Bring out the ornamentalist in you using our Balloonify Black Mylar Letter Z Balloon. With a Z-shape, this balloon decoration can be combined with other Balloonify letters and numbers. Made from premium mylar, this custom balloon withstands heat and moisture and is reusable. To easily inflate or deflate this happy anniversary balloon with air or helium, use the self-sealing valve. Equipped with a built-in hanging film, this birthday balloon comes with a hanging film. The black finish of this helium balloon makes it a stunning piece for decoration. This party balloon measures 40 inches when inflated and can be filled with a pump. 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.