Celebrate your special day with our 36th Birthday Balloon Circle! These foil balloons come in various shapes and colors, offering a touch of elegance and quality that traditional latex balloons can’t match. While they may be a bit pricier, their durability is worth it. Air-filled foil balloons can last for months without significant changes, while helium-filled ones float for about 3-7 days, depending on the surrounding temperature and the balloon's size. Each balloon features a self-sealing valve to prevent air or helium from escaping right after inflation. For best results, use a hand pump or a drinking straw for inflation. Find decoration inspiration at www.party-narozeniny.cz. The balloons measure 42 cm and can be inflated with either helium or air, with a volume of 13 liters. IMPORTANT: All our foil balloons have self-sealing valves. When inflating with air, please use a hand pump. Once inflated, the balloons will seal themselves. You can also top them up through the sealing valve as needed.