Peerlessly pep up any space and event decor with our Balloonify Black Mylar Letter U Balloon. Designed as the letter 'U,' this custom balloon can be paired with our other Balloonify letter and number balloons to put together creative messages. This party balloon is crafted from premium mylar, making it moistureproof to stay sturdy in humid conditions too. Built to be durable, this metallic balloon can be reused multiple times. The self-sealing valve of this mylar balloon avoids unnecessary air leakage when inflated. Inflate this graduation balloon easily using a hand pump. This letter balloon features a glossy black finish which goes well with all kinds and shades of decor. The hanging loops of this birthday balloon allows you to hang it from surfaces. Measuring 16 inches in length, this foil balloon can be inflated with air or helium. To reuse this balloon, 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.