Grasp your guests' attention using Balloonify Black Mylar Number 2 Balloon. Manufactured in the shape of the number "2," this happy anniversary balloon allows you to place them with other Balloonify numbers and letters to customize your messages. With a black finish, this custom balloon complements all your party decor. The self-sealing design of this mylar balloon lets it stay in the same shape and size throughout the event. Conveniently place this number balloon on walls using the built-in hanging loops. Fill this reusable birthday balloon using air or helium based on your needs. This moistureproof foil balloon measures 40 inches when inflated and can be inflated using a hand pump. 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.