Helix Vs Casper Mattress Comparison

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Helix and Casper are two of the most popular online mattress brandsso if you’re looking for a bed-in-a-box, chances are these names have come up. Both brands offer high-quality mattresses suited to a variety of sleepers, so how do you choose between them?

You can start by reading our in-depth comparison! Here, we’ll review the hybrid Helix Midnight (the brand’s most popular model) alongside the original, all-foam Casper mattress. We’ll cover everything you need to know, from firmness and feel to construction and performance. By the end of this review, you should know for certain whether the Helix Midnight or the Casper is right for you. So let’s dive in!

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  • A great match for hot sleepers
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Helix And Casper Mattress Overview

The Helix Midnight and the original Casper are both popular online mattresses, but they’re better suited to different types of sleepers. Here’s a quick look at who might prefer the Helix Midnight and who’s more likely to want the Casper.

Who Should Get The Helix?

  • Hot sleepers who need a mattress that sleeps cool
  • Heavier people, who need an extra-supportive mattress
  • Folks who want a mattress with a slow-moving feel on top

Learn more about this mattress in our comprehensive Helix Midnight review.

Who Should Get The Casper?

  • Back sleepers who need more lumbar support
  • Folks who like a more responsive feel on top

Catch all the details about the Casper in our in-depth Casper mattress review.

Helix Vs Casper Mattress Video Comparison

Get up-close-and-personal with the Helix Midnight and Casper mattresses in our in-depth video review! Our reviewer, Marten, will assess each bed’s construction and share his experiences with sleeping in all positions on each mattress.


Similarities Between The Helix And Casper?

Even though these mattresses are made by different brands, they have quite a few things in common.

  • They both come from popular mattress companies
  • Both mattresses come with great customer service terms
  • They both feature memory foam in their construction
  • They’re approximately the same firmness
  • Both of them have a fairly balanced foam feel

Helix Midnight Mattress Review

Key Differences Between The Helix And Casper?

While the Helix Midnight and the Casper have several similarities, they differ from each other in a few notable ways.

  • The Helix Midnight has coils, while the Casper does not
  • The Helix Midnight is more breathable than the Casper
  • The Casper features a zoned construction, while the Helix Midnight does not
  • At full price, the Helix Midnight is more affordable than the Casper

Casper Original Mattress Review

Firmness And Feel Differences (Including Firmness Rating)

When you’re trying to decide between two (or more) mattresses, two of the most important factors to consider are firmness and feel. These factors will tell you a lot about whether a particular mattress is well-suited to your personal sleep preferences, including your chosen sleep position(s). So let’s take a look at the firmness and feel on the Helix Midnight and the Casper!

How Firm Are The Helix And Casper Mattresses?

We ranked both the Helix Midnight and the Casper around a 7 out of 10 on the firmness scale. The industry standard for medium firmness is 6.5/10, so this suggests both mattresses are a touch firmer than medium-firm.

That said, firmness is a bit subjective. Heavier-weight folks might feel that both of these mattresses are firmer, while lighter-weight sleepers will probably find each mattress a bit softer.

Sleeping On the Helix And Casper Mattresses

We spent time with both mattresses and really got to try them out in all three sleeping positions. Read on to see exactly what our experience was like.

Helix Midnight

We felt great while back sleeping on the Helix Midnight. The combination of coils and memory foam offered a pleasant balance of spinal support and comfort.

Helix Midnight Mattress - Back Sleeping

We felt okay while side sleeping on the Helix Midnight, but it might feel a touch too firm for folks who spend all night in this position. One possible exception? Lighter-weight folks will probably feel more pressure relief while side sleeping on this mattress, because they’re less likely to press through the comfort layer into the firmer support layer underneath.

The Helix Midnight did not feel supportive enough for stomach sleeping. Folks who spend all night on their stomach will want to look for a more supportive mattress for stomach sleepers.


As with the Helix Midnight, we felt great while back sleeping on the Casper. Our hips sank in just a bit for some pressure relief, but not so far that they pulled the spine out of alignment. Meanwhile, the Zoned Support system offered great lumbar support.

We felt okay but not great while side sleeping on the Casper. As with the Helix Midnight, lighter-weight sleepers might experience more pressure relief in this position.

Casper Mattress - Side Sleeping

We felt relatively well supported while stomach sleeping on the Casper. However, strict stomach sleepers who spend all night in this position will likely prefer a firmer mattress.

What Do The Helix And Nectar Mattresses Feel Like?

The Helix Midnight has a balanced, somewhat slow-moving foam feel on top. Meanwhile, the coils in the support layer add bounciness and support.

The Casper has a balanced, more responsive foam feel on top. Even though it’s all-foam, it’s fairly bouncy and responsive.

Average Weight Sleepers – 130lbs – 230lbs

Average-weight back sleepers should enjoy a balance of spinal support and comfort on the Helix Midnight. Side sleepers in this weight category could find that the Helix Midnight can go either way: Some folks will find adequate pressure relief, while people who prefer a plusher feel will probably think the mattress feels too firm. The Helix Midnight is probably not supportive enough for average-weight stomach sleepers.

The Casper offers a blend of comfort and support (especially great lumbar support) to average-weight back sleepers. Much like the Helix Midnight, the Casper might suit some average-weight side sleepers but could feel too firm to others. Thanks to its Zoned Support system, which offers extra support near the middle of the mattress, the Casper is a better match for average-weight stomach sleepers.

Heavyweight Sleepers – Over 230lbs

Heavyweight back sleepers who weigh close to 230 pounds should enjoy a balance of comfort and support on the Helix Midnight. Folks who weigh much more than that will probably want a more supportive mattress overall, such as the Helix PLUS. The Helix Midnight will probably feel too firm for heavyweight side sleepers. At the same time, it’s probably not supportive enough for heavyweight stomach sleepers.

The Casper is much like the Helix Midnight in this category. Heavyweight back sleepers who weigh close to 230 pounds should enjoy a balance of pressure relief and spinal support, but folks who weigh more will probably want to look for a more supportive mattress for heavy people. The Casper will probably feel too firm for heavyweight side sleepers and not supportive enough for heavyweight stomach sleepers.

Lightweight Sleepers – Under 130lbs

The Helix Midnight should be a decent match for most lightweight sleepers. It gives lightweight back sleepers a blend of pressure relief and spinal support, offers decent pressure relief to lightweight side sleepers, and should be supportive enough for most lightweight stomach sleepers.

The Casper might be even better suited to lightweight sleepers of all stripes. It blends comfort and support for lightweight back sleepers, provides decent pressure relief to lightweight side sleepers (perhaps a touch better than the Helix Midnight), and offers adequate support to lightweight stomach sleepers thanks to its Zoned Support system.

Mattress Construction Differences

Now that you know what it feels like to sleep on top of the Helix Midnight and the Casper, let’s take a closer look beneath the surface. We’ll compare each mattress’s construction layer by layer and assess how their varied construction elements influence performance.


The Helix Midnight comes with a Soft Touch Design cover that’s stretchy, very breathable, and allows for airflow through the surface of the mattress.

The Casper features a thin, breathable cover that’s partially made from recycled bottles.

Comfort Layers

The Helix Midnight’s primary comfort layer is made of Memory Plus Foam, a proprietary blend from the Helix brand. This material has some of the slow-moving feel that memory foam is known for. Beneath the Memory Plus Foam layer, there’s a transition layer made of high-grade polyfoam. This layer adds some bounce to the top of the mattress and helps ensure that sleepers don’t feel stuck in the memory foam.

Helix Midnight Mattress - Construction

The Casper’s top comfort layer is made from the brand’s proprietary and breathable Airscape foam, which is perforated to allow for airflow. This layer is simultaneously plush and responsive. Beneath the Airscape foam is the Casper’s main distinguishing feature: its Zoned Support system. This layer consists of memory foam that is firmer near the head and foot of the mattress (for extra support while back and stomach sleeping) and softer near the head and foot (for pressure relief).

Casper Mattress - Construction And Foam Layers

Support Layer

The Helix Midnight’s support layer is made from individually-wrapped coils, which add bounce and support to the mattress overall. The individually wrapped construction also helps minimize motion transfer across the mattress. These coils rest on a layer of dense base foam.

The Casper’s support layer is comprised of a high-density base foam that adds support and structure to the whole mattress.

Mattress Height

The Helix Midnight is 12” tall, while the Casper is just a touch shorter at 11”.

Helix And Casper Mattress Size Options And Price

To see the most up-to-date size and pricing info for the Helix Midnight and Casper mattresses, check out the charts below!


Size Dimensions Price
Twin 38″ x 75″ x 12″ $700
Twin XL 38″ x 80″ x 12″ $800
Full 54″ x 75″ x 12″ $950
Queen 60″ x 80″ x 12″ $1099
King 76″ x 80″ x 12″ $1449
California King 72″ x 84″ x 12″ $1449


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

Make sure to read our other Helix mattress comparisons and Casper mattress comparisons like Helix vs Leesa and Casper vs Nectar.

Helix And Casper Performance Differences

Wowza, look at you go! You now have an understanding of the firmness, feel, and construction of both the Helix Midnight and Casper. To round out this review, let’s take a look at some other important performance indicators. We put both mattresses through a range of tests to assess their temperature regulation, edge support, motion transfer, and more. Let’s see how they stack up!

Sleeping Hot Or Cold

The Helix Midnight is the winner here. Its coils allow for plenty of airflow, even in the deepest layers of the mattress.

Motion Transfer

This is a close one, but the Helix Midnight ekes out a win. The memory foam in the top comfort layer does a great job of absorbing motion and minimizing movement across the surface of the mattress. This could make it a decent mattress for couples.

Edge Support

The Helix Midnight scores another win. Thanks largely to the coils in this bed’s support layer, we felt more secure while sitting and lying down near the edge.

Helix Midnight Mattress - Edge Support


This one is almost too close to call. Both the Helix Midnight and the Casper should be durable mattresses, and they both come with a 10-year warranty. It’s possible the Helix Midnight might last a touch longer thanks to the extra-durable coils.


We observed a bit of off-gassing from both the Helix Midnight and the Casper. This should dissipate within a few days.


At the time of writing this comparison, we didn’t observe any notable noise from either mattress. That said, it’s possible the Helix Midnight’s coils could start to squeak a bit over the long-term.


We called this one a tie! When folks hunt for a mattress for sex, they’re usually looking for a bed that makes it easy to change positions. Both the Helix Midnight and the Casper are responsive mattresses, so partners shouldn’t feel stuck in either bed.

Warranty Info

Both of these mattresses come with the same warranty terms. The Helix Midnight comes with a 100-night sleep trial and a 10-year warranty, and the same goes for the Casper.

Gravatar for Marten Carlson

Marten Carlson

Marten is Senior Editor at Mattress Clarity. He covers the mattress industry as well as sleep science news. He is specifically interested in the connection between sleep and overall health. Marten has written for media publications like Consequence of Sound and received a master’s degree in Film Studies from Emory University. He comes from Franklin, Indiana, and spends all the time he can writing, directing, and acting in films. He has directed genre short films and features. His newest film, Starlets, recently premiered at the River Town Film Festival in Clinton, NJ. He also stars in the upcoming thriller, Sour Bear. His next film, At The Hop, is a hot rod actioner with a horror twist.