Leesa vs. Casper - Our Mattress Comparison



  • Sleeps cool
  • Responsive



  • Best for combo sleepers
  • Zoned support

Casper and Leesa are two very similar and top-rated mattresses, but which one should you get? That’s precisely what we’ll be trying to figure out in the mattress comparison, going through the pros and cons of each mattress, the similarities between the two, and the differences. The idea is to try to help you figure out whether you should get one or the other and which mattress fits your needs best.

We can start with some similarities between the both, and there are a lot of them. The general concept of the construction is pretty similar. They’ll have a latex-like layer on top over memory foam in the comfort layer. They are also in the same general firmness range, which is essential to note. Both are very popular, come with excellent customer service and immensely customer-friendly policies.

So, we’ve determined that these two mattresses are pretty similar, but are there any differences between the Leesa vs Casper mattress, and if so, what are they? Stick around and find out!

In addition to this comparison, we recommend reading our review of each brand:

Mattress Construction Comparison


The Leesa mattress consists of three interior foam layers and a quilted cover made from a Lycra-polyester blend. The bed is 10 inches tall, consisting of three layers, with the top one made of Premium Foam with a 2-inch thickness

This is a type of polyfoam engineered and developed by Leesa. It is different from the standard memory foam in that it is bouncier, having a more latex-like feel, while still being responsive enough to reduce pressure points. It has an Indentation Load Deflection (ILD) of 20 and 3.5 Pounds per Cubic Foot (PCF). This means that the mattress is likely to be durable over the long run, resisting indentation and sagging, while allowing for some balanced sink and contouring. 

The bottom layer consists of support polyfoam, 6 inches in thickness, and a 1.8 PCF density, while the layer in between these two has an ILD of 9 and 3 PCF over 2 inches of memory foam, adding responsiveness.


On the other hand, the Casper is a bit thinner overall, with a thickness of 9.5 inches, but also has an extra interior layer compared to the Leesa. Each layer is made of foam, with the top one manufactured from polyfoam, which is meant to offer a balance of bounce and sink, while getting rid of heat, allowing you to remain cool throughout the night. This is a massive bonus for people who tend to sleep hot and get sweaty during the night. 

The second and third layers of foam are also 1.5 inches thick each. The second one is made of high-density memory foam, which is intended to enhance the pressure relief and contouring, while the third is Casper’s own Zoned Transition foam, which is firmer and less subject to contouring and sinking. This layer is intended to support the top two layers and give them a bit of firmness before resting on the support polyfoam layer on the bottom. The fourth layer is 5 inches thick and is meant to act as support for the rest.

Mattress Firmness Comparison


Once you lie down on a Leesa mattress, you’ll immediately notice that there’s a neutral feel to it. What we mean by this is that the memory foam layer underneath that is responsible for that viscous sinking feel is barely felt. Depending on what you’re looking for, this could be a great thing or something you’d like to avoid. 

With this mattress, you can expect an airy and light feel that a comfortable neutral bed can give, and you’ll feel like you’re floating on a cloud. It doesn’t let you sink too deep and get enveloped in the memory foam, keeping you on top at all times. 

The neutral feel of the mattress is the main reason behind its immense popularity since it is hard to find anyone who would be immediately opposed to it. On the firmness scale, the Leesa sits comfortably at a medium, making it more accommodating for a broader range of people.


While Casper and Leesa are similar in a lot of ways, as we’ve discussed earlier, they do have a few distinct differences setting them apart, the primary one being in the way they were constructed. This may sound confusing since you already know they’ve both been made using neutral foam and memory foam, but the difference is in the way these materials were distributed

As we mentioned above, a Leesa mattress feels like laying on a cloud. On the other hand, a Casper has a softer, more foam-like feel, which we would describe as more akin to lying on top of a huge teddy bear. In absolute terms, there’s no difference in quality; it only depends on what you prefer. In terms of firmness, the Casper also sits in the middle of the scale, making it suitable for many sleeper types.

Sleep Experience

Many factors come together to create the overall sleep experience we get from a particular quality mattress. First and foremost, a mattress’s job is to provide an adequate level of support. It should spread your weight as evenly as possible across its surface while providing enough contouring and sink to give relief to those all-important pressure points.

Another thing that we look at when discussing sleep experience is the dissipation of moisture and body heat. This is important for those people who tend to sleep hot, especially, and a good mattress should keep you cool as you sleep. We’ll discuss these and other factors when it comes to Leesa vs Casper in more detail below.

Motion Transfer and Edge Support

Memory foam mattresses generally do well when motion transfer is concerned, and not as well when it comes to edge support. The reason for their slightly worse performance in terms of edge support is the fact that their edges are not well defined since they typically come compressed in boxes for easy shipping. 

Even though these two brands do the same thing, they exceeded our expectations in this category. Some compression is noticeable when you sit on the edge, but there shouldn’t be any issues when it comes to sleeping near the edges of either of these beds. Couples who like to be able to use the whole surface of their bed when sleeping will find this information useful. 

On the subject of motion transfer, both beds perform great, which is precisely what we expected. You can get up to go to the bathroom in the middle of the night without worrying about waking up your partner.


Both of these mattresses do a very good job keeping you temperature-neutral throughout the night. So, if you tend to sleep hot, this is not going to be the thing that sets these mattresses apart for you, as you can expect reliable results from both. 

Neither of them will actively keep you cool either, but they do a good job at regulating temperature, so you won’t be waking up in a puddle of sweat unless you have a nightmare. Even though some other foam mattresses have a reputation for retaining heat, both of these seem to avoid this issue

The open-cell top layer of the Casper, for instance, allows a sufficient amount of airflow around your body, especially since there’s not too much sink. When it comes to the Leesa, the Premium Foam layer keeps you on top of the mattress while keeping heat away from your body.

Sinkage and Bounce

The Leesa and Casper are both memory foam mattresses, which gives them the classic feel of contouring and sinkage. They both do a great job with contouring, giving you the necessary pressure-point relief while avoiding the problem of letting you sink in too deep and making you feel trapped. 

There’s a comfort layer between you and the memory foam in each of these mattresses, which seems to get the job done in this regard. When it comes to bounce, these mattresses are never going to do as well as a traditional innerspring mattress, due to their memory foam construction. However, they both do surprisingly well at retaining some springiness and mobility, considering what we’re used to from standard all-foam beds. 

Between the Casper mattress vs Leesa, we need to mention that Leesa has a slightly higher level of bounciness thanks to its latex-like top layer, even though the Casper also has a quick response, and the difference is barely perceptible.

Off-gassing and Smell

Foam mattresses usually emit a chemical smell when first taken out of the box. We refer to this odor as off-gassing or ‘new mattress smell.’ This is a gas consisting of a group of chemicals being released into the air. The chemicals build up while the mattress is rolled up in the box, so when you take it out, the smell is particularly potent. 

However, off-gassing is not dangerous for adults, as long as you keep the room well ventilated for the first few hours after setting up the bed. If you have an infant or small child, get them out of the room for a couple of days until the bed is fully formed, at which point the off-gassing will stop. 

These two mattresses emit a similar level of odor for the first few hours upon setting up. The amount of off-gassing also depends on how long the mattress had been sitting in the box before shipping, which is something you won’t be able to control.


Both of these mattresses were built with an idea of responsiveness in mind, so the comfort layers and the foam underneath compress based on how much pressure and weight is put on them. Like most foam beds, they contour to your body, giving you support where most necessary, relieving pressure points and helping keep your spine in alignment throughout the night. No matter which sleeping position you prefer, this is a crucial factor in any mattress. 

The Leesa and Casper both do a great job in terms of responsiveness, promoting spinal alignment, so you should not worry about this aspect if you’re thinking about getting either of these beds. Between them, Casper has a slight advantage, offering a bit more contouring due to its all-foam top layer, compared to Leesa’s bouncier latex foam.

Mattress Shipping and Trial Period

Casper and Leesa both offer a risk-free, 100-night trial, and a full refund if you return the mattress within that period. That being said, there’s a stipulation in Leesa’s policy requiring you to try the mattress out for a minimum of 30 nights before being able to return it, while you can return the Casper after only one night if you so choose. Casper will have your mattress picked up by a local charity or recycling center, while it’s not clear what happens to your Leesa if you decide to return it. 

Both companies offer a 10-year warranty, which covers indentation of an inch or more, manufacturing defects and physical flaws. The main difference between them is reflected in the fact that Casper will pay for shipping your mattress back for replacement or repair, while the buyer pays for these costs with Leesa. These mattresses are not cheap to ship, so this could make a difference in your decision.


These are both top-notch mattresses from reputable bed-in-a-box companies. They both have a medium firmness level and offer comfort and support at a reasonable price. The Leesa and the Casper are both made of several layers of memory foam, including a top comfort layer. Both have an excellent level of bounce, good temperature control and lots of breathability. You won’t feel stuck or trapped within either of these mattresses during the night while being able to stay comfortable in any position due to their excellent balance of sink and bounce. 

Ultimately, the choice between Casper vs Leesa will come down to personal preference and your needs as an individual or as a couple. We recommend giving both mattresses a try before committing to a purchase – it is free, after all.