Why We Chose the Helix Midnight Luxe as the Best Mattress for Side Sleepers in 2026

After putting the Helix Midnight Luxe through the rounds in our Test Lab, we dubbed this hybrid bed as our choice for the best mattress for side sleepers in 2026. With its foam-and-coil design and medium firm (6) feel, we found that it provides excellent cushioning at the hips and shoulders and relieves tension without letting the midsection sink too much. 

The Helix Midnight Luxe features multiple layers of high-end memory foam that contours to the body and promotes spinal alignment when lying on your side. Sturdy coils provide support from edge to edge, and we even noted that it does an excellent job at isolating motion on the mattress surface and uses breathable materials that resist overheating.

About the Helix Midnight Luxe

The Helix Midnight Luxe is a 13.75-inch hybrid mattress constructed with thoughtfully layered materials to optimize all-around performance. For side sleepers, this translates to a mattress that strikes a balance of cushioning and support. 

The Midnight Luxe contains top layers that are made with high-quality memory foam. This material contours to the body, providing proportional support to areas at risk of pressure buildup, like the shoulders and hips of side sleepers.

The memory foam is complemented by the third transitional layer, which is reinforced polyfoam to provide more stability under the hips and shoulders. If you need more hip and lower back support, you can also add an optional ErgoAlign layer into this section of the mattress. 

Under the comfort system is the support core, which is made with thick metal coils that are individually wrapped in fabric to enable more flexible movement and adaptable support. These durable coils act as a base that boosts edge support and keeps you from sinking too deeply into the bed.

The mattress has a firmness level of medium firm (6) that works well for most sleepers but received the highest ratings from our testing pool of side sleepers under 230 pounds. (Overall, though, side and most back sleepers loved the Helix Midnight Luxe.) 

Also in testing, couples appreciated the motion isolation provided by the memory foam layers. We found that our testers could barely feel any movement across the surface. In terms of temperature regulation, the coil cores of this bed worked well to keep things cool, so we’d also recommend it as a good option for sleepers who run warm. For an additional charge, Helix will also include graphite ribbons intended to further regulate temperature. 

Helix offers free shipping to addresses in the contiguous U.S., and every mattress comes with a generous lifetime limited warranty and a lengthy 120-night sleep trial.

How We Determine Our Mattress Rankings

Our Performance Criteria

Our mattress testing methodology focuses on performance ratings in several key categories that affect nightly sleep. 

Motion Isolation

• What it is: Motion isolation is a mattress’ ability to keep vibrations from movement contained to just one side of the bed.
• How we test it: A vibrometer is a tool specially designed to measure vibrations. We create a controlled amount of movement on one part of the bed and then measure vibrations on the other side. We also get subjective input from our testing team.
• Why it matters: You shouldn’t lose sleep just because you share a bed with a partner (or pet). A mattress with good motion isolation allows you to stay asleep even if your bed partner moves around, or if a child or pet climbs into bed.

Temperature Control

• What it is: Temperature control and temperature regulation are terms we use interchangeably to describe how effectively a mattress can maintain a neutral temperature.
• How we test it: To evaluate temperature control, we use a heat gun thermometer to measure the surface temperature. We heat the mattress up to a specific number, and then we see how long it takes for the mattress to get back to its original temperature. The faster the mattress cools off, the better its temperature control.
• Why it matters: Overheating can cause you to wake up at night, and some people are more susceptible to sleeping hot. Even if you don’t wake up, altered body temperature may impact the quality of your sleep. 

Pressure Relief

• What it is: Pressure relief describes how well a mattress cushions different parts of the body, preventing pressure buildup around heavier or sensitive areas, such as the hips, shoulders, and lower back.
• How we test it: In our sleep lab, we have a pad with sensors that track pressure buildup. We put that pad on top of a mattress and then have our team members lie down on it. A computer-generated image shows any areas of excess pressure buildup.
• Why it matters: Without enough pressure relief, a mattress may feel uncomfortable or even prevent you from falling asleep. Unsupported pressure points can also throw off spinal alignment, which may lead to aches and pains.

Durability

• What it is: Durability is how long a mattress lasts and maintains its performance with regular use. 
• How we test it: Lab-based tests of durability are challenging because they fail to replicate the real-world stress and strain on a mattress. For that reason, we look carefully at the quality of the materials in every layer of a mattress, and we gather feedback from field testers who have used a mattress over an extended period of time.
• Why it matters: A durable mattress provides a greater return on investment because you can use it for longer without needing a replacement. If a mattress wears out quickly, it can fail to be supportive or comfortable.

Ease of Movement

• What it is: Ease of movement refers to whether you can adjust your body’s position on a mattress without feeling stuck.
• How we test it: A main test for ease of movement is placing a kettlebell on the mattress surface and then measuring how quickly the mattress snaps back when the kettlebell is removed.
• Why it matters: Not everyone prioritizes ease of movement. But for people who frequently adjust their sleeping position, it’s important not to feel trapped in place. Ease of movement can also have an impact on intimate activities in bed.

Edge Support

• What it is: Edge support describes how well the perimeter of the mattress retains its structural integrity.
• How we test it: We test edge support with weights and with people. Using a specific weight, we measure how much the edge sinks. We also have our testers sit or lie near the edge and rate how dependable it feels.
• Why it matters: Edge-to-edge stability enables you to use your entire mattress surface. Strong edge support makes it easier to get in and out of bed, which can be especially important for people with injuries or mobility limitations.

As part of our testing process, we also get feedback and thoughts from people of different body weights and sleeping positions. This is essential because these factors can change how well a mattress works for any specific person. 

Helix Midnight Luxe

Sleeper Type

Under 130 lbs

130-230 lbs

Above 230 lbs

Side Sleepers

9.5/10

10/10

9.5/10

Back Sleepers

8.5/10

8/10

7/10

Stomach Sleepers

8.5/10

7.5/10

6.5/10

Our Selection Process

To choose our best mattress for side sleepers, we started by selecting a top 100 list using our extensive mattress database (which contains over 2,000 distinct models). To create this top 100 list, we filtered out any mattresses with an overall rating under 8, or poor scores for pressure relief or other performance categories most important to side sleepers.

The next step was to narrow the top 100 down to a list of 25. We re-ran analyses in our Test Lab and gathered data from our field testers who have spent months using different mattresses in their homes. The field testing data adds insight into how mattresses work for sleepers of different weights and sleep positions. We also considered factors like cost, materials, and brand reputation.

With all this information, our testing team chose a short list of top performers. Although there was quite a bit of discussion about which mattress should come out on top, after taking all of the data and testing into account, a clear consensus formed around the Helix Midnight Luxe as the best option for side sleepers.

Why the Helix Midnight Luxe Won

The Helix Midnight Luxe is our choice for the best mattress for side sleepers because of its solid, all-around performance and its exceptional pressure relief. In testing, side sleepers loved its ability to conform around hot spots like the hips and shoulders. The Midnight Luxe felt comfortable and inviting, and it helped side sleepers maintain a healthy spinal alignment.

High-quality layers of memory foam, zoned polyfoam, and pocketed coils enable the Helix Midnight Luxe to provide a blend of cushioning and sturdiness. The construction of the mattress also allows it to limit heat buildup and isolate motion, making the Midnight Luxe even more suitable for side sleepers who tend to sleep hot or share their mattress with a partner.

We also liked how the medium firm (6) feel of the Midnight Luxe worked for the majority of sleepers in our testing. That said, even though the Midnight Luxe has wide appeal, some sleepers may prefer a mattress that’s firmer or bouncier.

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