Make picture-perfect decors using our Balloonify Rose Gold Mylar Letter U Balloon. This U-shaped birthday balloon is pairable with our other Balloonify letters and numbers. For durability, this reusable helium balloon is made from mylar, which allows it to withstand heat and moisture. The self-sealing valve seizes the air or helium inside this foil balloon, avoiding air leakage. Hang this balloon decoration anywhere on the wall to decorate every space. With a satiny rose gold finish, this happy anniversary balloon is an excellent party addition. Measuring 40 inches when inflated, this custom balloon can be expanded using 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.