Beautyrest Black Hybrid X-Class Firm Mattress Review

Updated January 24, 2022

Beautyrest Black Hybrid X-Class Firm Mattress

The Beautyrest Black Hybrid X-Class Firm is the firmest-feeling Beautyrest Black model of the four X Class mattresses by Simmons. If you're considering this model as your next bed, please continue reading our expert review for all the information you need to aid in your decision-making.

Comfort Scale Rating

The Black X Class Firm mattress is rated a 3 on our 10 point Comfort Scale (a 1 is hard, 10 is softest).  If your comfort preference is a firm-feeling bed then this model may be a good fit for you. However, if you prefer a softer feel, you might want to look at one of the softer X-Class models

Expert Video Review

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

Pros & Cons

PROS CONS
  • The X-Class Firm is highly recommended for back sleepers of all body sizes
  • The hybrid construction is a very popular mattress type, offering the benefits of both a coil system and memory foam
  • There are several layers of premium memory foams providing comfort and support
  • The T3 Pocketed Coil technology is an excellent coil system exclusive to Beautyrest Black
  • A mattress this firm will not appeal to those who like to sink into their bed 
  • The X-Class Firm is not recommended for heavier side sleepers
  • Expensive at $3,099 (Queen size)

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Pressure Test Results

The X-Class Firm 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 pressure relief you can expect. (Learn how we test.) 

This mattress tested very well, earning four out of six 'recommended' scores for its ability to relieve pressure on your joints and provide proper back support. Peak pressure point relief is what ensures that your limbs don't go numb. It means the mattress is doing a good job of dispersing your weight across the bed. Spinal alignment through proper back support is essential to a quality night's sleep as well because a back that is out of alignment causes pain, stiffness, and makes you very weary the following day. The X-Class Firm did a pretty good job of relieving pressure and providing proper back support for all body size/sleep position combinations.

The exception is heavier side sleepers. This was the only sleeper type that this bed earned a score of 'not recommended'. It's not very surprising, as firmer beds tend to cause more pressure the heavier the person is. This doesn't mean that you'll find the bed uncomfortable, just that it's not your ideal blend of support and comfort.

So that you can read these test results you'll need to know what each color shown represents. The red areas, as seen on the side sleeper with a larger-sized body, mean that there's a lot of pressure on that joint which will lead to tossing and turning for a very disturbed night's sleep.  The yellow areas show where there's an increase in pressure, though not so much that the bed would very uncomfortable.  The green areas show you where the pressure relief is good for that part of the body while light blue areas indicate appropriate back support. I hope this helps you in your decision-making process if you're tossing around the idea of purchasing this model.

BACK SLEEPER SIDE SLEEPER
LARGE PEOPLE Largest 10% of adults 210-273 lbs Large back sleeper heatmap Avg Pressure: mmHg - Area: inches2 Large side sleeper heatmap Avg Pressure: mmHg - Area: inches2
AVERAGE PEOPLE Middle 50% of adults 134-218 lbs Average back sleeper heatmap Avg Pressure: mmHg - Area: inches2 Average side sleeper heatmap Avg Pressure: mmHg - Area: inches2
PETITE PEOPLE Smallest 10% of adults 111-135 lbs Petite back sleeper heatmap Avg Pressure: mmHg - Area: inches2 Petite side sleeper heatmap Avg Pressure: mmHg - Area: inches2
BACK SLEEPER
LARGE PEOPLE Largest 10% of adults 210-273 lbs Large back sleeper heatmap Avg Pressure: mmHg - Area: inches2
AVERAGE PEOPLE Middle 50% of adults 134-218 lbs Average back sleeper heatmap Avg Pressure: mmHg - Area: inches2
PETITE PEOPLE Smallest 10% of adults 111-135 lbs Petite back sleeper heatmap Avg Pressure: mmHg - Area: inches2
SIDE SLEEPER
LARGE PEOPLE Largest 10% of adults 210-273 lbs Large side sleeper heatmap Avg Pressure: mmHg - Area: inches2
AVERAGE PEOPLE Middle 50% of adults 134-218 lbs Average side sleeper heatmap Avg Pressure: mmHg - Area: inches2
PETITE PEOPLE Smallest 10% of adults 111-135 lbs Petite side sleeper heatmap Avg Pressure: mmHg - Area: inches2

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The Main Beautyrest Black Hybrid X-Class Firm Features in Detail

Hybrid X-Class Firm Cutaway Image

  1. 1. BlackICE Hybrid Technology

    The cover for this mattress uses cool-to-the-touch BlackICE Hybrid Technology which is exclusive to the Beautyrest Black collection of mattresses. Simmons designed this cover to work together with several layers of memory foam to create a cooler sleep environment.

  2. 2. RightTemp Memory Foam

    Pressure-relieving memory foam is infused with carbon fibers that work to draw heat away from your body while also being strong and durable. 

  3. 3. High-Density Memory Foam

    This high-density memory foam conforms and contours to your body for personalized support and excellent pressure relief. This helps you to avoid tossing and turning at night which is associated with pressure point discomfort. 

  4. 4. Firm Comfort Foam

    Firm comfort foam gives you the firm feeling that you're looking for in a sturdy, substantial feeling bed. This comfort layer is a part of where you get that comfort rating of 3 on our 10 point scale. 

  5. 5. Self Response Latex

    Latex provides superior pressure relief for less tossing and turning while pushing back against the body for a more supportive feel. Latex also has anti-microbial and anti-dustmite properties which contribute to a healthier sleep environment.

  6. 6. T3 Pocketed Coil System

    Individually wrapped pocketed coils are made from three steel strands that are interwoven for superior support and conforming comfort. The T3 Pocketed Coil Technology is exclusive to Beautyrest Black models by Simmons.


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Comfort Depth Video

We measured how far your hips and shoulders sink into the Hybrid X-Class Firm mattress with different body types.

Aaron's Comfort View

Richard's Comfort View

Andrew's Comfort View

Warranty

The Beautyrest Black Hybrid X-Class Firm mattress has a 10-year warranty against factory defects.

Conclusion

The Beautyrest Black Hybrid X Class Firm mattress is the firmest feeling of the four X Class models offered by Simmons. If you're shopping for this firm feeling (not hard!) mattress then you need to be aware that you're getting the firmest of all X Class models. For anyone who thinks that a softer feeling mattress would be a better choice for them, there are three other X Class models that are all softer than this one. This bed did earn a 'recommended' score on 4 of the 6 sleep position/body size combinations during our pressure testing. In fact, this bed comes highly recommended for back sleepers of all sizes. It even earned a recommendation for side sleepers with petite bodies.

This mattress uses Firm Support Foam combined with the T3 Pocketed Coil System to give you a firmer feeling bed. This is the only X Class model that has Self Response Latex, which is arguably one of the best comfort foams in current bedding technology.

The X-Class Firm mattress is one of the more expensive Beautyrest Black models currently available. However, this bed is loaded with premium materials and is a very high-quality construction. I would recommend this bed to anyone who wants one of the best firm-feeling beds. It's certainly a great value for the number of premium materials you get. Be warned though, a firm feeling bed like this is not for everyone, particularly side sleepers.

Other Comfort Options

If you like the Beautyrest Black Hybrid X-Class collection, but would rather have it in a different comfort level, check out the other options below.


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Beautyrest Black Hybrid X-Class Firm Specifications:

Product Name
Queen Price

$3,099

Brand
Simmons
Mattress Comfort
Firm
Comfort Scale Number
3
Coil Count (Queen)
815
Coil Gauge
14.75
Height
14.5"
Comfort Padding Layers
Warranty
  • 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
  • 134-218 lbs
  • 111-135 lbs
Recommended For Back Sleepers Who Weigh
  • 210-273 lbs
  • 134-218 lbs
  • 111-135 lbs

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About The Author, Dave Higgins

Dave has worked in the furniture business, focusing on mattresses, for over six years. He enjoys oil painting in the Impressionist style, playing guitar, and cooking for his family. Dave also believes that English Bulldogs are the comedians of the canine world.