Casper Onyx Split King Mattress (2 TWXL)
Casper Onyx Split King Mattress (2 TWXL)
Will It Fit?
SKU: 5000061P


4.5 million happy sleepers and counting.


4 out of 5 sleepers recommend Casper to a family member.


88% of customers report improved sleep quality.


4.5 million happy sleepers and counting.


4 out of 5 sleepers recommend Casper to a family member.


88% of customers report improved sleep quality.


4.5 million happy sleepers and counting.


4 out of 5 sleepers recommend Casper to a family member.


88% of customers report improved sleep quality.


4.5 million happy sleepers and counting.


4 out of 5 sleepers recommend Casper to a family member.


88% of customers report improved sleep quality.






100+ product tests, 25 prototyping & testing machines and 1 ergonomist to ensure the best sleep humanly possible.


Casper tirelessly tests every foam and thread to ensure the best balance of comfort, support and cooling.


Every material that Casper uses must help sleep and must be tested. No fads, just thoughtful design crafted by sleep experts.


100+ product tests, 25 prototyping & testing machines and 1 ergonomist to ensure the best sleep humanly possible.


Casper tirelessly tests every foam and thread to ensure the best balance of comfort, support and cooling.


Every material that Casper uses must help sleep and must be tested. No fads, just thoughtful design crafted by sleep experts.


100+ product tests, 25 prototyping & testing machines and 1 ergonomist to ensure the best sleep humanly possible.


Casper tirelessly tests every foam and thread to ensure the best balance of comfort, support and cooling.


Every material that Casper uses must help sleep and must be tested. No fads, just thoughtful design crafted by sleep experts.


100+ product tests, 25 prototyping & testing machines and 1 ergonomist to ensure the best sleep humanly possible.


Casper tirelessly tests every foam and thread to ensure the best balance of comfort, support and cooling.


Every material that Casper uses must help sleep and must be tested. No fads, just thoughtful design crafted by sleep experts.
Size
split king
Mattress Dimensions
80"l x 38"w x 11"h
Mattress Type
foam
Sleep Position
side/back/stomach
Comfort:medium
extra soft
soft
medium
firm
extra firm
Temperature Management:good
basic
good
superior
premier
ultimate
Pressure Relief:good
basic
good
superior
premier
ultimate
Support Level:good
basic
good
superior
premier
ultimate
Features
- Top layer of memory foam supports pressure points and cradles your body.
- Open-cell foam lets air flow through for sleeping cool all night.
- Durable base foam reinforces the top layers.
- High-quality materials promise long-lasting comfort.
- Foams are certified by the CertiPUR-US program, meaning they are made without ozone depleting chemicals and regulated by the Consumer Product Safety Commission Low VOC (Volatile Organic Compound) emissions for indoor air quality (less than 0.5 parts per million).
SKU: 5000061P
Customer Reviews
Casper Onyx Split King Mattress (2 TWXL)
3.7 out of 5 stars
Casper Onyx Split King Mattress (2 TWXL)
Casper Onyx Split King Mattress (2 TWXL)
Casper Onyx Split King Mattress (2 TWXL)
Not like expected
The mattress is disappointing. I have back and shoulder pain. Nothing like my previous experience with Casper.
Casper Onyx Split King Mattress (2 TWXL)
Excellent
Sleeps so well
Casper Onyx Split King Mattress (2 TWXL)
Feels like i can feel something in ny back medal not sure. I got a 2inch foam topper feels a little better.


4.5 million happy sleepers and counting.


4 out of 5 sleepers recommend Casper to a family member.


88% of customers report improved sleep quality.


4.5 million happy sleepers and counting.


4 out of 5 sleepers recommend Casper to a family member.


88% of customers report improved sleep quality.


4.5 million happy sleepers and counting.


4 out of 5 sleepers recommend Casper to a family member.


88% of customers report improved sleep quality.


4.5 million happy sleepers and counting.


4 out of 5 sleepers recommend Casper to a family member.


88% of customers report improved sleep quality.






100+ product tests, 25 prototyping & testing machines and 1 ergonomist to ensure the best sleep humanly possible.


Casper tirelessly tests every foam and thread to ensure the best balance of comfort, support and cooling.


Every material that Casper uses must help sleep and must be tested. No fads, just thoughtful design crafted by sleep experts.


100+ product tests, 25 prototyping & testing machines and 1 ergonomist to ensure the best sleep humanly possible.


Casper tirelessly tests every foam and thread to ensure the best balance of comfort, support and cooling.


Every material that Casper uses must help sleep and must be tested. No fads, just thoughtful design crafted by sleep experts.


100+ product tests, 25 prototyping & testing machines and 1 ergonomist to ensure the best sleep humanly possible.


Casper tirelessly tests every foam and thread to ensure the best balance of comfort, support and cooling.


Every material that Casper uses must help sleep and must be tested. No fads, just thoughtful design crafted by sleep experts.


100+ product tests, 25 prototyping & testing machines and 1 ergonomist to ensure the best sleep humanly possible.


Casper tirelessly tests every foam and thread to ensure the best balance of comfort, support and cooling.


Every material that Casper uses must help sleep and must be tested. No fads, just thoughtful design crafted by sleep experts.






