Beautyrest Black K-Class Firm Pillowtop Mattress Review

Updated May 19, 2022

firm pillow top

If you're considering the top-of-the-line firm feeling mattress from Beautyrest Black, read this review for more insight into whether this bed is right for you.  The K-Class Firm Pillowtop is an expensive firm model at $4,099 (queen size.)  In this review, we detail how it's made and we'll also publish our first-hand pressure tests in the near future.

Comfort Scale Rating

The K-Class Firm Pillowtop mattress has a firm feel; we rate it a 2 on our 10 point Comfort Scale (a 1 is hard, 10 is softest.)  This feel is in the middle and appeals to almost everybody.  Unless you like a very firm or a very soft mattress, you'll like the way this bed feels. We also carry a plush option.

Expert Video Review

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

VIDEO COMING SOON

Pros & Cons

PROS CONS
  • Premium materials and construction
  • Excellent support and contouring
  • Layer of nano-coils
  • Several layers of memory foams
  • Minimal motion transfer
  • The expensive price of $4,099 (queen-size)
  • 17 1/2" tall, so you want to consider using a lower profile foundation to offset that height
  • No twin size

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Pressure Test Results

We will pressure tested the K-Class Firm Pillowtop mattress and will publish our results soon.  We test it 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.) 

We do our pressure tests to see how the mattress performs in those different sleeping positions with various body-sized people.  We can see if there are painful pressure points or areas lacking proper support.  Both of those things can ruin your sleep and we find the testing we do shows real insight into how a mattress will perform. This mattress is very tall with many layers of materials so we'd expect it to do pretty well when we publish our results.

Below is a sample of what a pressure test looks like. We'll update our review after we pressure test the mattress and let you know how it did.

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

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

The Main Beautyrest Black K-Class Firm Pillowtop Features in Detail

k class firm pillowtop 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. SurfaceTouch Gel Memory Foam

SurfaceTouch Gel Memory Foam is sewn into the quilt to work directly under the sleep surface to quickly unlock advanced pressure point relief from the moment you lie down.

4. Firm Comfort Foam

High quality comfort foams in different levels of plushness used in various constructions to create comfort preferences.

5. Dynamic Response Memory Foam

Eliminate pressure points with the unique feeling as Dynamic Response memory foam contours and conforms to your personal shape.

6. 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.

7. 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.

8. 2K Nano Coil

2000 micro coils provide enhanced conformability and pressure relief with individualized back support for each unique person.

9. 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.

10. Energy Foam

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

New Features

Compared to the old model, the new K-Class Firm Pillowtop mattress has SurfaceTouch Gel Memory Foam as well as Alpaca, Cashmere, and Silk Fibers in the comfort layers. You can compare the old model here.

Warranty

The K-Class Firm Pillowtop mattress has a 10-year warranty against factory defects.

Beautyrest Black K-Class FAQs

  1. What is new to the Beautyrest Black K-Class Firm Pillowtop mattress?

    The new models use SurfaceTouch Gel Memory Foam as well as Alpaca, Cashmere, and Silk Fibers in the comfort layers.  

  2. How does the 120-night trial work?

    With the 120-night trial, try the mattress for at least 30 days, and up to 120 nights. If you're not satisfied, you can replace it. All you'll have to pay is a $139 processing fee, shipping and delivery are covered!

  3. Do I need to flip my Beautyrest Black K-Class mattress?

    No, Beautyrest Black 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.

Conclusion

The Black K-Class Firm Pillowtop mattress is really tall at 15 3/4", and firmer feeling at the same time, even though it's a pillow top design.

The 3 inches of Dynamic Response Memory Foam set it apart from the other K-Class beds and give this model its firm feel. It also has a lot of other features and layers of supportive foams. For more options, check out the plush mattress

It has the Zoned T3 pocketed coil, a cooling material called BlackICE with Plant-Based Cooling Technology, and a layer of micro coils to help with the overall feel. We can see it's packed with premium materials and will be a very substantial bed.

If you want a high-quality firm mattress for your money, this one gives you a lot of high-end features and materials that accumulate to over 17" in height.


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Beautyrest Black K-Class Firm Pillowtop Specifications:

Product Name
Queen Price

$4,099

Brand
Beautyrest Black
Mattress Comfort
Pillowtop
Comfort Scale Number
2
Coil Count
815
Coil Gauge
13.5
Height
15.75"
Comfort Padding Layers
Warranty
  • 10 Year Manufacturer Warranty Included

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

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