
I often compared my previous mattress to a cloud. The older version of Casper’s high-end Wave model, which I bought in 2018, featured five layers of foam and no springs, giving me cozy nights of sleep—even though I’m usually a light sleeper. But as I’ve gotten older and developed some muscle tension from sports, I wanted to try a mattress with a little more support. So I was thrilled to put the Casper Atlas Hybrid Mattress to the test (the company provided a free mattress for this review).

Made from a blend of foam and springs, hybrid mattresses are considered to be the best of both worlds. Some foam mattresses don’t provide as much support as spring mattresses and can sag. On the other hand, some spring mattresses don’t offer adequate body pressure relief or sufficient motion isolation—that is, the ability to minimize or eliminate motion transfer from one side of the bed to the other (we’ll come back to this later).

This entry-level hybrid mattress combines three types of CertiPUR-US certified polyurethane foam, which has low levels of volatile organic compounds—a.k.a. VOCs—that affect indoor air quality. One type ensures comfort and optimal bounce, one helps prevent motion transfer and the third keeps the mattress from sagging at the edges. Then there are sturdy pocketed steel springs that provide a certain level of firmness.
The Atlas mattress is available in seven sizes, ranging from single to Split King (two Twin XL mattresses side by side), including Queen and California King.
This is the company’s basic hybrid model; a queen-size Atlas mattress retails for $1,199. Casper also sells two other, thicker hybrid models: The Original ($1,999 for a queen) and the Wave (now a hybrid; $3,999 for a queen). Casper regularly offers sales, so it’s worth checking the website often when it’s time to replace your mattress.

I was pleasantly surprised by the delivery process. First, it’s free and fast (I received my Atlas three days after ordering it), and the morning it was due to arrive, Casper confirmed the ideal time slot to receive the delivery.
The mattress is quite heavy—a good sign, according to mattress expert Derek Hales. Don’t feel like lugging that massive box all the way to the bedroom? The company offers an assembly service (which I didn’t try) in Toronto, Vancouver, Calgary, Halifax and Moncton for $99 plus tax, provided you’ve cleared the space where the mattress will go beforehand.
The Atlas arrived at my door, rolled up and compressed in a large cardboard box. Contrary to the manufacturer’s advice to open it where you’ll set it up, I opened it in my living room. That was a big mistake. Do it in the bedroom since it expands quickly and becomes tricky to move.

The mattress is firm, much firmer than my old memory foam one. But after more than five months of use, I’ve noticed that it conforms to my body’s curves without sinking in too much. My shoulders and hips stay aligned, reducing pressure points and allowing my muscles to relax, whether on my back or stomach. And the mattress has never sagged or bulged, even at the edges.
Whether I sleep with my partner or alone, with a thick or thin comforter, in summer or winter, I’m always hot at night and wake up easily in the morning. So I am happy to report that the Atlas' removable knit mattress cover wicked away heat and moisture effectively—I never woke up drenched in sweat. Plus, my partner’s movements—he leaves for the office earlier than I do—woke me up much less than with my previous mattress. (In other words, the Atlas offers good motion isolation.)
Furthermore, we didn’t notice any unpleasant new-mattress odour—referred to as “off-gassing”—when we unpacked and set it up.
This mattress is designed for those who prefer a firm feel. Support is now essential for me, but I prefer a slightly softer top layer, especially for sleeping comfortably on my side. I plan to set it up in a guest room or at the cottage. However, you can try it for 100 nights. If it doesn’t suit you, return it for free to receive a full refund.
In the market for some sleep upgrades? We also tested out Silk & Snow's Organic Mattress—here's an in-depth review—as well as these editor-approved sleep products. And here's what you need to know before you buy a mattress.
This article contains affiliate links, so we may earn a small commission when you make a purchase through links on our site at no additional cost to you.
Philippe is the former deputy editor-in-chief of Châtelaine. He writes C’est extra, a French newsletter where sharp taste meets a distinct, playful edge. Equal parts rigor and flair, his voice stands out on the page as much as in life. Chances are, you’ll spot him at the latest must-try restaurant in Montreal.