Add a sophisticated touch to your masquerade party with our Balloonify Black Mylar Balloon Letter K Balloon. Combine this birthday balloon designed like the letter K with other Balloonify numbers and letters to create unique messages. The moistureproof construction of this letter balloon ensures it keeps its premium state even in humid conditions. Made from premium mylar, this party balloon is durable to reuse at multiple events. Fashioned with a self-sealing inlet, this balloon decoration seals the air to create a firm shape. By using a hand pump, this graduation balloon can be easily inflated. This custom balloon is suitable for air and helium inflation. The built-in hanging loop of this helium balloon is for easy hanging on ceilings, chandeliers, and poles. Featuring a black shade, this custom balloon adds an exquisite touch to your party decor. This mylar balloon measures 40 inches in length. To reuse these balloons, 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.