Casper One vs. Helix Midnight Mattress Comparison

Overall Rating

8.2

Casper One

Bottom Line

One of the most iconic mattress-in-a-box models, the Casper is an affordable all-foam bed with a medium-firm feel.

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Full Mattress Review

VS

Overall Rating

9.1

Helix Midnight

Bottom Line

A wallet-friendly hybrid designed with side sleepers in mind.

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27% off sitewide + 2 free Dream Pillows with a mattress purchase. Code: SF27

Full Mattress Review

Casper and Helix have their branding nailed – these two retailers specialize in making mattresses for different types of sleepers and pointing the right models to the right customers. Helix uses a quiz to help customers pinpoint their perfect bed, while Casper lets you compare models on their site. 

We’re taking a close look at the Casper One and Helix Midnight mattresses. The all-foam Casper One is the company’s newly reimagined flagship mattress that features updated materials and design features. The Helix Midnight is a hybrid designed specifically for side sleepers. Both models have a medium firm feel that’s a 6 out 10 on our firmness scale.

We’ll explain how they compare to one another, looking at factors like sleep lab performance and real-world sleep testing. We’ll also explore prices and company policies to determine if these are worthwhile purchases and whether they’re a good value.

Our Testing Team’s Take

It’s important to us that we use objective and measurable tests when we compare mattresses to one another, which is why we try every bed we review in our Seattle Test Lab. During hands-on tests, we follow a comprehensive methodology that measures critical factors like pressure relief, temperature regulation, and motion isolation. 

We also understand that real peoples’ experiences matter too. Our testing team consists of side, back, and stomach sleepers of varying body types who try each bed. After sleeping on a mattress, our testers assign them a score that indicates how supportive and comfortable a mattress felt for their weight and sleeping position. We use their experiences to calculate performance ratings and determine the best mattresses.

Our Verdict

Helix and Casper have proven they’re more than just good marketers – the Casper One and Helix Midnight are well-made mattresses that use higher-quality materials than what you’d expect from beds with approachable price-points. Both are high value options, but best suited to different types of sleepers. The Casper One is an all-foam mattress and the Helix Midnight is a hybrid, which is an important distinction to keep in mind when picking between the two.

Logan Foley

Editorial Director

Side sleeper

140 lbs.

Too many dogs in the bed

“One of the things that stood out the most to me was how well the Casper One absorbed motion. I liked that I wasn’t bothered by movement on the other side of the bed. I also felt that the mattress had a good mix of pressure relief and pushback.”

Helix has certainly nailed down the Midnight for its target demographic– all of the side sleepers on our team gave the mattress high scores. Its plush comfort system cushions your hips and shoulders without compressing so much that you feel like you’re being swallowed by the mattress. The Casper One lacks some of the Helix’s plushness, but that’s a feature – not a bug – for people who prefer a more even sleep surface. It sleeps cooler than the Helix and is a better fit for those seeking a balance between cushioning and spinal support.

Brad Nehring

Senior Product Analyst

Side sleeper

215 lbs.

Sleeps with a weighted blanket

“The phrase “something for everyone” gets thrown around a lot, but with Helix this is truly the case. You can choose from a wide range of hybrids ranging from affordable to high-end, and each one is designed for certain sleepers based on their weight and preferred position. As a side sleeper, I personally prefer the Midnight and Dawn — take the Helix Sleep Quiz to figure out your best match.”

Construction and Materials

While the all-foam Casper One and hybrid Helix Midnight share some materials, their overall constructions are distinct from one another.

Casper One Breakdown

The Casper One has a basic but thoughtful design that uses its three types of foam wisely. It starts with a polyfoam comfort layer made from the company’s patented Breathe Flex foam. Just as it sounds, this foam is designed to adapt to your body while allowing air to flow freely throughout its cells. 

Underneath, there’s a memory foam transitional layer that provides even spinal support while reducing pressure beneath your hips and shoulders. The high-density polyfoam support core provides good overall stability and strong pushback that maintains the integrity of both the mattress and your posture. 

The cover features a soft blend of polyester, polyethylene, and Lycra. Together, these layers create a memory foam mattress that’s 11 inches tall with a medium firm (6) feel. The Casper One is a mattress-in-a-box model that ships sealed and compressed.

Helix Midnight Breakdown

The Helix Midnight is a hybrid mattress with foam layers over pocketed coils. The comfort system has two layers. The topmost layer consists of memory foam that hugs your body to help reduce pressure points. The second is made from polyfoam. Together, these layers offer ample cushioning and a plush feel. 

The transitional layer is also made from polyfoam. It maintains a separation between the comfort layers and coils so that you don’t sink too deeply into the mattress. The pocketed coil support core has thicker metal coils along the perimeter to bolster the edges to make getting in and out of bed easier. The coils are individually wrapped, so they compress separately from one another instead of moving as one unit. This feature can help cut down on motion transfer. 

There’s a thin polyfoam layer at the base that anchors the other layers and helps increase overall stability. The standard cover is made from knit polyester, but you can upgrade to Helix’s GlacioTex cooling fabric cover for an added charge. The Helix Midnight has a medium firm (6) feel and stands 12 inches tall.

Mattress Sizing and Weight

The Casper One and Helix Midnight have average heights, with the Helix standing about an inch taller. Both mattresses should work easily with standard fitted sheets. The Casper One is significantly lighter than the Helix, which isn’t a surprise considering the Helix’s metal coil support core. Make sure to get a partner’s help when lifting either mattress. 

These beds both come in twin, twin XL, full, queen, king, and California king size options. The Casper is also available in split king, while you can buy the Helix as a short queen or RV king.

Performance Ratings

Hybrid and all-foam mattresses typically have different pros and cons from one another, and this is the case for  the Casper One and Helix Midnight. However, they do have a few characteristics in common. Thanks to their thick foam comfort layers, both beds are excellent at relieving pressure points and isolating motion. The Casper has a slightly less responsive sleep surface than the Helix, but they’re comparable. 

They also share one major drawback – a lack of edge support. The Helix has a reinforced perimeter, but neither bed offers enough support at the edges to totally prevent you from rolling towards the middle. It’s tough to move around on both beds because their foam layers are restrictive, though some people prefer this feeling of sleeping “in” – rather than “on” – their bed.

The most notable difference between the two beds is their temperature regulation. While hybrids are often cooler than foam beds, we found the opposite to be true with these two. The Casper One, while not a top contender for the best cooling mattress, holds its own and regulates temperature better than the Helix Midnight does. If you sleep hot and would prefer the Midnight, consider adding the cooling cover. 

We found both beds to be pretty well-rounded and supportive for most groups on our testing team. The Casper One was a standout for back sleepers under 130 pounds and side sleepers between 130 and 230 pounds, while the Midnight was excellent for side sleepers across the board as well as back sleepers between 130 and 230 pounds. Stomach sleepers had the hardest time on these beds, as their surfaces are a bit too compressive to keep them from feeling like they’re sinking.

Full Reviews: Other Casper and Helix Models

Casper One

Overall Rating:

8.2 /10

Price Range:

$599 – $1,198

Mattress Type:

Foam

Firmness Options:

Medium Firm (6)

Casper Dream Hybrid

Overall Rating:

6.7 /10

Price Range:

$1,195 – $2,390

Mattress Type:

Hybrid

Firmness Options:

Medium (5)

Casper Snow Hybrid

Overall Rating:

8.5 /10

Price Range:

$1,310 – $2,620

Mattress Type:

Hybrid

Firmness Options:

Medium (5)

Helix Midnight

Overall Rating:

9.1 /10

Price Range:

$749 – $1,399

Mattress Type:

Hybrid

Firmness Options:

Medium Firm (6)

Helix Dawn

Overall Rating:

8.6 /10

Price Range:

$749 – $1,399

Mattress Type:

Hybrid

Firmness Options:

Firm (8)

Helix Midnight Luxe

Overall Rating:

9.7 /10

Price Range:

$1,099 – $2,299

Mattress Type:

Hybrid

Firmness Options:

Medium Firm (6)

Mattress Pricing

Hybrid mattresses usually cost more than all-foam mattresses because they are more labor-intensive to manufacture and often have a wider blend of materials. The average hybrid mattress costs between $1,000 and $3,000, while the average all-foam model ranges from $700 to $1,200. The Casper One and Helix Midnight fall at the more affordable end of their respective ranges. So while the Helix Midnight will run you a few hundred more dollars than the Casper One, it’s still well within what we think is a good value. 

Casper and Helix offer nearly identical policies, including mid-length sleep trials and warranties. Keep in mind that extras like White Glove delivery service and Helix’s optional cooling pillow-top can increase your bed’s overall cost.

What Customers Are Saying

The Casper One gets high marks from combination sleepers, who report that its medium firm surface offers strong spinal support. Many say that it has a balanced feel that works well for a variety of sleeper types and body weights. Owners also remark that it sleeps cool and has a breathable cover. Some think it feels firmer than advertised and, at the same time, that the edges don’t have enough support. 

People who own the Helix Midnight remark that it feels plush and comfortable, especially when side sleeping. Couples also state that its pocketed coils do a good job of minimizing motion transfer and that they can shift positions without waking their partner. There are reviewers who think it feels softer than its advertised firmness level and worry about the memory foam compressing over time. When you choose a mattress, your body weight and sleeping position should factor heavily into your decision.

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