Welcome a new bundle of joy in a glamorous manner by using our Balloonify Black Mylar Letter D Balloon. Manufactured using mylar, this letter balloon is durable and moistureproof to ensure maximum float life. Pair this mylar balloon shaped like the letter D with other Balloonify numbers and letter balloons to create customized congratulatory messages. This metallic balloon can be deflated after every use and reused for later events. To make this custom balloon easy to use, it features a self-sealing valve to keep the air inside for a longer duration without oozing out. This graduation balloon is inflatable with air or helium, according to your purpose. Adorned with a black aluminum foil finish, this party balloon complements all kinds of celebratory decor. Provided with hanging loops to hang this birthday balloon onto the wall, it can be comfortably installed. 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.