Create an elegant themed party with our Balloonify Black Mylar Number 9 Balloon. Featuring the number 9, this black mylar balloon can be paired up with other Balloonify numbers and letters for your special events. Durable and reusable, this birthday balloon can be used for various catered events. With a moistureproof construction, this number balloon floats for a long time without getting affected by humidity. The self-sealing design of this party balloon prevents air from escaping. To reduce your hand fatigue, this balloon decoration can be inflated with air or helium using an automatic pump too. With an aluminum black finish, this helium balloon gives your decor a stylish touch. Equipped with hanging loops, this custom balloon can be hung on any hard surface. This happy anniversary balloon measures 16 inches in length. 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.