Trying to make comparisons between mattresses can be extremely difficult. With so many options out there, there comes a point where it seems like youโre just looking at the same white rectangle again and again. This mattress comparison is designed to remove the marketing speak and other sales tactics youโd find in a typical mattress store. Weโll be breaking down the Casper vs. Natureโs Sleep mattresses looking at how they are constructed, materials, feel, comfort, cooling, and more. By the end you should have the information you need to make the most informed and best decision for you.
Looking for the quick version? Jump to the end and check out the review summary for the short version.
Casper Mattress Review
Foam Layers
The Casper mattress is a hybrid mattress built from 4 different foam layers. Hybrid mattresses use different types of foam to maximum certain benefits, while minimizing other negative attributes.
- Top Layer (poly foam) โ 1.5โณ of responsive poly foam. This layer provides the comfort, cooling, and bounce for the mattress.
- Second Layer (memory foam) โ 1.5โณ of memory foam. This layer provides support and pressure relief. It is placed below the poly foam layer to help avoid any potential heat retention issues that can sometimes result from memory foam. It has a density of 4.0 PCF (pounds per cubic foot).
- Third Layer (support foam) โ 1.5โณ of poly foam. This is a transitional poly foam designed to help ease sleepers into the base foam. It has a density of 2.5 PCF.
- Bottom Layer (support foam) โ 5.0โณ of support poly foam. This layer of foam acts as the foundational base for the mattress. It supports the above layers. It has a density of 1.8 PCF.

Cover
The cover of the Casper mattress is a poly blended fabric. The white piece is a knit fabric thatโs created in South Carolina. It is 100% polyester. The grey side panel pieces are a 50/50 blend of polyster and polypropylene. The side panel fabric is imported from Belgium.
The cover has a nice softness to it and has a good stretch. The grey pieces are fairly sturdy and serve as a good perimeter for the mattress. The white piece has a degree of porousness to it, which is great for cooling and breathability.

Firmness, Feel, & Support

The memory foam, latex, and heavy-duty poly foam work together to offer sleepers a beautifully balanced feel!
The Casperโs firmness is a 6-7 out of 10 on the firmness scale (where 10 is the most firm). Iโm about 150 pounds. From my perspective the Casper feels at a 6 out of 10. However, many of my readers have contacted me to say that they thought the Casper was more on the firmer side. Based on this feedback I believe the Casper has a tendency to feel slightly firmer for heavier sleepers. If youโre 180+ pounds youโll likely feel the Casper is closer to a 7 out of 10 on the firmness scale. This is because youโll sink deeper into the mattress, engaging the memory foam and support foam layers more.
In terms of foam mattresses Casper originally made a name for themselves as one of the more bouncy foams. Prior to Casper when people heard the word foam they would associate it with being very firm and often resulting in that โquick sandโ / stuck feeling. The Casper does a good job of shaking this stereotype off. The latex layer on top of memory foam results in a nice balanced bounce feeling, 1-1.5โณ of sinkage (in a normal lying down position), good hug / body contour, and good cooling. Support is consistent and stable in all sleeping positions.

Pricing

The memory foam, latex, and heavy-duty poly foam work together to offer sleepers a beautifully balanced feel!
| Size | Price |
|---|---|
| Twin | $595 |
| Twin XL | $695 |
| Full | $995 |
| Queen | $1,095 |
| King | $1,295 |
| California King | $1,295 |
Other Details
- Shipping โ 1-5 days, free shipping anywhere within the US and Canada
- Warranty โ 10 years, fairly standard
- Trial Period โ 100 days
- Returns โ very easy, if you arenโt happy just contact customer support and theyโll make it right. You can get 100% money back if you decide it isnโt right for you within 100 days.
Natureโs Sleep Mattress Review
For this review weโll be looking at the Natureโs Sleep Emerald gel memory foam mattress. Natureโs Sleep has many models within their full line. The Emerald gel is their newest model using some of their most advanced foams.
Foam Layers
The Natureโs sleep mattress is built from 4 different layers of advanced foam. Itโs a slightly thicker mattress at 12โณ thick.
- Top layer โ this is a 1.0โณ layer of visco memory foam. This layer provides great softness and comfort. Itโs also highly reactive, so it will move and change with you as you move around during the night.
- Second layer โ this is a 2.0โณ layer of gel memory foam. Gel infused memory foam helps to absorb heat from the surface level of the mattress. This heat is expelled out of the sides and bottom of the mattress, resulting in a constant flow of cool air into the mattress.
- Third layer โ this is a 1.0โณ layer of Vitex memory foam. It helps to work with the gel memory foam layer to provide deep compression support and pressure relief. Like all of the memory foams within the mattress itโs also highly breathable and responds quickly to changes in position. This layer also acts to create what Natureโs Sleep calls the โelevator effectโ. It helps stomach sleepers by providing more / less support based on weight and pressure. This helps maintain proper spinal alignment and reduces pressure on your internal organs and your breathing.
- Bottom layer โ this is an 8.0โณ layer of high-density support foam. This layer provides deep compression support, breathabilty, and acts as the foundation for the top comfort layers.

Cover
One look and feel of the cover and itโs easy to tell itโs a quality piece of fabric. The top white portion of the cover is a poly / spandex / visco blend. Itโs quite thick (thicker than Casper), has a traditional floral style, and it does a good job at helping to increase the cooling of the mattress.
The grey side panels that run along the perimeter of the mattress are a micro-suede. The cover is removable, but not machine washable. Also, the cover is anti-microbial and allergen resistant.

Firmness, Feel, & Support
The Natureโs Sleep mattress has a fairly unique feel. Itโs a 6 out of 10 on the firmness scale (where 10 is the most firm). The mattress has been specifically designed to be ideal for stomach sleepers. The foam layers work together to create an โelevator effectโ. This effectively means that the mattress adds or reduces support based on weight, pressure, and position to help provide stomach sleepers with an improved sleeping position. This position helps keep your spine straight, reduce strain on breathing, and reduce pressure on internal organs.
While the mattress is designed with stomach sleepers in mind, itโs still a very good option for non-stomach sleepers as well. My wife sleeps on her back and side and found the Natureโs Sleep to be a comfortable option.
This mattress has a bit of a cross over type feel. Itโs not exactly like traditional memory foam, but itโs also not like a hybrid, latex, or polyfoam mattress. Thereโs a fairly high degree of hug. In a normal lying position youโll see 1.5-2โณ of sinkage. Despite the depth of the hug, I never really felt stuck in the mattress. The memory foams within the Natureโs Sleep are more advanced than traditional memory foam. This allows you to move around and have the mattress more quickly adjust to your new position.
As a stomach sleeper I was fairly impressed with the comfort and support it was able to achieve. This is the first mattress Iโve slept on that was designed specifically for stomach sleepers. It really does create a nice feel. I was well supported without creating pressure points on my stomach, back, and side.

Pricing
| Size | Price |
|---|---|
| Twin XL | $2,200 |
| Queen | $2,800 |
| King | $3,400 |
| California King | $3,600 |
Other Details
- Shipping โ 1-3 days, free anywhere within the US
- Warranty โ 20 years, one of the better warranties in the industry
- Trial Period โ no trial period offered, you can find these at Costco or other retailers to try them in-store before you buy though
- Returns โ returns are only accepted on unopened, damaged, or defective mattresses, make sure you contact the manufacturer before returning
Casper vs. Natureโs Sleep Mattress Comparison
Below is our complete side-by-side comparison of the Casper vs. Natureโs Sleep mattress (Emerald Gel model).
| Casper | Natureโs Sleep | |
|---|---|---|
| Foam Layers | 1.5โณ latex foam, 1.5โณ memory foam, 7.0โณ support foam | 1.0โณ visco memory foam, 2.0โณ gel memory foam, 1.0โณ Vitex memory foam, 8.0โณ support foam |
| Height | 10โณ | 12โณ |
| Cover | Soft, decent thickness, good stretch, good cooling | Visco / poly / spandex blend, traditional floral design on top, good breathability, soft |
| Firmness | 6-7 out of 10 | 6 out of 10 |
| Support | Very good | Very good |
| Motion Transfer | Very minimal | Very minimal |
| Price โ Queen | $850 ($800)* | $2,800 ($1,120)* |
| Price โ King | $950 ($900)* | $3,400 ($1,360)* |
| Warranty | 10 years | 20 years |
| Trial Period | 100 days | None |
| Shipping | Free, 1-5 days, compressed in a box | Free, 1-3 days, compressed in a box |
| Refunds & Returns | Yes | For unopened, damage, or defective items only |
*Final price after discounts
Should you buy a Casper or Natureโs Sleep mattress?
I like both of these mattresses a good bit. I think they are both great mattresses in their own right. While there are similarities between the Casper and Natureโs Sleep they are also quite differentโฆso much so that I think itโs really hard to make a fair comparison between them. I think the Casper or Natureโs Sleep could be the right mattress for you depending on your specific needs, desires, and other sleep preferences.
I would recommend the Casper mattress for you if:
- Youโre looking for the most inexpensive option โ Casper (Queen) is $320 cheaper than Natureโs Sleep with all discounts applied
- You want more bounce โ with a top layer of latex Casper has a bit more bounce than the Natureโs Sleep.
- You want a non-memory foam feel โ despite the fact it has a middle layer of memory foam in it the Casper doesnโt feel anything like traditional memory foam. Thereโs no deep sinkage, thereโs no feeling stuck, and thereโs no feeling like โquick sandโ. Itโs quite responsive and changes quickly to your movements.
- You want a leaner aesthetic โ the Casperโs 10โณ profile gives it a sleeker modern aesthetic look compared to the 12โณ profile of the Natureโs Sleep.
- Check out my Casper mattress review for more information.

The memory foam, latex, and heavy-duty poly foam work together to offer sleepers a beautifully balanced feel!
I would recommend the Natureโs Sleep mattress for you if:
- Youโre a stomach sleeper โ the Natureโs Sleep Emerald gel mattress has been specifically designed for stomach sleepers. It does a wonderful job of helping support stomach sleepers to ensure proper spinal alignment and easing pressure on breathing / internal organs. Itโs also a good mattress for side / back sleepers, but where it really crushes it is for stomach sleepers.
- Youโre want better deep compression support โ the Natureโs Sleep is 12โณ. The 2โณ of extra thickness results in better deep compression support (which is a big factor, especially for heavier sleepers). Additionally, the extra thickness will result in improved longevity and durability of the mattress.
- Youโre looking for a memory foam feel, but one with more responsiveness โ the Natureโs Sleep definitely has a bit of the classic memory foam feel. Thereโs a high degree of hug and body contouring. While it does feel a bit like classic memory foam it is also quite responsive. This means it will change its shape more quickly to adjust to your movements.
- You want to buy from a more established company โ Natureโs Sleep has been in the business a long time. Theyโve been creating great sleep products for 15 years and have a very well established reputation.
Check out my comprehensive review of the Natureโs Sleep mattress