Foil balloons are decorative balloons made from a thin layer of metallic film, often coated with colorful designs. Unlike traditional latex balloons, they are more durable and can hold helium for a longer time, making them popular for celebrations like birthdays and weddings. They come in various shapes, including letters, numbers, and characters from cartoons. These balloons are often used for party decorations and can be easily inflated with helium or air. After use, they can be deflated and stored for future events, although they are not biodegradable like latex balloons. Proper disposal is important to minimize environmental impact.