What Is a Mylar Balloon?
Mylar balloons are shiny foil balloons made of a special type of polyester film (BoPET) and a thin aluminum coating. They can hold helium gas for a long time and are more durable and attractive than regular latex balloons.
Many people want to know what is a mylar balloon and why it is different, simply put, it is made of a stronger material, leaks less gas, and is available in custom shapes.

What Is a Mylar Balloon Made Of?
If you wonder what is inside a mylar balloon, then the matter is very simple—
- BoPET (polyester film)
- Aluminum metallic coating on top
- Self-sealing valve
- Excellent helium retention ability
That is why the answer to the question of what are balloons made out of is called—polyester film and metallic coating.
Mylar vs Latex Balloons
If you are still wondering what is a mylar balloon and how is it different from latex, the main differences are—
- Mylar balloons are made of polyester and foil, while latex is made of natural rubber
- Mylar can float for 2–5 days or more, while latex usually lasts for 8–12 hours
- Numbers, letters, cartoons, and custom designs are easily available on mylar
- Mylar is more durable and gives a premium look
Many people search for what are mylar balloons — these are basically long-lasting decorative foil balloons.

Why Are Mylar Balloons So Popular?
In my experience as an event decorator, I have seen that mylar balloons are used more at large events because—
- Floats for 2–5 days
- More shiny and attractive for taking pictures
- Provides a premium look with a professional look
- Can be easily customized
This is why many people look for different types of mylar balloons, such as mini mylar balloons, mylar chrome balloons, funny mylar balloons, valentine’s day mylar balloons, christmas mylar balloons, custom mylar balloons or custom printed mylar balloons.
How Long Do Mylar Balloons Float?
Again, if you want to know what a mylar balloon is and how long it lasts, then time is its big advantage.
- Helium filled usually lasts 2–5 days or more
- Air filled can last up to a few weeks
- Lasts longer in cold environments
- May shrink slightly in hot weather

Can Mylar Balloons Be Reused?
- Yes, in most cases.
- Self-sealing valve allows easy gas release
- Reusable if folded carefully
- Keep away from sharp objects
That’s why many people ask what mylar balloons are and can they be reused—the answer is yes.
Where to Get Them?
Many people search for where to buy mylar balloons; they are available at party shops, online stores, and professional decor services.
Turquoise Sky Events – Premium Mylar Balloon Setup
If you don’t want to just buy balloons, but want a complete luxury décor, Turquoise Sky Events offers custom Mylar balloon installation and premium balloon art designs.
Birthdays, weddings, engagements or corporate events—DIY may be fine for small decorations, but for larger events, a professional setup changes the whole atmosphere. Ensuring the right size, the right gas, and the perfect finish is their specialty.

FAQ
What Is the Typical Lifespan of a Helium-Filled Mylar Balloon?
They can often last 2 to 5 days or up to several weeks.
Can Mylar Balloons Be Reused?
Yes, mylar balloons can be reused if you deflate and properly store them.
Why Do Mylar Balloons Appear Shinier Than Latex Balloons?
Mylar blankets have an aluminum layer that reflects from them.
Can I Fill a Mylar Balloon with Air Instead of Helium?
Yes, but will not float — used for decor only.