Decorate your backdrops, centerpieces, and a lot more with our Balloonify Silver Mylar Letter D Balloon. Pairable with compatible Balloonify letter and number balloons, this letter balloon in the shape of the letter D is perfect for all kinds of celebrations and occasions. Made from mylar or metalized polyester, this birthday balloon has moistureproof properties to ward off humidity which dramatically reduces the float life of balloons. Reuse this durable party balloon for more than one event by simply deflating it and storing it away. To avoid the air from leaking out fast, this graduation balloon has a self-sealing valve that closes once the balloon is inflated. The silver aluminum foil finish lets you pair this metallic balloon with decorations of all color shades. Hangable on walls and other structures, this mylar balloon comes with a built-in hanging loops. This foil balloon measures 16 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.