Impress your guests with your party decor with our Balloonify Silver Mylar Letter K Balloon. With this single-letter balloon, shaped as the letter "K", you can add other Baloonify numbers and letter balloons to convey messages to your loved one on birthdays, anniversaries, proposals, weddings, and many more. Made with durable mylar material, this foil balloon is moistureproof for long float life. This metallic balloon is not easy to tear or burst and can be reused many times. With a self-sealing valve, inflating this alphabet balloon is a convenient and quick process with no air leaking out. To inflate this silver metallic balloon, simply fill air or helium using a pump to avoid the hassle of doing it manually. This helium balloon has a built-in hanging loop allowing you to simply hang it on the walls and ceilings of the venue. Measuring 16 inches in length when inflated, this silver foil balloon gives your balloon display a sophisticated look. 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) is available and sold separately.