Add a sleek touch to your glamorous gala with our Balloonify Black Mylar Number 9 Balloon. Pairable with other Balloonify numbers and letters, this birthday balloon is shaped like the number 9 and is ideal for making customized banners. Designed from mylar, this number balloon is moistureproof. This durable party balloon is reusable for multiple events. The self-sealing valve of this balloon decoration avoids air from leaking out. Effortlessly expand this graduation balloon using a hand pump. Suitable for air and helium inflation, this custom balloon can be hung or kept afloat. With a glossy aluminum black finish, this helium balloon exudes a classy touch to your special banquets. Comprised with a hanging film, this custom balloon can be easily hung on hinges and hooks. This black 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) sold separately.