Twin XL Simmons Beautyrest Black K Class Medium 14.5 Inch Mattress + FREE $300 Visa Gift Card

Twin XL Simmons Beautyrest Black K Class Medium 14.5 Inch Mattress + FREE $300 Visa Gift Card

From $3,049.00

To $4,927.00






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Twin XL Simmons Beautyrest Black K Class Medium 14.5 Inch Mattress + FREE $300 Visa Gift Card
Twin XL Simmons Beautyrest Black K Class Medium 14.5 Inch Mattress + FREE $300 Visa Gift Card

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Expert Review

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The Pinacle of Luxury

by Jed Harrington

The Beautyrest Black K Class Medium is the best Beautyrest mattress available in the top of the line Black collection. This mattress combines the best comfort materials available with an attention to detail and craftsmanship not many mattresses today.

A Near Perfect All Around Comfort

The K Class Medium has a fantastic comfort level designed to strike a blend between comfort and support. With a comfort scale rating of 5 out of 10 (10 being the softest) this mattress is designed to provide good pressure relief and support, without sacrficing either.

The World's Premier Support System. Tripled

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

Cool Sleep For A Better Day

BlackICE 4.0 and RightTemp Memory Foam combine to provide an exceptionally cool sleep environment. BlackICE 4.0 uses 4 components to provide a cooler sleep surface, while RightTemp Memory Foam pulls heat away from the surface and dissipates it throughout the night.

Rest Easy

CertiPUR-US certified comfort materials are independently tested to meet or exceed the highest quality standards.

Is This Good For You?

If you're looking for one of the best luxury mattresses available today, and you want something that feels not too soft and not too firm, the Beautyrest Black K Class Medium mattress may be perfect for you. This mattress is made with the highest quality standards and carries a full 10 year warranty.


Comfort This describes how a mattress feels. The Comfort Scale rating is based on how the cushioning materials conform to the body's shape. The higher the number the softer the mattress.

Quilt - Top of Mattress This is the outside cover on the top of the mattress. It covers and protects the comfort and support layers inside.

Comfort - Padding Layers This provides a cushioning layer between you and the support system in the bed. Different kinds of padding will provide different levels of comfort.

Correct Back Support System This is a general term used to describe how a mattress distributes and stabilizes body weight and maintains proper spinal alignment. Different materials provide different levels of support.

Box Spring - Foundation (optional)

  • Regular Box Spring Height: 9
  • Low Profile Height: 5

Warranty This tells you what kind of warranty you have and how long it will last. A typical warranty lasts about 10 years.

  • 10 year warranty against manufacturer's defects
  • No Flip, No Rotate
  • Non-prorated

Made In This tells you where your mattress is manufactured.

  • United States


  • MATT-927488, STD-927658, LP-927659


Cal King14.5"72"84"
Twin XL14.5"38"80"
SizeCoil Count
Cal King1117
Twin XL513

Works With All Bed Types

Box Spring
Box Spring
Traditional Frames
Traditional Frames
Adjustable Bases
Adjustable Bases

Your mattress purchase is fully compatible with all modern support systems, including adjustable base, platform bed, box spring/foundation, even the floor!

Customer Reviews

Average Review

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Delivery Info

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Delivery Options & Timing:
Free In-Home Setup & Removal
  1. TIMING: You'll receive your mattress in about 2 to 3 weeks anywhere in the continental 48 states that's road accessible. Check your zip code for an estimated delivery date.
  2. IN-HOME WHITE GLOVE DELIVERY: It's super easy; the delivery team will bring in and place your new mattress in your bedroom unpack it and take away the packaging. You can also add mattress removal for free when you select that option online. (Delivery is up to 2 flights of stairs. Additional arrangements are subject to charge by the delivery carrier.)
  3. SCHEDULING DELIVERY: You'll be contacted by our carrier to schedule your delivery. Someone must be home to accept delivery.
  4. FURNITURE & BEDDING: Furniture & bedding deliver separately.
  5. WEEKEND OR EVENING DELIVERY: May be available for a nominal fee. Order by phone at 1-800-455-1052.
Let Us Help You
Pick the Right


  • Sleep cooler through the night with DualCool Technology
  • Feel supported with 900 Series Pocketed Coils
  • Consistent comfort with the BeautyEdge Foam Encased Edge