The Expand a Bed Promise:
With Every Expand a Bed Sold, We Donate a Blanket to Someone in Need
Expand a Bed Cooling Gel Memory Foam Proprietary Twin XL Mattress Topper
save: $70.00
The Best Twin XL Mattress Topper for a Cozy College Dorm
Cool, Comfortable, and Made for Dorm Life
Looking for a better night’s sleep in your dorm? The Expand A Bed Cooling Gel Memory Foam Topper is designed to fit any Twin XL bed perfectly. Its cooling gel keeps you comfortable through the night, while the memory foam supports your body where it matters. Ideal for college students who want comfort without a bulky mattress. Easy to set up, lightweight, and ships fast. A must-have for any dorm room upgrade.
Why Students Love It
- Increases the width of any twin xl mattress by 8 inches!
- Cooling gel memory foam for temperature control
- Fits standard twin xl dorm beds
- Soft, supportive memory foam
💬 Hear what other students are saying. Read our customer reviews before you buy.
Get the Details
Designed for College Dorms
The Expand a Bed mattress topper is designed to make any dorm room feel like home. Our mattress expander is built to fit Twin XL mattresses, which are commonly found in dorm rooms across the U.S. Expand a Bed increases the width of any Twin XL bed from 38" to 46"—the perfect size to improve your comfort without taking up too much space in cramped dorm rooms!
Easy to Install
So how does it work? Our proprietary combination of straps and high-density foam side supports squeezes the existing mattress and locks onto the Twin XL bed frame to create an ultra-comfortable sleeping surface. To install, simply thread the straps around the existing Twin XL bed frame, back through the buckles, and tighten.
Composition
The sleeping surface is constructed from two layers of industry-leading, sustainable foam. The base layer provides support, while an ultra-comfortable layer of gel memory foam conforms to your body. Our removable waterproof cover allows for easy cleaning and worry-free spill protection.
Reusable Vacuum Bag
Expand a Bed comes in a reusable vacuum bag, allowing the product to be vacuum-sealed and stored in a compact 16" x 16" x 24" bundle. Simply place Expand a Bed back in the bag when summer comes and use a standard vacuum to seal it (handheld vacuum pump also included).
Note: This product works best with Full XL bed sheets.
Your Purchase Tells Someone They Matter
Expand a Bed Cooling Gel Memory Foam Proprietary Twin XL Mattress Topper
save: $70.00
Real Reviews From Real Customers
View All-
University of New Hampshire Student
"I honestly wasn't sure at first given how much less expensive the product is than other options, but Expand a Bed exceeded my expectations. It was easy to set up, and the increase in width is noticeable and appreciated. The combination of support and comfort from the foam layers is fantastic. I also appreciate how compact it is for storage when the semester ends. It easily fits in my car for the trip home at the end of the year!"
James Thompson
-
Bentley University Student
"Expand a Bed has been a game-changer for my dorm room! Although I was skeptical at first, the installation was super easy and the straps held the mattress topper on my bed with ease! The added width makes my Twin XL bed feel so much more like my bed at home, and the gel memory foam layer is perfect for a good night's sleep. Plus, the removable waterproof cover is super convenient for cleaning (lol). Highly recommend this to any college student living in a dorm!"
Emily Miller
-
Virginia Commonwealth University Student
"The Expand a Bed mattress expander has been a lifesaver in my tiny dorm room. It's incredibly comfortable and the perfect size to fit my space without making it feel cramped. I rolled off my bed in the middle of the night last school year and that is no longer a concern! The foam is supportive yet soft, and the gel memory foam layer feels amazing. I also love the cover material! It’s nice to not be sleeping directly on a dirty university mattress!”
Sarah Mitchell
-
University of Rhode Island Student
"The Expand a Bed mattress expander has been a lifesaver in my tiny dorm room. It's incredibly comfortable and the perfect size to fit my space without making it feel cramped. I rolled off my bed in the middle of the night last school year and that is no longer a concern! The foam is supportive yet soft, and the gel memory foam layer feels amazing. I also love the cover material! It’s nice to not be sleeping directly on a dirty university mattress!”
Michael Rivera
-
University of Richmond Student
"Absolutely no question Expand a Bed is the best purchase I've made for my dorm room. The increase in bed width is just right – not too much to take up space but enough to improve comfort. The two-layer sleeping surface foam construction is super comfortable, and the side support foam and straps make the design super stable. The waterproof cover is a great feature too. Overall, a fantastic product for dorm living!"
Kabir Chugh
-
University of Massachusetts Amherst Student
"This product has made such a difference in my sleep quality. The added width and the super comfortable gel memory foam make my bed much more comfortable. The removable waterproof cover is a smart addition, making washing easy. If you're in a dorm and want to feel more at home, this is a must-have!"
Ethan Green
Turn Your Cramped Twin XL into a Spacious Sleep Haven
Expand a Bed is a proprietary, patent-pending Twin XL mattress topper that expands the width of any Twin XL mattress by 8” while providing industry-leading quality and comfort. It’s no secret that Twin XL mattresses are inherently cramped and uncomfortable. Expand a Bed is on a mission to change that.
Dual-Layer Comfort Engineered for Deep, Restorative Sleep
Expand a Bed utilizes a 3-inch deep sleeping surface constructed from industry-leading material to provide unmatched comfort. The base layer of the sleeping surface is constructed out of body-conforming lumbar support foam, designed to be firm enough to alleviate back pain but also forgiving enough to conform to your unique body type. The top layer of the sleeping surface is constructed out of cooling gel memory foam, specifically engineered to dissipate heat and provide a cloud-like feel.
Removable, Washable Cover with Water-Resistant Protection
Expand a Bed is wrapped in durable, water-resistant grey fabric for longevity and worry-free spills. Our industry-leading zipper system allows the top cover to be conveniently removed for easy machine washing.
Patent-Pending Design That Adds Space Without Replacing Your Bed
Expand a Bed utilizes a proprietary system of high-density foam side supports and tensioning straps to convert any Twin XL mattress from a 38" width to a 46" width.
More Room to Breathe 38 — 46 Inches of Stretch Space
Unmatched Compact Storage
See It From Every Angle
Explore Every Angle
Follow Us For Setup Tips & Real Dorm Looks
Join the Contact List for Exclusive Discounts
- Choosing a selection results in a full page refresh.
- Opens in a new window.