Featured Twin XL Size Mattresses


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About Twin XL Mattresses

Twin XL mattresses are a great step up from a standard twin mattress. The additional length allows for more sleep space and is great for kids and adults. If you have limited space or sleep alone, a twin XL bed might be the best option for you. Twin XL mattresses are also used to create split king mattress adjustable sets, which can really power up your sleep.

Check out our selection of twin XL mattresses, including twin XL mattress sales. Each of our beds come with a 120-night comfort guarantee and a manufacture warranty. Plus, add on the perfect bedding accessories to make your bed the complete setup.

Get smart prices on twin XL mattresses at BedMart. We carry a large selection of affordable twin XL beds from top mattress brand. Our selection includes twin XL mattresses in every comfort level, from extra firm to plush. We have twin XL bed-in-a box mattresses on sale and available for fast delivery straight to your home. At BedMart, we carry beds in all the common mattress types, including memory foam, traditional innerspring, or hybrid mattresses. You can shop all our twin XL mattresses on sale online or at a BedMart mattress store near you.


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Came in looking for a new bed, and I had no idea what I was looking for. Keith helped us and we were pleasantly surprised with how much knowledge he had in beds! He knew the kind of bed for side/back sleepers, for back pain, and even to help with my husbands acid reflux! We spent some time in there asking questions & he patiently helped us with all our concerns.


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Frequently Asked Questions

Twin XL mattresses are standardly 39 inches wide by 80 inches long. This size is ideal for people who are taller. It is an ideal option for smaller rooms. Twin XL beds are also common in dorm rooms.

The only difference between twin and twin XL is the length of the mattress. Twin XL beds are 5 inches longer than a standard twin. The width of the two is the same at 39 inches.

Due to the extra length added to twin XL mattresses, a twin XL mattress will not fit a twin bed frame. We encourage you to buy a twin XL bed frame if you have that size mattress. There are some companies that have universal sized frames that allow you to adjust to the size that you need but those are hard to come by.

Twin sheets will not fit a twin XL mattress due to it being 5 inches shorter. If you use twin sheets, your sheets will not cover the whole bed. Fitted sheets will also have issues staying in place because you will be overstretching the material. There are some sheets that can be adapted for both twin and twin XL mattresses. You will need to check the packaging to make should it is labeled to fit both. However, we do carry a selection of twin XL sheets that can fit your mattress perfectly.

If you put two twin XL mattresses together, it will equal the sizing of a standard king mattress. You will need to purchase king sheets or two sets of twin XL sheets for your beds. Both are great options depending on your needs.

We carry an assortment of twin XL sheets in a variety of colors. Our sheets can be delivered with your mattress, picked up at a warehouse, or shipped to your home. You can shop our sheet selection here.