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Twin XL vs King Size Comparison

From the Puffy Editorial Team | 2 min read.
Twin XL vs King Size Comparison

For many, the decision to buy a mattress begins with understanding sizes. While many are familiar with the conventional ‘Twin’ or ‘King’ sizes, the ‘Twin XL’ often presents a curveball. To best inform your purchase, let’s delve deep into the differences and unique advantages of both.

King vs Twin XL

The most direct distinction between the Twin XL and King is the size. A Twin XL, though similar in width to the standard Twin, offers an additional 5 inches in length.

This makes it especially suitable for taller individuals. On the other hand, a King size mattress provides expansive space, ideal for couples or those who value sprawling comfort.


  • Twin XL: 38 inches wide x 80 inches long
  • King: 76 inches wide x 80 inches long

This difference in size brings with it other factors of consideration - room size, budget, and individual needs.

2 Twin XL vs King: A Unique Configuration

A trend that’s been catching on is the use of two Twin XL mattresses to mimic the dimensions of a King.

This configuration, often used in adjustable bed setups, offers the advantage of individual customization for couples. Each partner can adjust their side to their preference without disturbing the other.


  • Individualized comfort settings
  • Easier to move and manage than a single King mattress
  • Flexible for different room layouts

However, there’s a distinct seam in the middle, which might not be ideal for those who wish for a seamless bed surface.

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

The Benefits of Twin XL

  1. Ideal for Taller Individuals: With the added length, the Twin XL is perfect for taller teenagers or adults.
  2. Space-saving: Its narrower width makes it ideal for smaller rooms or multi-use spaces.
  3. Cost-effective: Generally cheaper than its King counterpart.

The Majesty of the King

  1. Luxurious Space: A King mattress offers a palatial amount of space, ideal for couples or families who co-sleep.
  2. Versatility: Ideal for adjustable bed frames and split setups.
  3. Presence: Its size adds a touch of grandeur to any bedroom.

Which is Right for You?

Your choice between a Twin XL and King will largely depend on personal needs, room size, and budget. Consider the following:

  • If you’re single and need extra legroom, the Twin XL is a viable option.
  • Couples or those desiring more space might find the King more suitable.
  • For adjustable settings or if you’re dealing with moving constraints, two Twin XLs might be the practical choice.


The world of mattress sizes can be daunting. However, by understanding the dimensions and unique advantages of each size, you can make an informed decision.

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 choose the expansive luxury of a King or the efficient length of a Twin XL, ensuring a comfortable night’s sleep is paramount.

Choose Your Puffy Mattress

Shop the best-rated Puffy mattress with these extra comfy benefits:

  • Up to $2,000 In Savings
  • Lifetime Warranty
  • 101-Night Sleep Trial
  • Free, Contactless Delivery
  • 100% Made in the USA
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