Provide a space-themed fun party with our Balloonify Silver Mylar Number 7 Balloon. Shaped as number 7, this party balloon can be paired with other Balloonify numbers and letters. Designed from mylar, this number balloon is moistureproof and can be used in humid climates. With its self-sealing design, this balloon decoration keeps the air inside to keep it in shape. This giant number balloon is durable and can be reused multiple times. With a hand pump, you can easily inflate this graduation balloon without hassle. It is convenient to hang this custom balloon because it comes with a built-in hanging loops. Conveniently expand this mylar number balloon with air or helium. For special events, this elegant mylar balloon shines with a silver finish. This silver mylar balloon measures 40 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.