Become a party animal using our Balloonify Silver Mylar Letter U Balloon. Styled as the letter "U," this custom balloon is compatible with our other Balloonify letters and numbers. This foil balloon is made from mylar material, making it moistureproof and reusable. With a self-sealing valve, you can easily inflate or deflate this helium balloon. Designed with a silver shade, this letter balloon exudes a gleaming tone to your party. To deck up your walls, this balloon decoration comes with a hanging film. This happy anniversary balloon can be filled with air or helium according to your needs. Measuring 40 inches when inflated, this graduation balloon can be expanded with an automatic 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.