Create fanciful decorations using our Balloonify Pink Mylar Number 1 Balloon. Fabricated in the shape of "1," this number balloon lets you create different phrases by placing it along with other Balloonify numbers and letters. Made from durable mylar, this happy anniversary balloon can withstand heat and is unaffected by moisture, making it apt for outdoor parties. Equipped with a self-sealing valve, this party balloon closes automatically once inflated, avoiding air or helium leakage. To set up decorations according to your style, this balloon decoration comes with a built-in hanging loops that allows you to place it on walls and ceilings. With a pink aluminum finish, this helium balloon gives a special aura to your parties. Inflate this foil balloon with air or helium based on your need. This mylar balloon measures 40 inches when inflated and is reusable for multiple events. 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.