Allswell Vs. Casper – Which Should You Choose?

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Casper’s flagship all-foam mattress and the hybrid option from Walmart’s Allswell are both compelling options for mattress shoppers. Both contain memory foam and use materials of certified quality. The mattresses differ a bit in feel, which we will go over in this Allswell Vs. Casper mattress comparison.

Make sure to check out some of our other popular Allswell comparisons like Allswell vs. Nectar and Allswell vs. Saatva before making a purchase decision.

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  • Good for stomach sleepers 
  • Has more of a memory foam feel on top

Doesn't expire

Save $100
  • Use the code "MATTRESSCLARITY" to save $100 on your order!
  • A good match for side sleepers 
  • Has a balanced foam feel

Doesn't expire

Allswell Vs Casper Overview

Allswell is Walmart’s mattress brand, and they’re sold at affordable rates. They sell several options, including the Allswell Luxe and Allswell Supreme. In this mattress review, we’ll focus specifically on the original Allswell.

Casper is perhaps one of the most popular bed-in-a-box brands. It’s made out of pressure-relieving memory foam, and it’s great for a variety of sleepers. In addition to the original model, Casper also sells the higher-end Wave Hybrid and Casper Element.

Below, we’ve outlined who these options may be right for.

Who Should Get The Allswell?

  • People who like memory foam
  • Stomach sleepers
  • Fans of a firmer mattress

Who Should Get The Casper?

  • Side sleepers
  • Fans of a balanced foam feel

Similarities Between The Allswell And Casper?

When comparing online mattresses, we always start by looking at how the two brands are alike. Read on to learn about the similarities between the Allswell and Casper.

  • Both contain memory foam.
  • Both use CertiPUR-US certified foams, which means their materials are considered more eco-friendly than typical mattress materials.
  • Both have 100-night trials and have great customer service.

Read our full Allswell mattress review.

Key Differences Between The Allswell And Casper?

Of course, we couldn’t write a mattress comparison without looking at the differences between two beds. Here’s how the Allswell and Casper differ:

  • Casper is more expensive
  • Casper is 11″ tall, and Allswell is 10″ tall.
  • Allswell is a bit firmer.
  • Casper has more of a balanced foam feel
  • Casper’s top layer is more responsive than that of Allswell.

Read our full Casper mattress review.

Firmness and Feel Differences

Firmness and feel is an especially important element. Let’s see who the Allswell and Casper mattresses will be a good fit for.

How Firm Are The Allswell And Casper Mattresses?

The Allswell mattress feels like a 7.5/10 on our firmness scale. For reference, a 6.5/10 is considered medium firm. This mattress has a thin comfort layer made of foam and a thick layer of coils underneath. Sleepers should feel some decent pressure relief on this mattress, but it’s still very supportive.

The Casper mattress is slightly softer than the Allswell, coming in at 7/10. It has a zoned support system, so it will feel firmer or softer depending on your sleeping position.

Sleeping On the Allswell And Casper Mattresses

The Allswell mattress is a great pick for back sleepers. The strong coils and soft comfort layer gives a good balance of comfort and support. But because the top layer is a bit thin, it’s not the best pick for most side sleepers. Many people may feel excess pressure along their shoulders and hips in this sleeping position. The Allswell mattress is on the firmer side, so it’s an excellent choice for back sleepers. In this sleeping position, people should notice their backs staying in the proper alignment.

Allswell Back Sleeping

The Casper is also a fantastic choice for back sleepers. The zoned support system really helps the lumbar area. So much so, in fact, it was named one of the best mattresses for back pain and sciatica. The Casper is also a great pick for side sleepers. The extra cushioning near the shoulder area really helps alleviate pressure. Most stomach sleepers will find the Casper is a decent choice. Many people may notice their hips sinking into the layers a bit, but it still creates a good amount of support.

A man sleeps on his side.

What Do The Allswell And Casper Mattresses Feel Like?

Even though there is foam in the Allswell’s top layer, it still has more of an innerspring feel. This bad has a good amount of bounce and responsiveness. Sleepers won’t feel “stuck” inside this mattress, and it’s easy to move around on.

The Casper has a balanced foam feel. Though there is a slight bounce, it also allows sleepers to sink into the layers quite a bit. But even so, most people shouldn’t have issues moving around on top of this mattress.

Average Weight Sleepers – 130lbs – 230lbs

Average weight back sleepers should find the Allswell to be a great choice. Though the support layer is firm, the soft comfort layer provides ample pressure relief along the lower back. Side sleepers, however, may feel a bit of strain along their shoulders and hips. The Allswell’s thin comfort layer may not provide enough cushioning for pressure points.

For average weight stomach sleepers, the Allswell is a great pick. Because this mattress is on the firmer side, it will help stomach sleepers keep their body in the proper alignment throughout the night.

Casper is one of the best mattresses for combination sleepers, so average weight back sleepers will find it’s a great pick. The foam layers provide plenty of comfort and tons of support. Side sleepers, too, should notice plenty of pressure relief on the Casper.

Most average weight stomach sleepers should also find the Casper is a great choice. Even though it has pressure-relieving foam on top, the mattress is still supportive enough to keep the body in the proper alignment.

Heavyweight Sleepers – Over 230lbs

Heavyweight back sleepers should feel a good balance of comfort and support on the Allswell mattress. The coils at the bottom will support the lower back, while the top layer creates plenty of comfort.

However, heavyweight side sleepers may not feel as much pressure relief on the Allswell mattress. People in this category may sink deeply into the thin comfort layers and feel more of the support layer underneath. Because of this, the Allswell mattress may feel too firm for heavier people. But because the Allswell is firm, it’s a great pick for heavier stomach sleepers. People who prefer this sleeping position should feel supported all night long.

Many heavyweight back sleepers will feel comfortable and supported on the Casper mattress. The zoned support system should give an extra boost along the lower back area. However, those who weigh more than 275lbs may find this mattress isn’t supportive enough.

Heavier side sleepers may find the Casper feels too firm. Because of this, people in this category may experience shoulder and hip pain. Heavyweight stomach sleepers, though, may find the Casper feels too soft. Generally, stomach sleepers need a firm sleeping surface in order to keep the body in alignment.

Lightweight Sleepers – Under 130lbs

Lightweight back sleepers should also love the Allswell mattress. In this sleeping position, this bed offers a great deal of comfort and support. Lighter side sleepers, however, may still notice some strain along pressure points. For lightweight stomach sleepers, the Allswell is a great pick. This mattress is supportive enough to prevent lower back pain.

On the Casper, lightweight sleepers should feel comfortable in all three sleeping positions. This mattress provides excellent comfort and support while back, side, and stomach sleeping. For this reason, it’s one of the best mattresses for lightweight sleepers.

Mattress Construction Differences

Now, let’s see what the Allswell and Casper mattresses are made out of. Here’s a deep dive into their construction:


The Allswell mattress has a quilted cover with foam inside.

The Casper has a soft and thin cover, and it doesn’t really get in the way of the overall feel of the mattress.

Comfort Layers

The Allswell’s comfort layer is comprised of open-celled memory foam, which aids in pressure relief and body contouring. Inside the foam is charcoal and copper-infused gel. These materials are meant to help dissipate heat and keep sleepers feeling cool.

Allswell Mattress Construction

In Casper’s comfort layer, there’s a proprietary foam called AirScape. This material feels both soft and responsive. It’s also open-celled, which means it is less likely to trap heat. Underneath this layer sits Casper’s zoned support system. This gives the mattress different firmness levels — it’s firmer toward the center and firmer near the head and foot. Because of this, the Casper is one of the best mattresses for fibromyalgia.

Casper Mattress Construction and Foam Layers

Support Layer

In the support layer, Allswell has individually-wrapped coils. These sturdy materials make the mattress very supportive and give it a traditional innerspring feel.

Casper’s base layer is made out of supportive base foam.

Mattress Height

The Allswell is 10″ tall.

The Casper is 11″ tall.

Allswell And Casper Mattress Size Options and Price

Curious about the size options and price points? Take a look at our handy charts below!


Size Dimensions Price
Twin 38.5 ” x 74.5″ x 10″ $265
Twin XL 38.5″ x 79.5″ x 10″ $295
Full 54″ x 74.5″ x 10″ $345
Queen 60” x 79.5” x 10” $375
King 75.5” x 79.5” x 10” $465
California King 72” x 84” x 10” $465


Size Dimensions Price
Twin 38″ x 75″ x 11″ $595
Twin XL 38″ x 80″ x 11″ $695
Full 53″ x 75″ x 11″ $995
Queen 60″ x 80″ x 11″ $1095
King 76″ x 80″ x 11″ $1295
California King 72″ x 84″ x 11″ $1295
  • Click the button for the best deal on Allswell
  • Good for stomach sleepers 
  • Has more of a memory foam feel on top

Doesn't expire

Save $100
  • Use the code "MATTRESSCLARITY" to save $100 on your order!
  • A good match for side sleepers 
  • Has a balanced foam feel

Doesn't expire

Allswell And Casper Performance Differences

How well do the Allswell and Casper mattresses perform? Let’s take a look at their cooling features, edge support, motion transfer, and more!

Sleeping Hot or Cold

The Allswell is made with copper and charcoal-infused memory foam, which is designed to dissipate heat. In addition to this, the Allswell has an innerspring support layer that promotes airflow. Overall, the Allswell does a good job at keeping sleepers cool at night. Take a look at the best cooling mattresses for even more great options.

Even though it’s an all-foam mattress, the Casper Original has great cooling features. Most notably, it has AirScape foam. This material is open-celled to promote airflow and breathability.

Motion Transfer

Motion transfer is especially important if you share a bed with a partner. If you’re relaxing one side of the bed, will you feel your partner’s movements when they shift sleeping positions?

The Allswell doesn’t have the best motion isolation. Because the top memory foam layer is quite thin, you may feel your partner shift around during the night.

The Casper is great at isolating motion. Its foam layers help prevent movement from traveling too far. This is one reason why we think it’s one of the best mattresses for couples.

Edge Support

Edge support is another important aspect to consider if you sleep with a partner. If a bed has poor edge support, you may feel like you could roll off the mattress. That means you can’t utilize the entire bed!

Thanks to its sturdy support layer, the Allswell has great edge support. When lying near the side, I feel very secure. I could even bend down to tie my shoes without feeling like I would roll off.

Allswell Mattress Edge Support

The Casper also performs well with edge support. When sitting and lying near the edge, we notice a bit of a collapse, but it’s still quite secure.

Casper Mattress - Edge Support


Due to its high-quality innersprings, we expect the Allswell mattress to last 7-10 years.

The Casper mattress should also last about 7-10 years.


Before sleeping on a new bed-in-a-box mattress, you usually have to let it off-gas and expand. This is the case with the Allswell and Casper mattresses. You may notice a slight chemical smell at first, but it completely fades away after two days.


Both mattresses are very quiet. It’s possible the Allswell’s coils could squeak with time, but we do not anticipate this becoming a major issue.


Usually, couples looking for one of the best mattresses for sex want something that’s bouncy and easy to move around on.

The Allswell has responsive innersprings, so it’s very easy to shift positions on this bed. The Casper is made entirely out of foam, but it still has a slightly responsive feel. Because of this, we think both mattresses are good options for sex.

Company Policies

Before investing in a new mattress, it’s always a good idea to read the company’s fine print. Read on to learn more about Allswell and Casper’s warranty information, sleep trial period, and return policy.

Warranty Info

The Allswell is backed by a limited 10-year warranty.

The Casper also has a 10-year warranty.

Sleep Trial

The Allswell has a 100-night sleep trial period.

With the Casper, customers can try the mattress for 100 nights risk-free.

Return Policy

Both companies offer generous return policies. If you find you aren’t happy with your Casper or Allswell mattress during the trial period, you can return it for a full refund.


Still curious about the Allswell and Casper mattresses? Take a look at the most frequently asked questions below!

Which mattress is better, Allswell or Casper?

Both brands are high-quality and comfortable, but they are better choices for some people more than others. The Allswell is a great pick for stomach sleepers, while the Casper is better for side sleepers.

Can you flip an Allswell or Casper mattress?

No, the Allswell and Casper mattresses are not flippable. They are designed with support layers on the bottom and comfort layers on top, so flipping them just wouldn’t work.

How long will the Allswell and Casper mattresses last?

Allswell and Casper mattresses should last 7-10 years.

Gravatar for Joe Auer

Joe Auer

Joe Auer is the editor of Mattress Clarity. He mainly focuses on mattress reviews and oversees the content across the site.

He likes things simple and take a straightforward, objective approach to his reviews. Joe has personally tested nearly 250 mattresses and always recommends people do their research before buying a new bed. He has been testing mattresses for over 5 years now, so he knows a thing or two when it comes to mattress selection. He has been cited as an authority in the industry by a number of large publications.

Joe has an undergraduate degree from Wake Forest University and an MBA from Columbia University.