Casper mattresses
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Casper is one of the original bed-in-a-box brands, and its current entry flagship is Casper The One. It replaced the Casper Original, which is no longer sold, as the brand's go-to model for most shoppers.
The One is an 11-inch all-foam mattress: a soft knit cover over Casper's Breathe Flex open-cell foam, a layer of Align+ memory foam and a high-density Casper Core base. Independent testers rate it about 7 out of 10, so it's a medium-firm that leans firm. Support is continuous rather than zoned. It's fiberglass-free and designed and assembled in the USA.
Where it shines on paper is motion isolation, which earns a 5 out of 5 in our review-based ratings, so a restless partner is unlikely to wake you. Pressure relief is good at 4 out of 5. The trade-offs are typical of all-foam beds: average edge support, average cooling and very little bounce. Hot sleepers and people who sit on the edge of the bed to dress should keep that in mind.
Price is a strength. Expect about $1,149 for a queen at list price, often on sale for around $899. It comes with a 100-night trial and a 10-year limited warranty, which is standard but shorter than the 365-night trials and lifetime warranties from Nectar and Leesa at similar sale prices.
Who should shop Casper? Back and combination sleepers, and couples who prioritize a still, quiet bed. Who should skip it? Strict side sleepers who want a softer surface, hot sleepers and anyone who wants springy coil support.
See how Casper compares in Casper vs Purple, Casper vs Nectar, Leesa vs Casper, Casper vs Tuft & Needle and Casper vs Tempur-Pedic, or let the mattress quiz narrow it down.
Casper mattresses we cover
Casper The One
Memory foam · Medium-firm
- $899 queen
- 100 nights
- 10 years
- 11″ tall
Casper The One is Casper's current entry-level flagship. If you're looking for the Casper Original, it is no longer sold, and The One is its all-foam replacement. Under a soft knit cover it layers Breathe Flex open-cell foam, Align+ memory foam and a high-density base. Testers rate it 7 out of 10, which is firm for a medium-firm label. In this Casper The One review, it stands out for back sleepers, combination sleepers and couples who want minimal motion transfer at a mid-range price.
Casper vs other brands
Questions about Casper
Is Casper The One a good mattress?
For the right sleeper, yes. By the specs it's a solid medium-firm all-foam bed with excellent motion isolation and good pressure relief at a fair price, often around $899 for a queen. It's less impressive for cooling and edge support, so hot sleepers and people who use the full width of the bed may do better with a hybrid.
How firm is Casper The One?
Casper calls it medium-firm, and independent testers rate it about 7 out of 10. That makes it a good match for back sleepers and combination sleepers of average weight. Lighter side sleepers may find it a touch firm at the shoulders, while heavier stomach sleepers may want something firmer with more support.
What happened to the Casper Original?
The Casper Original is no longer sold. The One is now Casper's entry flagship and the model most shoppers will compare against brands like Nectar, Purple and Leesa. If you see the Original listed elsewhere, check that you're buying a new mattress with a valid warranty before you pay.