Surprise your patrons with fab decor at your anniversary party using our Balloonify Black Mylar Letter J Balloon. Shaped as the letter J, this birthday balloon is ideal for pairing up with other Balloonify numbers and letters to make custom banners. Designed from premium mylar, this letter balloon is moistureproof to endure humidity. The durable construction of this party balloon allows you to reuse it multiple times. With a self-sealing design, this party balloon locks the air in without any leakage, providing a firm, sleek shape. This balloon decoration can be inflated with a hand pump to speed up the process. Easily hang or keep it afloat, as this graduation balloon is suitable for air and helium inflation. Featuring a hanging loop, this helium balloon can be hung on hinges, ceilings, and poles. Adorning a black shade, this custom balloon adds an elegant touch to your party. 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.