Beautyrest Black® K-Class Firm Pillow Top 15.75" Mattress


Beautyrest Black® K-Class Firm Pillow Top 15.75" Mattress

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Size: Twin XL
  • Delivery in 4 - 6 Weeks*
Adjustable Base and Box Spring

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Among the Best Beautyrest Mattresses

by David Higgins

The Beautyrest Black® K-Class Firm Pillow Top includes everything you'd expect a top level mattress to have. It's designed to keep you comfortably cool while supplying body-cradling pressure point relief and solid support to the lower back.

Firm And Still Comfortable

The K-Class Firm Pillow Top has a Comfort Scale rating of 3, which is on the firmer side of medium. In my opinion, this comfort level is almost perfect for back sleepers who enjoy a firmer feel. It provides the initial softness required to contour to your lower back, but it also offers really substantial and solid underlying support.

One of the Top Support Systems Available Today

The T3 Pocketed Coil System is made up of three steel strands braided into one solid coil that absorbs energy, reduces motion transfer, and provides outstanding durability, support, and undisturbed sleep.

Sleep Cooler, Rest Better

BlackICE 4.0 which incorporates natural all night cooling and SurfaceTouch Gel Memory Foam are both used in this mattress to provide an exceptionally cool sleep environment. BlackICE 4.0 features four components to ensure you have a cooler sleep surface, while SurfaceTouch Gel Memory Foam pulls heat away from the surface and dissipates it throughout the night.

Everything The Beautyrest Black® Line Offers

The K-Class is Beautyrest Black®s highest addition to the Beautyrest Black® collection and includes all the great features that you will find in both the L and C-Classes but also incorporates 3" of Dynamic Response memory foam and a 1" layer of Nano coils - both of these layers you will only find in K-Class models.

Is This The Best Choice For Me?

If you're searching for a Beautyrest mattress that has it all, the Beautyrest Black® K-Class Firm Pillow Top is an excellent choice. This mattress has an exceptional feel, high quality components, and a support system made using the finest construction in the Beautyrest line. That's everything you need to begin enjoying deep, restful sleep.

Read More About Product


  • Pressure Relief
    Pressure Relieving

    Incorporates a layer of conforming materials that mold to your body, offering appropriate support and alleviation.

  • Supportive

    Incorporates a support mechanism designed to adapt to your body's contours, promoting balanced weight distribution for optimal alignment.

  • Cooling Technology
    Cooling Technology

    Incorporates materials and elements engineered to regulate temperature by dispersing heat away from the body, ensuring a cool and comfortable sleep experience.

  • Breathable

    The breathable layers of this mattress promote cooler sleeping conditions, reducing the likelihood of waking up frequently during the night.

  • Motion Transfer
    Motion Transfer Reduction

    Motion isolation attributes aid in separating your partner's movements, such as tossing, turning, or shifting during sleep, promoting longer, uninterrupted rest for you.

  • Adjustable Base Friendly
    Adjustable Base Friendly

    This mattress is compatible with adjustable bases, which can raise your head and/or feet, easing snoring, sinus pressure, enhancing circulation, and providing numerous other health advantages.


Height: 15.75"

Comfort: Firm

Quilting Layer

Anti-Microbial Protection*

Comfort Layer

BlackICE™️ with Plant-Based Cooling Technology

3/4" SurfaceTouch™ Gel Memory Foam

1/2" Firm Comfort Foam

3" Dynamic Response™ Memory Foam

1" Comfort Layer made with Alpaca, Cashmere, & Silk Fibers

1/2" Self Response™ Latex

Support System

Zoned T3 Pocketed Coil® Technology

2K Nano Coils

Works With All Bed Types

  • Box Spring

    Box Spring

  • Traditional Frames

    Traditional Frames

  • Adjustable Bases

    Adjustable Bases

  • Platform


Your mattress purchase is fully compatible with the selections shown above!

Build Your Perfect Sleep System

Adjustable Base
Adjustable Base
A sturdy adjustable base puts you in control of your sleep setup.
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The perfect pillow creates the ideal balance of softness and support.
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Mattress Protector
Mattress Protector
Keep your mattress safe from stains, water, and changing temperatures.
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