Take your balloon decoration to the next level using our Balloonify Silver Mylar Letter X Balloon. This X-shaped balloon can be paired with other Balloonify letters and numbers. Made from premium mylar, this metallic balloon withstand moisture and heat, making it apt for outdoor use. With a shimmering silver shade, this letter balloon gives a sparkling tone to your party. For reusability, this happy anniversary balloon comes with a self-sealing valve, enabling you to inflate or deflate it multiple times. To make this custom balloon hangable, use the built-in hanging film. Conveniently fill this letter balloon with air or helium using a pump. This birthday balloon measures 40 inches when inflated. 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.