King Simmons Beautyrest Black K Class Ultimate Plush Pillow Top 18 Inch Mattress + FREE $300 Visa Gift Card

King Simmons Beautyrest Black K Class Ultimate Plush Pillow Top 18 Inch Mattress + FREE $300 Visa Gift Card

From $4,799.00

To $8,476.00






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King Simmons Beautyrest Black K Class Ultimate Plush Pillow Top 18 Inch Mattress + FREE $300 Visa Gift Card
King Simmons Beautyrest Black K Class Ultimate Plush Pillow Top 18 Inch Mattress + FREE $300 Visa Gift Card

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Softest High Grade Mattress Available

by Jed Harrington

The Beautyrest Black K Class Ultimate Plush Pillow Top is perfect for anyone looking for the best soft mattress from Beautyrest. It’s made with the very best comfort materials, support system, and cooling solution in the Beautyrest lineup, and it is designed to provide maximum pressure relief.

Soft, Enveloping Feel

Scoring a Comfort Scale rating of 10, the Beautyrest Black K Class Ultimate Plush Pillow Top is among the softest mattresses we've ever tried. Whether you're a side sleeper who wants maximum pressure relief or a back sleeper who is looking for a design that envelops the body, this mattress will provide everything you're looking for.

Superb Support System

The T3 Pocketed Coil System features three steel strands, all braided into one solid coil that absorbs energy, isolates transfer of motion, and provides remarkable support, durability, and undisturbed sleep.

Multistage Cooling System Guarantees Cool Comfort

BlackICE 4.0 and RightTemp Memory Foam are both included to ensure you can sleep comfortably cool. BlackICE 4.0 is made up of four components to provide a cooler sleeping surface, while RightTemp Memory Foam pulls heat away from the surface of the mattress and dissipates it throughout the night.

Exceptional Quality Guaranteed

CertiPUR-US certified comfort materials are independently tested to meet or outperform the top quality standards in the bedding industry.

Is This The Best Mattress For You?

If you prefer soft comfort and want the best that’s available, this model is the ideal choice for you. As far as we’re concerned, there isn't a more impressive Beautyrest Black mattress in the line. The K Class Ultimate Plush Pillow Top delivers all that you need to start enjoying luxuriously soft, enveloping comfort for many years.

Physical Characteristics

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-927506, STD-A215607, LP-A215608

Physical Measurements

Cal King18"72"84"
Twin XL18"39"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

15 Reviews
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Delivery Info

Check Delivery Estimate
Express Delivery Available
Delivery Options & Timing:
Free In-Home Setup & Removal
  1. TIMING: You'll receive your mattress in about 4 to 6 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.
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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