Beautyrest Black Hybrid L-Class Firm in roomBeautyrest Black Hybrid L-Class Firm in room

Beautyrest Black Hybrid LX-Class Firm Mattress

In Stock*

From $2,049.99


  • BlackICE™ with Plant-Based Cooling Technology
  • ¾” SurfaceTouch™ Gel Memory Foam
  • ½” Firm Comfort Foam


  • 1″ Beautyrest®  Gel  Memory Foam
  • 2” Firm Comfort Foam


  • Zoned T3 Pocketed Coil® Technology

Other Information

  • 13.75”
  • Antimicrobial Mattress Protection*
  • BeautyEdge®
  • 10 Year Limited Warranty
  • *This product does not protect users against bacteria, viruses, germs, or other disease organisms
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  • 120 Day Satisfaction Guarantee

Questions or Comments? (877) 759-8155

Beautyrest Black LX-Class Firm mattress specs

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Elevate your sleep to a luxurious reward night after night. Our most advanced collection yet, Beautyrest Black® now offers up to 21% more support where your body needs it the most.* With help from our new plant-based cooling technology, the collection provides up to 18% more cooling power to keep you comfortable as you fall asleep and throughout your night.** Together these premium features and modern design create a first-class sleep experience that will leave you feeling invigorated to take on your day.

*in the center-third of mattress, exact percentage varies by model
**vs. Beautyrest® Harmony Lux™ Collection for the first 20 minutes


  • BlackICE™ with Plant-Based Cooling Technology
  • ¾" SurfaceTouch™ Gel Memory Foam
  • ½" Firm Comfort Foam


  • 1" Beautyrest® Gel Memory Foam
  • 2" Firm Comfort Foam


  • Zoned T3 Pocketed Coil® Technology


  • Mattress feel: Firm
  • Protection: Antimicrobial Mattress Protection*
  • Edge System: BeautyEdge®
  • Height: 13.75"
  • Handles: Yes
  • Adjustable Base Compatible: Yes
  • Assembled in the USA

*This product does not protect users against bacteria, viruses, germs, or other disease organisms

Layers In Order

  1. Anti-Microbial Protection*
  2. BlackICE™ with Plant-Based Cooling Technology
  3. AirCool™ Memory Foam
  4. HD Memory Foam
  5. Firm Comfort Foam
  6. GelTouch™ Memory Foam
  7. Zoned T3 Pocketed Coil® Technology
  8. Energy Foam

Beautyrest Black LX-Class Firm mattress

Pick the Most Comfortable Mattress

Pick the mattress that is most comfortable for your sleep style and body type. This mattress is best suited for:

  • Back sleepers
  • Stomach sleepers
  • Hot sleepers
  • Larger bodied people

About Sleep Types

About Mattress Sizes


In stock merchandise purchased by 1pm will be delivered the same day upon request, excluding holidays and limited to a geographic area with a minimum purchase of $599 mattress set. Excludes floor models. See store for details.


The room must be ready for delivery when the drivers arrive.

As a service, we will remove your old mattress and box spring before delivering the new set (subject to inspection, unsanitary bedding will not be removed, limited to equal amount delivered).

As a service, we will remove your old mattress and box spring before delivering the new set (subject to inspection, unsanitary bedding will not be removed, limited to equal amount delivered).

Delivery cannot be made to a minor and finance orders will require a signature from someone with a valid state issued ID.

The driver will call the phone number provided on your order the morning of delivery to give you a three-hour time frame. If you are not home for delivery, there will be a $69.99 redelivery fee.

If the driver determines that the delivery attempt could cause damage to your home, you will be required to sign a release of liability to complete the delivery.

Our C.O.D. Policy:

All orders must be paid in full before the delivery date. We do not accept payment at the time of delivery.

10 Year Limited Warranty

Beautyrest stands by its products and materials with limited warranties so you rest easy.

Our 120 Day Sleep Guarantee

If you have owned your mattress for longer than 30 days and you aren’t happy with your set, Best Mattress is glad to exchange your mattress for 120 days from the date of purchase. Please see our full terms & conditions here.

Best Mattress also offers FREE REMOVAL* of your old mattress. Our delivery driver will pick up your old mattress and seal it in plastic before loading it onto our truck.

Need financing? We have you covered! Best Mattress offers a variety of options available, including No Credit Check Financing! Please contact us for additional details on all offers.

We appreciate your patience, understanding, and support at this time. Thank you for continuing to be a loyal Best Mattress customer. Sleep Easy, Friends!

Available Bed Sizes

See our mattress sizes and dimensions page.

Twin XL
38″ X 80″
54″ X 75″
60″ X 80″
76″ X 80″
Cal King
72″ X 84″
Twin XL size mattress dimensions Full size mattress dimensions Queen size mattress dimensions King size mattress dimensions California King size mattress dimensions

The Beautyrest Black Hybrid LX-Class Firm mattress provides complete comfort throughout the night. Enjoy firm support, pressure relief, and a consistent temperature. This premium mattress is part of the advanced Beautyrest Black collection that offers even greater luxury. Indulge yourself in an unparalleled sleep experience. Drift off quickly, sleep soundly throughout the entire night, and wake up energized.

Why Is a High-Quality Mattress Important?

A good mattress provides more than a cozy sleep surface. It should also offer the correct support, especially for your pressure points, or the heaviest parts of your body. Gentle support keeps your spine aligned and your body in the proper position. This is essential for restful and rejuvenating sleep.

If your body is out of alignment, you could experience discomfort or even exacerbate certain conditions. Back and neck pain are common complaints, as are sore muscles. Support and pressure-relieving materials keep you aligned and ease tension and poor positioning that contribute to pain.

Beautyrest is one of the top mattress collections for opulent comfort. With more than 150 years of experience creating high-quality mattresses, they know how to combine comfort with durability. This latest collection uses a combination of technologies to give you the best sleep of your life.

Premier Support System

The Beautyrest Black Hybrid LX-Class Firm mattress has been upgraded with new technology to offer 21% greater support. The center-third of your bed is the area that supports the majority of your weight. This section has been reinforced with triple-supported T3 Pocketed Coil Technology. This prevents sag and gives your body the comfort and support it requires for a full night’s rest.

T3 Pocketed Coils

Keep your spine in alignment to achieve higher quality sleep with the ultimate support. Too-soft and sagging mattresses cause parts of your body to sink below others. This often leads to waking up with pain and discomfort.

The Beautyrest Black Hybrid LX-Class firm mattress provides durable support with triple strand engineering. Rows of T3 Pocketed Coils alternate with Beautyrest Pocketed Coils. Together, they provide firm and stable support for your back and core. The coils also limit motion, so you aren’t jostled awake by your sleeping partner or another movement.


The BeautyEdge system offers enhanced support over the entirety of the mattress’s surface. Greater support around the perimeter expands the sleeping area and preserves the firm feel and stability of the mattress from edge to edge.

Ultimate Pressure Relief

This sumptuous mattress has multiple layers of memory foam to cradle your body from head to toe. Without persistent pressure, you can finally sleep deeply without tossing and turning. The mattress uses the unique combination of one inch of Beautyrest Gel Memory Foam and two inches of Firm Comfort Foam.

Beautyrest Gel Memory Foam

Gel Memory Foam cradles and contours every dip and curve of your body to alleviate pressure. The foam provides support while adjusting to your body shape in any sleep position.

AirCool Memory Foam

This foam makes it possible for you to move freely, without disturbing your partner. It also provides the right level of support for your pressure points, so your weight is evenly distributed.

HD Memory Foam

Another layer of comfort and firm support is found in the high-density memory foam. It also conforms to your shape for new levels of pressure relief.

All Night Cooling Comfort

The new collection of Beautyrest Black mattresses features an additional 18% cooling ability. This is due to the plant-based cooling technology and BlackICE. A Plant-Based PCM Cooling panel tops the ¾ inch of SurfaceTouch Gel Memory Foam plus ½ inch Firm Comfort Foam.

Feeling overheated or sweaty is a common reason for restless sleep. Together, this system ensures that body heat is drawn away from the surface of the mattress. The heat dissipates, leaving you feeling cool all night.

Rest Easy with the Beautyrest Black Hybrid LX-Class Firm Mattress

Drift away into a deep and peaceful sleep with zero worries. Your new mattress has antimicrobial protection to stay clean and free of bacteria that can cause unpleasant odors. The 13.75-inch Black Hybrid mattress features BeautyEdge and a unique design of layered materials for the best sleep ever. Buy in confidence. You’ll get a 10-year limited warranty with your purchase. Plus, all Beautyrest mattresses are assembled in the USA.

The Best Mattress Advantage

Best Mattress is committed to your satisfaction. We offer a 120-day sleep guarantee to try out your mattress and make sure you sleep soundly. Visit one of our stores today to select your new Beautyrest Black Hybrid LX-Class Firm mattress and get a more inviting sleep experience. We have 21 locations and 25 years of experience, providing our customers with superior service. We’ll even set up your new mattress in your home and haul away your old mattress for free.

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*Although the majority of our items are consistently available, there may occasionally be moments when specific products temporarily run out of stock. Rest assured, we prioritize restocking these items as quickly as possible.