Sparkle your parties easily with our Balloonify Black Mylar Letter N Balloon. Shaped as the letter N, this letter balloon can be combined with other Balloonify numbers and letters to create unique designs. The birthday letter balloon is made of mylar and is moistureproof, making it ideal for using it even in humid conditions. In order to maintain the shape of your balloon, this letter balloon has a self-sealing design that prevents air leakage. The letter balloon can be reused numerous times without deteriorating. Easily expand this party balloon with air or helium. Featuring a minimalistic aluminum black finish, this balloon decoration provides a glossy touch to your wedding decor. With a built-in hanging loop, this black mylar balloon can be easily hung anywhere. This birthday number balloon measures 16 inches in length. 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.