The Heart-Shaped Birthday Balloon is a stunning addition to any celebration, especially for birthdays, weddings, and Valentine's Day. Made from high-quality foil, these balloons are available in various shapes and colors. While they are slightly more expensive than traditional latex balloons, their durability and air-tightness make them a worthwhile investment. When inflated with air, they can last for several months without significant changes. If you choose to fill it with helium, you can expect it to float for about 3-7 days, depending on the surrounding temperature and the balloon's size. Featuring a self-sealing valve, the balloon prevents air or helium from escaping immediately after inflation. For best results, inflate using a hand pump or a drinking straw. Get inspired for your decoration by visiting www.party-narozeniny.cz. The balloon measures 42 cm and has a volume of 13 liters. Please note that all our foil balloons come with a self-sealing valve. When inflating with air, use a hand pump, and the balloons will seal themselves after inflation. They can also be topped up through the sealing valve as needed.