Brighten your ocean-themed birthday party with our Balloonify Blue Mylar Number 8 Balloon. Shaped as number 8, this birthday balloon perfectly fits other Balloonify numbers and letters to make personalized messages. Designed from premium mylar, this number balloon is moistureproof to endure hot and cold weather conditions. Featuring a self-sealing valve, this party balloon closes well to make the balloon stand in shape. Inflate this balloon decoration using a hand pump to for a faster party set up. Suitable for air and helium inflation, this graduation balloon allows you to float them on the ceiling or hang them on hinges. With a serene blue undertone, this helium balloon emanates tranquil touch to your special events. The hanging loops of this custom balloon lets you easily hang them on hinges. This reusable blue 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.