Upgrade your event decorations with our Balloonify Mylar 3-Piece Space Balloon Sets. These mylar balloons are designed with a unique space theme, featuring UFOs, astronauts, and rocketships, making them an eye-catching addition to your party decor. Crafted from durable mylar foil, these helium balloons maintain their shape and can be filled with either air or helium by use of a pump. With self-sealing valves, these giant mylar balloons ensure easy inflation without the need for heat sealing. Mylar party balloons make an out-of-this-world statement at birthday parties, baby showers, and other special occasions, while their reusable design allows for multiple uses, providing both convenience and value for your business. The rocket ships and UFOs of these sets have hanging loops so you can place them on walls or ceilings. These moistureproof rocket foil balloons create an unforgettable visual impact that your guests will love. To reuse these balloons, gently deflate, properly store, and carefully reinflate without overfilling. Each UFO balloon measures 24.8 inches in length by 20.8 inches in width, the astronaut balloon measures 30.3 inches in length by 23 inches in width, and the rocket ship measures 28.7 inches in length by 23.6 inches in width. Shipped deflated in a 100 count box. These party balloon sets 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.