Notch up your festive celebrations with our Balloonify Black Mylar Letter Y Balloon. This custom balloon, made in the shape of a Y, is pairable with our other Balloonify letter and number balloons. The mylar construction of this party balloon makes it moistureproof. Reuse this metallic balloon by reinflating it when needed. The self-sealing valve of this mylar balloon shuts off automatically to avoid any potential air leaks. This graduation balloon is inflatable using a hand pump, speeding up your assembly process. Featuring a shiny black aluminum finish, this letter balloon accentuates your party setting. The hanging loops of this birthday balloon is in-built, allowing you to hang it anywhere. 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.