Make your event out of this world with our Balloonify Mylar UFO Balloon. This unique UFO balloon is crafted from durable material, ensuring it will last throughout your event and beyond. Perfect for an alien-themed party, this alien party balloon will certainly be the talk of the town. With its self-sealing valve, inflating this flying saucer balloon is a breeze, keeping your event preparation easy. Plus, this moistureproof saucer balloon is suitable for air or helium inflation, providing flexibility in your event decor. Reusable, this mylar balloon is an ideal choice for your party needs. Measuring a large 24.75 inches in length by 20.75 inches in width, it's sure to make a bold statement at any event. To reuse this balloon, gently deflate, properly store, and carefully reinflate without overfilling. Shipped deflated in a 1 count box.