• Navy blue number 8 balloon, 40 inches, made of high-quality aluminum foil • Includes 1 foil balloon and 1 straw for inflation and deflation • Large size, safe, durable, non-toxic, strong, and lightweight • Self-sealing valve for easy inflation and deflation, reusable • Can be inflated with air or helium; floats when filled with helium • Holes at the top and bottom for hanging or attaching to the wall • Suitable for birthday parties, graduations, weddings, engagements, anniversaries, baby showers, New Year's parties, and other events • Do not overinflate, it is recommended to fill to 80%-90% • Keep away from flames, sharp objects, and acidic juices to avoid damage • Color may vary slightly due to lighting and screen • Size and weight may have small variations due to manual measurement • Perfect as a backdrop or photo prop for celebrations