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Twin XL Dimensions: Your Ultimate Guide

Twin XL Dimensions: Your Ultimate Guide

If you’ve ever dormed at college or looked for a mattress that offers a little more legroom than a standard Twin, you’ve likely come across the term Twin XL.

Despite its ubiquity in dorm rooms and small apartments, the dimensions of a Twin XL mattress are often misunderstood. In this guide, we will dissect the anatomy of a Twin XL bed, shedding light on its dimensions and how it compares to other bed sizes.

What Is a Twin XL Mattress?

Twin XL stands for Twin Extra Long, which already gives you a hint about its uniqueness. Unlike the standard Twin mattress, a Twin XL offers five additional inches of length, making it a favored choice among taller individuals and those craving more foot space.

Why Choose Twin XL?

For sleepers interested in Twin XL, Puffy Mattresses offer high-quality memory foam options that adapt to your body for a superior night’s sleep.

Twin XL Mattress Size: A Breakdown

The key dimensions of a Twin XL mattress are:

How Long Is a Twin XL Bed?

With a length of 80 inches, the Twin XL provides the extra room you need if you find regular Twin beds too short. This feature makes it a prevalent choice in dorm rooms, where space is often at a premium but tall students still need to catch some Z’s.

How Big Is a Twin XL?

The size dimensions can be summed up as moderately narrow but comfortably long. This creates a unique dynamic:

Size Comparison Table

Mattress Size Width (inches) Length (inches)
Twin 38 75
Twin XL 38 80
Full 54 75
Queen 60 80

How Wide Is a Twin XL Bed?

A Twin XL mattress is 38 inches wide, the same width as a standard Twin bed. The width remains unchanged to provide longer length while maintaining the bed’s suitability for smaller rooms.

How to Keep Two Twin XL Beds Together

If you’re looking to create a more substantial bed space, you can place two Twin XL mattresses side by side. To keep them from drifting apart, you can:

If combining Twin XL beds, consider Puffy’s Twin XL mattresses that are designed for seamless alignment, making the joining process even more effortless.

Check out Puffy mattress reviews from real customers and see how we compare with other brands.

Two Twin XL Beds Together Make What Size Bed?

When placed side by side, two Twin XL beds equate to a King-sized bed. This setup is often referred to as a ‘Split King.’ This modular approach offers flexibility, allowing couples to customize firmness levels on each side.

Key Takeaways

Additional Considerations

What Sheets Fit a Twin XL?

You will need special Twin XL sheets to accommodate the extra length. Standard Twin sheets will be too short.

Twin XL in Different Settings


The Twin XL offers a unique set of dimensions that fill the gap between a Twin and a Full-size bed. Its added length makes it ideal for taller individuals, while its narrow width ensures it fits in most spaces.

Use our store locator to find the closest furniture or mattress store near you and feel the cloudlike comfort of our Puffy Mattress in person.

Whether you’re upgrading your sleep situation or furnishing a new living space, a Twin XL mattress offers a balance of size and comfort.

Choose your Puffy Mattress

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