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Casper Mattress Review

We have an affiliate relationship with some companies where we get a percentage of sales if you click over from our site. Also, Casper provided financial support to allow JAKK Media (our company) to acquire Sleepopolis. See our full disclosures here.

When looking for a mattress online, it’s tough to miss Casper, as they are one of the biggest names in the bed in a box market. Casper has changed the construction of their mattress a few times and in this review I take a look at the latest iteration. Interested in finding out if the Casper is right for you? Read on for my full review!

In a hurry? Click here to read the review summary.

See how Casper ranks in my best mattress page


Casper started in 2013 and quickly became one of the biggest names in the bed in a box market. While Casper has begun to partner with retail stores, most recently Target (where you can try the mattress out in person), the company remains one of the most popular online mattress companies.

Casper has grown and they now offers a wide range of sleep products including bed frames, sheets and pillows. This review focuses on the flagship Casper mattress, but the company also makes the Casper Wave and Casper Essential, which come in at different price points and with differing constructions and features.


Casper is an all foam mattress, consisting of four layers and totalling 10 inches in height. When looking at the construction of the mattress it looks to me that Casper is looking to provide people with the pressure relief of memory foam, but the bounce and cooling benefits of latex-like foam.

Cover – The cover is 100% polyester and has a soft feel to it, as well as some thickness, which provides a bit of a cozy feeling. The cover snapped back into place quickly when I grabbed and pulled on it, meaning that you won’t have to worry about it bunching up when you move around and adjust positions on the mattress. I also found the cover to be pretty breathable, allowing air to flow through the mattress, which will help the sleeper stay cool.

Casper Mattress Cover

Close up of the Casper cover

Comfort Layer – The comfort layer of the Casper mattress is 1.5 inches of their proprietary response foam. This foam is pretty soft to provide comfort to the sleeper and is a bit like a latex foam, meaning it provides a quick response to pressure and gives the mattress some bounce. Also, like latex, this layer helps with cooling of the mattress to defend against sleeping too hot.

Memory Foam – Below the comfort layer is 1.5” of memory foam with a 4 lb density. This layer has a slow response to pressure and provides pressure relief for those that push through the comfort layer of foam. By placing the memory foam layer beneath the response foam, the Casper mattress should provide pressure relief without the feeling of being stuck that memory foam can cause. Another advantage of placing the memory foam underneath the response foam is that it defends against sleeping too hot, as memory foam has a reputation for trapping body heat.

Transition Layer – Consisting of 1.5 inches of poly foam with a 2.5 lb density, this layer is a bit firmer to help transition from the comfort of the soft layers above, to the support of the firm base below. The foam used in the transition layer of the mattress has a quick response to pressure, which adds more bounce to the mattress.

Base – The base of the Casper is 5 inches of poly foam with a 1.8 lb density. This layer is firm and has a quick response to pressure. It acts as the foundation of the mattress, supporting the layers above it and giving the Casper its shape. This layer also provides some durability to the structure as a whole.

Casper Mattress Construction

Showing the layers of the Casper mattress

FAQ: What is the difference between latex foam and memory foam?


After taking a look at the construction of the Casper, it’s time to discuss the feel and firmness of the mattress. I started by pressing into the mattress, and the initial feel is from the comfort layer of response foam. As I mentioned before, the layer has a quick response to pressure and snaps back into position pretty quickly when I remove my hand. I begin to feel the memory foam layer for pressure relief when I apply more force and push further into the mattress, but the mattress regains its shape quickly, which will help defend against feeling stuck in the mattress.

Casper Mattress Hand Press

Pressing into the Casper mattress

At this point I would like to note that people of different body types and shapes will feel firmness differently. Rather than giving just my opinion on the overall firmness level of the Casper, I enlisted three other people to give their opinion as well. This will give you a better sense of the firmness range you can expect from the mattress.

Casper Firmness Graph

Showing the firmness ratings from four testers

With responses in the 6-6.5/10 range, the testers feel that the Casper has a medium firmness, which would appeal to a wide range of sleepers. At this firmness level the Casper should provide both support and pressure relief for multiple sleeping positions, as long as your sleep needs aren’t too specific.

I gave the mattress a 6.5/10, which is what I would consider medium firmness. I found that I was comfortable in multiple positions and was able to adjust while sleeping, without feeling stuck. I also felt that the Casper did a good job of supporting my weight and kept my back in a good position, while still providing pressure relief, which we will take a closer look at in the next section.

Pressure Map

Rather than just describing the feel of the Casper to you, I wanted to give a visual representation of where someone may feel pressure points form while lying on a Casper mattress. To do this, I placed a pressure map on top of the mattress and lied on my back, side, and stomach. You can see the results on the image below where pressure is represented from blue (low pressure) to red (high pressure)

Casper Mattress Pressure Map

Pressure map for the Casper mattress showing me laying on my back, side, and stomach

When lying on my back, my weight is evenly distributed across my entire body, and the pressure map shows all blue for low pressure. I felt that the Casper did a good job of filling in the space beneath my lower back and providing some lumbar support, which is important for back sleepers. I did sink into the mattress a little bit but, with the memory foam layer beneath the response foam layer, I didn’t feel stuck and was able to change positions without interference.

Rolling onto my side I have a higher weight concentration over a lower surface area, so I dig a little further into the mattress and start to interact with the memory foam layer. Side sleepers need to be conscious of pressure points that can form at their hips and shoulders, and memory foam is great for this as it allows those areas to sink in a bit further to provide pressure relief. On the results above we can see that the pressure does rise slightly into the green range, but that is to be expected with a higher weight concentration. Given Casper’s medium firmness and memory foam layer I would say that the mattress will feel comfortable to most side sleepers.

Hip and shoulder pain? Check out my top picks for side sleepers.

Finally, on my stomach, my weight is again pretty evenly distributed and I didn’t feel any specific points of increased pressure. It’s important for stomach sleepers to have low pressure across the chest so they can breathe easily and the pressure map shows a good result there. In this position I felt the response foam did a good job of keeping my hips out of the mattress so that my back stayed aligned correctly.

Motion Transfer

If you plan on sharing your bed with a partner, you will want to know what it will feel like when the other person gets into and out of bed or tosses and turns during the night. This next test is helpful in showing the intensity of motion that is detectable from one side of the mattress to the other.

For this test I dropped a 10 lb steel ball from heights of 4 inches, 8 inches, and 12 inches and measured the disturbance on the other side of the mattress. This should be pretty intuitive: the bigger the lines, the bigger the disturbance.

Casper Mattress Motion Transfer Test

Motion transfer results for ball dropped from 4 inches, 8 inches, and 12 inches

The Casper shows a small disturbance for the 4 inch drop, which simulates someone rolling around and adjusting their position on the other side of the bed. The 8 and 12 inch drops show larger spikes in disturbance, which is to be expected, but I would still consider these to be good outcomes. Something to note is that while the spikes are a bit larger for the higher drops, the Casper does a good job of dissipating the disturbance.

Sinkage Test

In order to get a good idea of how someone might sink into a mattress, I use four balls of varying sizes and densities (a 6 lb medicine ball, a 10 lb steel ball, a 50 lb medicine ball, and a 100 lb medicine ball) and place them on the mattress to measure how much they compress the surface.

These different sizes, weights, and densities help to imitate different body parts or different sized people to show how far into a mattress you may sink.

Casper Mattress Sinkage Test

Mattress sinkage with 6 lb, 10 lb, 50 lb, and 100 lb balls

  • 6 lb medicine ball: 1 inch of sinkage.
  • 10 lb steel ball: 2 inches of sinkage.
  • 50 lb medicine ball: 4.5 inches of sinkage.
  • 100 lb medicine ball: 6 inches of sinkage.

Edge Support

If you’re going to share your bed with a partner and need to use the entire surface area of the mattress, then edge support is something you are going to want to take a look at. Foam mattresses sometimes struggle to live up to the edge support of traditional innerspring mattresses, so I wanted to have a look at how I would feel near the side of the Casper.

Casper Mattress Edge Support Laying

Edge support while lying near the edge of the Casper mattress

While lying on my back near the side of the Casper mattress, I found pretty even support from the center of the mattress to the side. I didn’t feel as if I would roll out of bed and I could hang off the mattress a bit and the compression was pretty minimal.

Casper Mattress Edge Support Side Laying

Edge support while lying on my side on the Casper mattress

In the image above I’m laying on my side near the edge of the bed and I think this shows hows the Casper holds up near the edges really well. There is a little bit of compression into the soft top of the mattress, but the mattress keeps its shape well and I felt secure in my position.

Casper Mattress Edge Support Seated

Support while sitting on the edge of the Casper Mattress

When I sat up on the side of the bed, think putting your shoes on in the morning or getting into bed at night, my weight is fully concentrated over one portion of the mattress. This position does a good job of showing how the edge of the bed will hold up when a higher amount of weight is applied and, while there is some compression through the soft layers, I would say the firm base of the Casper does a good job of supporting my weight and keeping its shape.

Basic Information

Casper Mattress Corner

Corner view of the Casper mattress

  • Sleep Trial: There is a 100 night trial period for the Casper mattress.
  • Warranty: Casper offers a 10 year warranty.
  • Shipping: The mattress ships free to the United States and Canada, and will arrive compressed in a box.

Just getting started? Begin your mattress search with my mattress reviews breakdown.

Size and Pricing Information

If you’re convinced the Casper is the right mattress for you, the size and pricing information for the mattress are below. Please note that these prices reflect standard pricing, but coupons are often available.

Twin39” x 75 x 10"44 lbs$550
Twin XL39" x 80" x 10"46 lbs$600
Full54” x 75” x 10”60 lbs$800
Queen60” x 80” x 10”71 lbs$950
King76” x 80” x 10”91 lbs$1,150
California King72” x 84” x 10”90 lbs$1,150

Is the Casper Mattress right for you?

Casper Mattress Front

Front view of the Casper mattress

Now that we’ve taken a deep dive into the Casper mattress, it’s time to discuss who it would be a good fit for.

  • Balanced foam feel – Because of the construction and the different materials used, the Casper brings the qualities of multiple foam types. The comfort layer provides the bounce and cooling properties of a latex foam, while the memory foam below provides pressure relief.
  • Looking for a mattress that accommodates a wide range of preferences – During the firmness portion of the review, all of the testers put the Casper in the 6-6.5/10 range on the firmness scale. A rating in this range is considered a medium firmness, and should provide a comfortable feel to a wide range of sleep styles.
  • Change positions while sleeping – The top layer of Casper’s proprietary response foam has a quick response to pressure, which gives the mattress some bounce, and helps defend against feeling stuck in the mattress. Along with that, the overall feeling and construction of the mattress puts it in the medium firmness range, meaning that it is firm enough to support most back and stomach sleepers, while being soft enough to provide pressure relief for side sleepers.
  • Looking to sleep cool – As discussed during the construction portion of the review, the comfort layer of the Casper is made of a latex-like foam, which has good cooling properties. By placing this layer above the memory foam, which can trap body heat, Casper has designed the mattress to defend against sleeping to hot.

And just in case you didn’t catch it – our disclosure regarding Casper: Casper provided financial support to allow JAKK Media (our company) to acquire Sleepopolis.

For more information on the Casper, visit and use code SLEEPWELL50

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Logan Block

Logan Block

Logan is the director of content at Sleepopolis and the main mattress man around these parts. He's a big fan of sleeping in many sleeping positions and weightlifting.
Logan Block

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