar, this birthday number balloon is top quality and moistureproof to avoid being affected by humidity. Great for decorating a number of parties, this air balloon is durable and reusable. Featuring a self-sealing design, this metallic balloon won't allow air to escape and deflate the balloon. To effortlessly fill with air, this foil balloon can be inflated with a hand pump. To make it float or fall on guests, this celebration balloon can be filled with air or helium. With a gold finish, this helium number balloon gives your parties a luxurious appearance. Designed with a hanging loop, this anniversary number balloon decoration can be easily put up on walls or chandeliers. This air-filled 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.