Beautyrest Black Hybrid CX-Class Plush Mattress Review

Updated June 18, 2024

Beautyrest Black Hybrid CX Class Plush mattress in a bedroom with matching side tables and lamps against a gray wall

The Beautyrest Black CX-Class Plush is one of the CX Class models in Simmons' Beautyrest Black collection.  Its back support and pressure-relieving capabilities make it ideal for back sleepers and it's one of the softer feeling beds made by Simmons. If you're researching this model prior to purchasing please read our expert review here:

Comfort Scale Rating

Expected to rate a 6 on our 10 point Comfort Scale (a 1 is hard, 10 is softest.) the Beautyrest Black CX Class Plush mattress is a medium-plush comfort.  This level of comfort will appeal to most people as it's neither too firm nor too soft.  However, if you really like a very firm or a very soft feeling mattress then you could look into one of the other CX Class mattresses with comfort (medium) more suited to your preferences.

Expert Video Review

Here’s our quick CX-Class Plush Mattress Video Review. It highlights the features, benefits, and our impression.


Pros & Cons

  • Medium comfort appeals to most people
  • Hybrid construction is the latest innovation in bedding 
  • Two layers of AirCool Memory Foam 
  • Beautyrest Black exclusive T3 Pocketed Coil System 
  • Comfort might not appeal if you prefer a very firm or very soft feeling bed 
  • Not recommended for larger-sized people who sleep on their sides
  • No twin size

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Pressure Test Results

The CX-Class Plush mattress was tested with petite, average, and large body size people on their side and back sleeping positions to see what kind of support and comfort you can expect. (Learn how we test.) 

This mattress performed decently well picking up four out of six 'recommended' scores with only one 'not recommended' score. The pressure relief and back support you get from the bed seems to work best if you're a back sleeper, though it does do a pretty good job for most side sleepers.  The red areas you see in the shoulder and hip region of the larger-sized body on the side sleeper indicate a significant increase in pressure, so much that this bed would likely cause discomfort for that person.  Yellow colorations in the images show where there's a build-up of pressure, more than what is considered normal.  The green and light blue areas are the best ones to see because they represent good pressure relief and the proper amount of support needed for quality sleep.

You should always consider how good a bed's back support is when shopping for a new mattress because a properly supported back will align your spine and distribute your weight on the bed for maximum comfort.  Improper back support tweaks your back out of alignment and spinal alignment is crucial to getting quality sleep.  Your body needs to have pressure relief so that you don't get that numb sensation in your limbs that lead to tossing and turning for a fitful night's sleep.  This bed performed really well for back sleepers, but only ok for side sleepers. 

The pressure test results for this mattress are not yet available but it will be available soon.  Below is just an example.

LARGE PEOPLELargest 10% of adults 210-273 lbs Large back sleeper heatmapAvg Pressure:   mmHg - Area:   inches2 Large side sleeper heatmapAvg Pressure:   mmHg - Area:   inches2
AVERAGE PEOPLEMiddle 50% of adults 134-218 lbs Average back sleeper heatmapAvg Pressure:   mmHg - Area:   inches2 Average side sleeper heatmapAvg Pressure:   mmHg - Area:   inches2
PETITE PEOPLESmallest 10% of adults 111-135 lbs Petite back sleeper heatmapAvg Pressure:   mmHg - Area:   inches2 Petite side sleeper heatmapAvg Pressure:   mmHg - Area:   inches2

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The Main Beautyrest Black Hybrid CX-Class Plush Features in Detail

cx plush features

1. Antimicrobial Mattress Protection

Keeps mattress fresh and clean from odor causing bacteria.

2. BlackICE 4.0 with Plant-Based Cooling Technology

Cooling materials just beneath the surface enhance heat dissipation that help provide up to 18% more cooling power to keep you comfortable while you sleep.

3. AirCool Memory Foam

This proprietary memory foam conforms to your body, provides pressure point relief, and freedom of movement.

4. Self Response Latex 

Arguably the best comfort foam in mattresses, latex provides superior pressure relief for less tossing and turning while pushing back against the body for a more supportive feel. Anti-microbial and anti-dustmite properties contribute to a healthier sleep environment.

5. Alpaca, Cashmere and Silk Comfort Layer

This layer is 100% natural and will help wick away moisture and enhance the cooling features within the mattress.

6. T3 Pocketed Coil Technology

Exclusive to Beautyrest Black, this coil works to provide individualized back support, ease of movement, and pressure point relief throughout the night.

7. Energy Foam

This durable foam utilized below the coil unit helps create a supportive, durable foundation for the no-flip mattress design.


The CX-Class Plush mattress has a 10-year warranty against factory defects.

Beautyrest Black X-Class FAQs

  1. Do I need to flip my Beautyrest Black X-Class mattress?

    No, Beautyrest Black X-Class beds are built from the ground up and are not designed to be flipped. This has become the new standard for mattresses today. It often means more comfort materials can be packed in.

  2. How is this X-Class mattress constructed?

    The Hybrid X-Class Collection has a traditional innerspring, the Zoned T3 Pocketed Coil, combined with multiple layers of memory foams which is what makes these beds a hybrid.

  3. Can I finance my Beautyrest Black X-Class mattress?

    Yes! You can finance a Beautyrest Black X-Class mattress on US-Mattress with Synchrony HOME, Affirm, or Paypal.


The Black Hybrid CX Class Plush mattress is a medium-plush bed by Simmons.  It's a great comfort type for most people and is a good compromise if you and your sleep partner prefer different comfort levels in your mattress. It performed exceptionally well during pressure testing for back sleepers, earning a 'recommended' score for all body sizes.  It also picked up a 'recommended' score for petite people who sleep on their sides as well.  

Simmons' Zoned T3 Pocketed Coil System, which is exclusive to the Beautyrest Black models, is an amazing innovation in sleep technology as it supports you with greater resiliency than regular coils.  All of the Beautyrest Black models also have the BlackICE cooling material which helps regulate the temperature in the mattress for a cooler night's sleep.  This model's unique feature is a 2.5" of AirCool Memory Foam which cradles your body excellently and gives you conforming support.

The Beautyrest Black Hybrid CX Class Plush mattress is a phenomenal value for the cost as this bed is packed with premium materials and features that are difficult, if not impossible, to find in a comparable mattress.  If you think that a different comfort type might be a better option is one other CX Class model (medium). 

This comfort is one of the most popular because of its plush feel and supportive structure for proper spinal alignment.  If you don't mind paying the price for a premium quality mattress and you like sleeping on a plush bed, particularly if you're a back sleeper, then this mattress is one of the best bedding options available.

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Beautyrest Black CX-Class Plush Specifications:

Product Name
Beautyrest Black Hybrid CX-Class Plush Mattress
Mattress Comfort
Comfort Scale Number
Coil Count
Coil Gauge
Comfort Padding Layers
  • 10-year warranty against manufacturer's defects

  • No Flip, No Rotate

  • Non-prorated

Back Support System
Quilt Top of Mattress
Edge Support
Recommended For Side Sleepers Who Weigh
  • Coming Soon!

Recommended For Back Sleepers Who Weigh
  • Coming Soon!

About the Author Steven Bieber

Features Steven, a white man with glasses, smiling

Steven is a content writer who recently broke into the mattress industry. In his free time, he enjoys watching football and listening to music.