Casper One
GoodBed Expert Review
Our Take on Casper One

Founder of GoodBed, Leading Mattress Expert
- Want a medium-firm mattress (i.e., just a little firmer than average)
- Are either a back or stomach sleeper
- Would like a mattress that performs very well when used with an adjustable base
- Enjoy sleeping 'on' your mattress while being just a little hugged or cradled
- Like just enough bounce that your mattress doesn't feel completely 'dead'
- Prefer a slightly below average amount of 'memory feel'
- Are a side sleeper (though this mattress can be good for side sleepers who prioritize firm support over extra pressure relief)
- Have a strong tendency to sleep hot (temperature regulation is OK, but not the best)
- Regularly sit or sleep along the edge of your bed (edge support is good, but not the best)
- Want a natural or organic mattress
Casper Mattresses Overview
GoodBed Editorial
In-depth, hands-on demonstration and comparison of Casper mattresses, with video, images and comments on comfort, cushioning, edge support and more.
See our full reviewMaterials & Construction
Cover | Stretch knit |
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Comfort Layers | 1.5″ HD poly foam ("Breathe Flex Foam") |
Transition Layers | 1.5″ memory foam ("Align Memory Foam") |
Support Layers | 8″ HD poly foam ("Casper Core") |
Total Thickness | 11'' |
Compare These Products
Casper One vs. Other Beds
Compare the Casper One mattress side by side with other Casper models, or with mattresses from other brands.
Where to Buy
Casper One

Casper Online Seller
- Free delivery
- 100-day return policy
- Financing available

- Free delivery ($999+)
- 120-day return policy
- Lowest price guarantee
- Financing available
Frequently Asked Questions
Casper One
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In our evaluation of the Casper One mattress, we found it to be a Medium-Firm (4) on the GoodBed rating scale (1= firmest, 9 = softest).
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Mattress matching is highly personal. This is why GoodBed refuses to publish bogus "best mattress" lists and instead created an advanced mattress matching tool called the GoodBed Quiz. This quiz can assess your requirements in just a few minutes, and then calculate your personal Match Score for the Casper One mattress, along with any of the other 800+ mattresses that we've evaluated.
To see your Match Score for the Casper One, simply use this link to take the GoodBed Quiz. Your Match Score for this mattress will be shown at the top of your quiz results, and will include a detailed explanation of how it matches up with your personal mattress requirements. Each Match Score is based on over 50 different Mattress DNA™ attributes that we measure through our proprietary mattress testing framework.
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Yes, the Casper One mattress is adjustable base compatible. This means it is designed to be used on an adjustable base without incurring damage or voiding the warranty. In our review of this mattress, we tested it on an adjustable base to look for any adverse effects as the head and foot are elevated, and to see how well it conforms to the contours of the base both with and without the weight of a sleeper. Overall, we found the One to have very good adjustable base compatibility.
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- Length: 10-year warranty.
- Indentation coverage: 1" and deeper.
- Proration: 10 years of full ("non-prorated") replacement coverage.
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Here are the in-home trial details for mattresses purchased from the Casper website:
- Policy: Comfort Guarantee -- Mattresses can be returned for refund for up to 100 days
- Fees: No return or exchange fees.
- Notes: 100 day trial period with free returns, including in-home pickup from Casper.
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Here are the delivery terms for mattresses purchased from the Casper website:
- Policy: Delivery available - Free with any mattress purchase
- Set-up: Set-up not available
- Removal: Removal of old mattress not available
- Timing: 1-5 days in the US and Canada
- Notes: Free national UPS delivery to your door. Add'l fees may apply for HI, AK, and certain areas of Canada.
Reviews One
Expert Q&A
See questions from other mattress buyersAdditional Information
General Description
Our signature all foam mattress designed with a responsive yet supportive medium-firm feel is perfect for any sleep style.
- Cozy Cover, a buttery soft and airy knit blend helps make your mattress even cozier.
- Breathe Flex Foam, a responsive and breathable open cell foam soothes you to sleep with the perfect bit of bounce.
- Align Memory Foam, pressure-relieving memory foam cradles your body to help you stay asleep.
- Supportive Core, a firm Casper Core prevents sinking and sagging.
Warranty
- Length: 10-year warranty.
- Indentation coverage: 1" and deeper.
- Proration: 10 years of full ("non-prorated") replacement coverage.
About This Model
Status | Active (released 2024) |
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Manufacturer | Casper |
Line | Casper (Foam) |
Comfort Level | Medium-Firm |
Surface Type | Unquilted |
Support Type | Foam |
Build Details |
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Editor's Note(s)
- The Casper One is a descendant of the original Casper mattress.
Corrections
Have an update or correction to our information about Casper One? If so, please take a moment to suggest an edit.