Three red heart-shaped balloons with measurements on a beige wall.

Mylar Balloon Sizes Guide: Mini, Standard, Supershape, Jumbo Balloons

Q: How long do Mylar balloons float?

High-quality helium-filled Mylar balloons can float for 3–7 days indoors, or up to two weeks when stored cool and dry.

Q: Are Mylar balloons reusable?

Yes. Mylar balloons can be deflated and reused by inserting a straw or air pump to refill them. Handle gently to avoid creasing.

Q: Can Mylar balloons be used outdoors?

Yes, but exposure to direct sunlight or strong wind may cause Mylar balloons to deflate or lose their shine faster.

Looking for the perfect Mylar balloon size? From small party accents to giant statement pieces, choosing the right Mylar balloon can transform your celebration. At One Up Balloons, we use high-quality, long-lasting Mylar for birthdays, weddings, and corporate events across Canada. Here’s a quick and easy guide to help you find the right size and shape for your next celebration.

Understanding Mylar Balloon Sizes

Mylar balloons are made from a durable metallic film that holds helium longer than latex. They come in different sizes and shapes, each designed for unique uses—from small table décor to large statement displays.

Mini Mylar Balloons (6–12 inches)

Perfect for balloon arches, centerpieces, or party packages. These mini Mylar balloons are usually air-filled and attached to balloon sticks or used in bunches to add detail and color. They don’t float on helium but make an elegant accent piece.

Mini Mylar balloons on sticks for table centerpieces in metallic pink, blue, and silver — Mini Mylar balloons in metallic pink, blue, and silver — perfect for table centerpieces or balloon sticks.

Standard Mylar Balloons (18 inches)

The most common size you’ll find in stores. 18-inch Mylar balloons come in round, heart, and star shapes. They’re perfect for helium-filled bouquets, gift toppers, or balloon walls. These float beautifully for days with high-quality helium and can be paired with latex helium balloons for depth and contrast.

Mylar balloon size comparison from mini to jumbo on beige background — Side-by-side comparison of mini, standard, supershape, and jumbo Mylar balloons — showing the size difference visually.

Supershape Mylar Balloons (20–30 inches)

Supershape balloons are large themed balloons that make your décor stand out. They come in characters, numbers, letters, or themed shapes. Ideal for birthdays, corporate branding, or photo booths—these balloons float easily with helium and look great in photos.

Supershape rose gold Mylar number and star balloons at luxury party with flowers and LED backdrop — Supershape Mylar balloons — numbers and stars in rose gold, perfect for birthdays, photos, or luxury party décor.

Jumbo Mylar Balloons (36–40 inches)

When you want to make an unforgettable impact, go jumbo. Jumbo Mylar balloons can reach 3 feet wide and are used for weddings, stage events, or grand openings. These large designs often feature reflective chrome or oversized characters for a “wow” effect.

Jumbo gold and black Orbz Mylar balloons for grand opening event — Jumbo Orbz-style Mylar balloons in gold and black — perfect for grand openings, corporate events, or photo walls.

Mylar Balloon Size Chart

Mylar Size	Floats with Helium	Ideal For
Mini (6–12”)	No	Table décor, accents, balloon sticks
Standard (18”)	Yes	Bouquets, gifts, ceiling displays
Supershape (20–30”)	Yes	Themed events, photo ops, branding
Jumbo (36–40”)	Yes	Stage décor, grand openings, weddings

How to Choose the Right Mylar Balloon

🎈 For small events: Use mini and standard sizes for table décor and small bouquets.
🌟 For large displays: Choose supershape or jumbo sizes for maximum visual impact.
💡 Pro Tip: Mix Mylar and latex balloons from our latex helium balloon collection for depth and texture.

Frequently Asked Questions

How long do Mylar balloons float?
High-quality helium-filled Mylar balloons float for 3–7 days indoors, and sometimes up to two weeks when kept cool and dry.

Are Mylar balloons reusable?
Yes! You can deflate and refill most Mylar balloons using a straw or air pump. Avoid creasing or folding them to maintain shape.

Can Mylar balloons be used outdoors?
Yes, but limit direct sunlight and wind exposure to prevent bursting or dulling the shine.