Beautyrest Black® L-Class Medium 13.5" Mattress


Beautyrest Black® L-Class Medium 13.5" Mattress

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Size: Twin XL
  • Free Delivery in 2 - 4 Weeks*
Adjustable Base and Box Spring

Why Do Customers Love US-Mattress?

  • 120 Night In-Home Trial
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Luxuriously Firm Level of Comfort

by David Higgins

The Beautyrest Black® L-Class Medium mattress makes a phenomenal choice if you like a firm but not hard level of comfort and want something that feels luxurious.

Firm Yet Comfy Overall Feel

Firm but not hard, the L-Class Medium conforms to the lower back without feeling too enveloping. We gave it a Comfort Scale score of 4 out of 10 (with 1 being the firmest) because of its ability to gently cushion the hips and shoulders but offer a solid underlying feel.

One of the Top Support Systems Available

The T3 Pocketed Coil System supplies top-tier support through a three-piece braided coil made from high carbon steel.

Excellent Temperature Control

BlackICE 4.0, which incorporates natural all night cooling is a high quality four-stage cooling system that uses four components working together to keep you cooler.

Utilizes Beautyrest Gel Memory Foam

This foam enhances conformability and pressure relief to improve deep REM sleep and ensure less motion transfer.

Want a medium feel? You'll Love This.

If you enjoy a firm level of comfort, but not one that feels like sleeping on the living room floor, the L-Class Medium will make a wonderful choice for your sleeping style.

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: 13.5"

Comfort: Firm

Warranty: 1 Year

Quilting Layer

Anti-Microbial Protection*

Comfort Layer

BlackICE™️ with Plant-Based Cooling Technology

1 1/4" AirFeel™ Foam

3/4" SurfaceTouch™ Gel Memory Foam

1" Beautyrest® Gel Memory Foam

1" GelTouch® Foam

Support System

Zoned T3 Pocketed Coil® Technology

Works With All Bed Types

  • Box Spring

    Box Spring

  • Traditional Frames

    Traditional Frames

  • Adjustable Bases

    Adjustable Bases

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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