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.