Amaze your guests at your disco-themed party with our Balloonify Silver Mylar Letter J Balloon. Shaped like the letter J, this birthday balloon pairs well with other Balloonify numbers and letters. Made from premium mylar, this letter balloon is moistureproof and can be used conveniently in humid conditions. With a durable mylar construction, this party balloon can be reused for multiple events. To avoid air leakage, this party balloon features a self-sealing valve. Easily expand this balloon decoration with a hand pump. For hanging or keeping the balloon afloat, this graduation balloon is suitable for both air and helium. The built-in hanging loop of this custom balloon aids in hanging the balloon wherever you desire. With a stunning silver foil finish, this helium balloon adds a shiny touch to your event 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.