The 5 best dorm bed mattress toppers on sale right now

A young college student sleeps on the Viscosoft Serene Mattress Topper with a sale label in the bottom left-hand corner

(Image credit: Viscosoft)

If you're heading off to college soon, a mattress topper is the easiest way to make your dorm bed more comfortable. Luckily, we've found five great deals on bed toppers, including a sale where you can save 25% on the Serene Hybrid Mattress Topper at Viscosoft, with a 3" twin XL down to $149.95 from (was $199.95).

It's unlikely you'll be able to bring the best mattress for your sleep with you to college, but the right mattress topper is the next best thing. Here, we've rounded up the top five deals on the best mattress toppers, including Casper's 20% off sale and bed toppers under $50 from Linenspa and Lucid.

All of our picks are made from memory foam to soften a hard dorm bed, but we do have some firmer option from sleep brand Puffy. These are the best deals ahead of the Labor Day mattress sales in September, so we suggest snapping them up while you can.

4. Comfy Mattress Topper: was from $199 now from $159.20 at Casper
The Casper Comfy Topper is now 20% off, which is a huge price drop considering there's usually no deal on this topper (and when it is, it's 10% off). This sale brings a twin XL down to $175.20 from $219. While it isn't as cheap as the above offers from Lucid and Linenspa, it's still a great deal on a mattress topper that our Casper Comfy Mattress Topper review praised for its cloud-like comfort and excellent temperature regulation.

5. Puffy Deluxe Mattress Topper: was from $238 now from $202 at Puffy
This is the most expensive of our picks, but this deluxe mattress topper comes in both firm and soft, so it's great for stomach sleepers looking for more support. Our testers for our Puffy Deluxe Mattress Topper review also loved how it stays in place even for restless sleepers. Right now, you can get a twin XL for $211 (down from $248). Plus, you'll get a lifetime warranty, a 101-night sleep trial, and free shipping in one to two days.

What size are dorm beds?

The majority of dorm rooms are equipped with twin XL beds and mattresses (39 inches wide and 80 inches long), meaning you'll need to find twin XL bedding and accessories. Luckily, Twin XL is a standard bed size so you won't have to look too hard for suitable mattresses, toppers, and other bedding.

Our guide to this year's best mattresses for college students features twin XL beds for under $500, and you can find even cheaper beds in this year's best cheap mattress guide.

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Frances Daniels is a PPA-accredited journalist and Sleep Staff Writer at Tom's Guide with an MA in Magazine Journalism from Cardiff University. Her role includes covering mattress and sleep news and writing sleep product reviews and buyer's guides, including our Best Hybrid Mattress 2025 guide. She is hugely interested in the relationship between good sleep and overall health, interviewing a wide array of mattress and sleep experts to create well-informed articles about important topics such as nutrition, sleep disorders (from sleep apnea to night terrors), lucid dreaming, sleep hygiene, and mattress care. She is also our specialist on mattress toppers — producing mattress topper reviews and taking care of our Best Mattress Toppers 2025 guide — and takes the lead on all content related to fiberglass-free mattresses for a clean, non-toxic sleep. Outside of Tom's Guide, she has written for Ideal Home, Homes & Gardens, and Marie Claire.