King Ashley Sierra Sleep 12 Inch Hybrid 1200 Plush Bed in a Box

King Ashley Sierra Sleep 12 Inch Hybrid 1200 Plush Bed in a Box

Out of Stock

Sale Ends July 26th

120 Night In-Home Trial

From $789.00

To $978.00


Reg: $1,049.00 You save $260.00!
$65.75/mo suggested payments with 12 months special financing.
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King Ashley Sierra Sleep 12 Inch Hybrid 1200 Plush Bed in a Box
King Ashley Sierra Sleep 12 Inch Hybrid 1200 Plush Bed in a Box

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Expert Review

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My Take on The Ashley Sierra Sleep Hybrid 1200 Plush Mattress

by Jed Harrington

The Ashley Sierra Sleep Hybrid 1200 Plush has everything you need to start enjoying deep, restful sleep, without breaking the bank. If you like a neutral, not too firm, not too soft, level of comfort, this may be perfect for you.

Conforming, yet Supportive

With a comfort scale rating of 6 out of 10 (10 is the softest) the 1200 plush has a neutral level of comfort designed to provide an excellent blend of body contouring pressure relief and deep down support.

Comforming and Solid Support

The 8 inch power packed coil system provides solid support to the lower back with less motion transfer for undisturbed sleep.

Smooth Top Quilt Design

The Smooth Top Quilt puts almost no barrier between your body and the comfort layers, which allows them to fully conform to your body with zero inconsistency.

HD Gel Memory Foam

High Density Gel Memory Foam offers superior pressure relief to help reduce tossing and turning, outstanding durability, and helps reduce motion transfer for undisturbed sleep.

CertiPUR-US Certified

All Ashley Sleep foams are independently tested and certified to meet or exceed the higest quality standards.

An Exceptional Value

The Ashley Sierra Sleep Hybrid 1200 is proof you don't have to spend a lot to get a great mattress. If you like a neutral level of comfort, go for it, you won't be disappointed.


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.

  • Luxurious Knit Cover
  • 2" HD Gel Memory Foam

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.

  • 2" HD Cushion Firm Foam

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)

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


  • MATT-929019, FDN-929646


SizeCoil Count

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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Xsensor Overview

We test and measure body pressure on each mattress using sophisticated technology. We then provide you a personal recommendation.

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Comfort Depth Overview

See how far you'll sink into our mattresses - see how they'll feel. With our Comfort Depth measurements you'll know how a mattress will feel.

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Delivery Info

Free Contactless Delivery

Putting the customer first has always been our top priority. Now it's even more important to make sure we're doing everything to keep you and the delivery personnel safe. Here are some of the steps we're taking:

  1. Contactless Delivery: Your mattress order ships FREE via UPS/FedEx ground.
  2. All Mattresses are delivered in a sealed bag or box.
  3. We've enhanced cleaning and sanitizing of all facilities and trucks.

Additional Delivery Details

  1. TIMING: You'll receive your mattress in about 2 to 3 weeks anywhere in the continental 48 states that's road accessible.
  2. FURNITURE & BEDDING: Furniture & bedding deliver separately.
  3. 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