The Casper and Leesa mattresses are both extremely popular foam bed options, billed as one-size-fits-all or “universal comfort”, and designed to accommodate the majority of sleepers.
Both the Casper and Leesa mattresses are manufactured in the USA, and are committed to using high quality materials. Both use poly foams that are Certi-PUR certified, which means they do not contain flame retardant chemicals, formaldehyde, or heavy metals, such as lead or mercury.
However, there are some major differences between the two, and the following comparison review will pit these two giants in the bed-in-a-box industry against each other.
The Leesa is constructed from three layers of foam, and encased in a quilted, breathable, machine-washable poly-lycra fabric blend. The top layer of the Leesa is 2 inches of Avena foam, which is a durable foam that is designed to keep the sleeper cool, like latex, while eliminating bounce and motion transfer. The second layer of the Leesa is 2 inches of memory foam, meant to hug the body and provide pressure relief. The last layer of the Leesa is 6 inches of high-density support foam, which is meant to provide foundational support.
The Casper is constructed from four layers of foam and encased in a polyester cover. Casper’s cover is not machine-washable, and must be washed by hand. The top layer of the Casper is 1.5 inches of poly foam, meant to be responsive, provide bounce, and minimize heat retention. The second layer is 1.5 inches of memory foam, meant to hug the body and provide support and pressure relief. The third layer is 1.5 inches of transitional poly foam, meant to help evenly distribute weight. The bottom layer is 5 inches of high density support foam, and is meant to provide foundational support.
A side-by-side comparison of the Casper and Leesa can be found in the following table:
|Cost of a Queen||$950||$940|
|Total inches||9.5 inches||10 inches|
|Top layer||1.5 inches poly foam||2 inches Avena foam|
|ILD | PCF||3.5 PCF||20 ILD | 3.65 PCF|
|Middle Layer||1.5 inches memory foam||2 inches memory foam|
|ILD | PCF||ILD 15 | 3.5 PCF*||9 ILD | 3.0 PCF|
|Second middle layer||1.5 inches poly foam|
|ILD | PCF||2.5 PCF|
|Bottom layer||5 inches high density support foam||6 inches high density support foam|
|ILD | PCF||1.8 PCF||32 ILD | 1.8 PCF|
*Casper does not publish ILD or PCF information on their website. A member of Casper’s support team was able to provide me with the ILD and PCF information of their second memory foam layer, but not any of the additional layers. When pressed, they said this information was not available. This lack of transparency is surprising given Casper’s strong hold on the bed-in-a-box market.
Trial Period + Warranty + Shipping Information
Casper and Leesa both offer an 100-night trial to test their mattresses. If you are not satisfied within that time period, you can return either mattress for a full refund. At both Casper and Leesa, returned mattresses are theoretically donated to charity. However, if local charities are not accepting beds, they’re sent to a recycling center.
The following table provides shipping and delivery details for Casper and Leesa:
|Cost of Shipping||Free – including Alaska & Hawaii||Free – including Alaska & Hawaii|
|International availability||Canada, Germany, UK, Austria, Switzerland||Canada, Germany, UK|
|Shipment details||All size mattresses ship compressed in a 19 x 19 x 42 inch box||All size mattresses ship compressed in a 18 x 18 x 45 inch box|
|Shipping length||1-5 days||5-10 days (all Leesa mattresses are made-to-order)|
Customers in Hawaii or Alaska who return the Leesa mattress will be charged a fee of $100.
At both Casper and Leesa, customers who keep their mattress will be protected by a 10-year limited warranty that offers full replacement for any structural defects that arise during that time period. Generally this includes foam splitting and permanent indentations. For additional details on Leesa’s warranty, click here. For additional details on Casper’s warranty, click here.
Neither Casper nor Leesa provide in-home set up services. However, if you live in certain areas of New York, Los Angeles, Chicago, or the Bay area, you may qualify for Casper’s White Glove delivery service. This costs between $75-$100 depending on your zip code, and includes delivery, installation, and the removal of all packing materials. For an additional $50, Casper will also remove your old mattress.
Casper and Leesa are both medium-firm mattresses that will work for the vast majority of sleepers, and neither offers additional firmness options. However, Leesa is sometimes reported as slightly softer than Casper but on average, they are quite close in firmness.
Leesa handles motion transfer exceptionally well. If you have a restless partner, or different bedtimes, the Leesa should help reduce the likelihood of waking each other up.
Neither Casper nor Leesa has particularly strong edge support. Both mattresses are entirely made of foam and which doesn’t have the same edge support as other mattress components. If you require a mattress that allows you to sit comfortably on the edge of your bed, look elsewhere.
Both the Casper and Leesa mattresses will produce some off-gassing initially. However, the smell should dissipate within 24 hours.
Casper’s lack of transparency regarding their foam specifications raises a red flag here. ILD and PCF are standard measurements that indicate how well foam will hold up over time, as well as how responsive it is to weight. Withholding this information from their customers might indicate that Casper uses lower quality foams that may not age well. As they’ve only been in business for three years, we’ll have to wait and see.
Casper’s top layer is designed to give a bit more bounce than most memory foams. If you have an eye towards intimacy, Casper is a good option.
Sleeping Positions + Support
The Leesa is designed to support up to 600 pounds, and while the Casper does not have a weight limit listed on their website, it is likely very similar to the Leesa. As both mattresses use 1.8 PCF high density foam in their bottom support core layer, neither will be particularly durable over time for heavier sleepers.
If you weigh less than 130 pounds, you will not sink as deeply into either mattress, and both the Casper and the Leesa may feel too firm. This will be especially true if you are also a side sleeper.
If you weigh over 230 pounds, the Casper will feel much softer, but the top two comfort layers may not be thick enough to prevent the shoulder and/or hip from feeling the firmer support layers beneath. Sleepers in this category who want a medium-firm feel would be best served by a mattress that has at least 4 inches of top layer memory foam.
|Light (<130 lbs)||Average (130-230 lbs)||Heavy (>230 lbs)|
|Side||Both Casper and Leesa will feel very firm, and neither will conform or cushion the body well.||The Casper and Leesa are made for average-size people and should work well for most side sleepers with a BMI above 21.||Both Casper and Leesa will feel soft, but the Casper’s top layers may not be thick enough to support all pressure points.|
|Back||Back sleepers who prefer a firmer surface should be okay on either Casper or Leesa.||The Casper and Leesa are made for average-size people and should work well for back sleepers.||Both Casper and Leesa should work well for heavy sleepers who prefer to stay on their backs.|
|Stomach||Stomach sleepers prefer a firmer surface, so light sleepers should be okay on either Casper or Leesa.||The Casper and Leesa are made for average-size people and should work well for stomach sleepers.||Heavy stomach sleepers might prefer a firmer mattress.|
You’ll like the Leesa mattress if:
- You sleep with a partner or sleep in many positions, as the composition of Leesa is overall very amenable to the majority of sleepers and sleep positions.
- You feel strongly about corporate responsibility, as Leesa donates one mattress to charity for every ten they sell.
You’ll like the Casper if:
- You’re not picky about the technological specifics and just want a well-priced foam mattress for a great value, made in the USA.
You might not be suited for the Leesa mattress if:
- You want a plush, cushiony feel. While Leesa is very soft, it has less body contour than the Casper.
You might not be suited for the Casper mattress if:
- You have a tall or heavy body frame, as it’s edge support is lacking and the overall construction is less supportive than the alternatives in this market.
So, which mattress is best?
Both Leesa and Casper offer a mixed foam mattress for exceptional value and convenience. While Leesa and Casper are at roughly the same initial price point, Leesa offers more discounts and promo codes that make it slightly cheaper than the Casper.
Overall, you’ll probably prefer Casper if you’re looking for slightly more contouring and ease of movement on the surface, and you’ll probably prefer Leesa if you’re looking for a mattress with better motion isolation. Still not sure? Check out these individual reviews for Casper and Leesa for even more information.