Fascinate your guests with our Balloonify Black Mylar Letter D Balloon. For a unique name tag, combine this birthday balloon shaped like the letter D with other Balloonify letters and numbers. With a moistureproof surface made from premium mylar, this letter balloon stays firm in humid environments. Designed to last, this party balloon can be reused multiple times. With a self-sealing valve, this balloon decoration keeps its shape throughout the event. With the help of a hand pump, this graduation balloon can easily be inflated. The custom balloon can be inflated with either air or helium. Featuring a hanging loops, this happy anniversary balloon can be hung with other balloons to create a beautiful garland. This helium balloon exudes stylish appeal with its polished black shade. This black mylar balloon measures 40 inches in length. 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.