Skip to content
SIGN UP FOR OUR MAILING LIST TO RECEIVE AN INSTANT DISCOUNT
SIGN UP FOR OUR MAILING LIST TO RECEIVE AN INSTANT DISCOUNT

Beautyrest Black® Series Three 15" Firm Mattress

Original price $3,449.99 - Original price $6,899.98
Original price
$3,449.99
$3,449.99 - $6,899.98
Current price $3,449.99
delivery time icon

Free Curbside Shipping: 2 Weeks
White Glove Delivery: 3 Weeks
White Glove Delivery + Removal: 3 Weeks

The Beautyrest Black® Series Three 15" Firm Mattress pairs Triple-Stranded Pocketed Coil® Technology with Self-Response™ Latex and SurfaceTouch™ Gel Memory Foam in a firm, supportive feel built for back and stomach sleepers. Sleep Climate™ Technology and Micro Diamond™ Memory Foam keep the surface cool to the touch, and Beautyrest's 10-Year Limited Warranty backs every mattress in the Black Series Three line.

Beautyrest Black Series Three 15 inch Firm Mattress

Series Three Support, Built Firm

The Black Series Three is built on Beautyrest's Triple-Stranded Pocketed Coil® Technology — individually wrapped coils that flex head-to-toe for targeted, individualized support and advanced motion separation. In the Firm feel, the coil layer does more of the supporting work while a moderated layer of comfort foam keeps the surface from feeling hard, for stable support with a touch of responsive cushioning.

It's built with Self-Response™ Latex, SurfaceTouch™ Gel Memory Foam, Micro Diamond™ Memory Foam, and Sleep Climate™ Technology — Series Three's upgraded cooling cover on top of all the Series One and Two comfort benefits.

Built For

Since 1925

Pioneers of Pocketed Coil® Technology

Beautyrest invented the pocketed coil — individually wrapped coils that move independently for targeted support and true motion isolation, so movement on one side of the bed stays there.

Sleep Position

Back & Stomach Sleepers

The Firm feel keeps sink to a minimum, so back and stomach sleepers stay supported and aligned instead of settling into a soft, contouring surface.

Cooling

Sleep Climate™ Technology

A cool-to-the-touch surface works to transfer heat away from the body throughout the night, so the Firm stays comfortable as well as supportive.

Why You'll Love the Black Series Three Firm

  • Triple-Stranded Pocketed Coil® Technology — individualized, head-to-toe support with advanced motion separation
  • Firm, supportive feel — built for back & stomach sleepers
  • Self-Response™ Latex & SurfaceTouch™ Gel Memory Foam — responsive, ventilated comfort layers
  • Sleep Climate™ Technology — cool-to-the-touch surface
  • Consistent 15" profile — fits standard frames, platform beds, and adjustable bases
  • Upgraded cooling cover — builds on Series One and Two with additional premium comfort layers
  • CertiPUR-US® certified foams — made without formaldehyde, flame retardants, or prohibited phthalates
  • 10-Year Limited Warranty

Sizes & Specifications

Available Sizes
  • Twin XL
  • Full
  • Queen
  • King
  • Cal King
  • Split King
  • Split Cal King
Specifications
  • Construction: Innerspring — Triple-Stranded Pocketed Coil® Technology with Self-Response™ Latex, SurfaceTouch™ Gel Memory Foam, and Micro Diamond™ Memory Foam comfort layers
  • Mattress Height: 15 inches
  • Feel: Firm
  • Certification: CertiPUR-US® certified foams
  • Warranty: 10-year limited warranty

Engineered for Firm, All-Night Support

Beautyrest Black Series Three 15 inch Firm Mattress cutaway showing coil and foam construction
Construction

What's Inside

  1. 1 Sleep Climate™ Technology — a cool-to-the-touch quilted surface that works to transfer heat away from the body.
  2. 2 SurfaceTouch™ Gel Memory Foam — a ventilated, responsive comfort layer that conforms to the body to relieve pressure.
  3. 3 Micro Diamond™ Memory Foam — infused with diamond particles that help conduct heat away from the body.
  4. 4 Self-Response™ Latex — a responsive, breathable latex layer that reacts quickly to movement and improves airflow.
  5. 5 Triple-Stranded Pocketed Coil® Technology — individually wrapped, head-to-toe coils for individualized support and advanced motion separation.
Feel & Support

Built for a Firm Feel

This is the Firm option in the Black Series Three line: less sink than Medium or Plush, with the coil layer doing more of the supporting work and the comfort layers kept moderate on top.

Why it matters:

  • Minimal sink — supportive surface for back and stomach sleepers
  • Coil-forward feel — less body-contouring than a medium or plush feel
  • Consistent support — comfort layers add cushioning without masking the coils underneath
Cooling

Sleep Climate™ Technology

A cool-to-the-touch quilted surface works with Micro Diamond™ Memory Foam to help transfer heat away from the body, so the Firm sleeps cool as well as supportive.

Why it matters:

  • Cool-to-the-touch surface — comfortable from the moment you lie down
  • Heat transfer — helps keep the sleep surface temperature-regulated through the night
  • Pairs with Self-Response™ Latex and SurfaceTouch™ Gel Memory Foam for breathable, responsive comfort
Made to Last

Certified Foams, Backed for the Long Haul

CertiPUR-US® Certified & 10-Year Limited Warranty: The Black Series Three Firm is built with CertiPUR-US® certified foams — made without formaldehyde, flame retardants, prohibited phthalates, or heavy metals — and backed by Beautyrest's 10-Year Limited Warranty.

MATTRESS DIMENSIONS

  • Twin XL

    38" wide x 80" long
    15" High

  • Full

    54" wide x 75" long
    15" High

  • Queen

    60" wide x 80" long
    15" High

  • King

    76" wide x 80" long
    15" High

  • Cal King

    72" wide x 84" long
    15" High

  • Split King (2 mattresses)

    38" wide x 80" long (each piece)
    15" High

  • Split Cal King (2 mattresses)

    36" wide x 84" long (each piece)
    15" High

*Dimensions of each individual mattress may vary slightly.

SPECIFICATIONS

  • Construction: Innerspring — Triple-Stranded Pocketed Coil® Technology with Self-Response™ Latex, SurfaceTouch™ Gel Memory Foam, and Micro Diamond™ Memory Foam comfort layers, and a Sleep Climate™ Technology surface
  • Mattress Height: 15 inches
  • Feel: Firm
  • Certification: CertiPUR-US® certified foams
  • Warranty: 10-year limited warranty
  • Care: Spot clean only — use a clean white cloth with a mild oxi-based cleaning solution, blot (don't rub), and air dry completely before use. Use a mattress protector; do not apply liquids directly to the mattress. Rotate periodically for even wear.

10-Year Limited Warranty

COVERAGE

Beautyrest® or Simmons® mattress or foundations used with proper support is protected by a 10 year limited manufacturer’s warranty. The limited warranty covers manufacturing defects in your Beautyrest® or Simmons® mattress or foundation including faults in materials or manufacturing defects in the removable fabric cover available on select models. Replacement of one piece due to manufacturing defect does not automatically result in the replacement of any other piece. This limited warranty is provided only to the original purchaser and is not transferable.

EXCLUSIONS

    This warranty does not apply to and excludes:

    Consumer firmness/comfort preference.

    Normal changes in softness or recovery time of high density foams, including memory foam, due to normal use, temperature, or humidity.

    Normal body impression(s) as indicated by your warranty code (see chart).

    Consumer bed height/weight preference.

    Cover (fabric) and handles.

    Corner guards.

    Bent border/grid wires.

    Burns, cuts or tears.

    Vermin infestations.

    Mattresses or foundations displaying stains or soil that reasonably indicates the presence of potentially dangerous bodily fluids, blood borne pathogens or other substances that could cause injury.

    Mattresses used with an inadequate foundation and/or support system.

    Adjustable foundations (see owner’s manual for details on warranty coverage).

    Merchandise sold “as-is”, “distressed” or “floor model/sample”.

    Claims made outside the 50 United States, District of Columbia, Puerto Rico or U.S. Virgin Islands.

    Transportation, inspection, or removal costs of product, except in California.

TERM

The warranty coverage runs from the original date of purchase. Replacement of the mattress or foundation does not extend its limited warranty or begin a new limited warranty period. Your warranty period is based on the code printed on your white law label as indicated on the Warranty Code Chart below.

Warranty Code on Law Label B J H A P
Total Limited Warranty 1 Year 3 Year 5 Year 10 Year 10 Year
Normal Body Impression 1 1/2” or less 1 1/2” or less 1 1/2” or less 1 1/2” or less 3/4” or less

Please refer to Beautyrest.com or Simmons.com for additional codes.

SERVICE

If your Beautyrest® or Simmons® mattress or foundation fails due to a manufacturing defect, the exclusive remedy under this warranty will be replacement of the defective product in the U.S., Puerto Rico or U.S. Virgin Islands. If the Beautyrest® or Simmons® product you purchased is discontinued at the time of replacement, a current model of comparable quality and value will be selected.

To receive service under the terms of this warranty contact your original Beautyrest® or Simmons® dealer. If your original Beautyrest® or Simmons® dealer is no longer in business or you have moved outside the service area, please contact Simmons Consumer Services at customerassistance@simmons.com. A copy of original bill of sale is needed to determine original date of purchase. Model name label and law label must be provided to identify the bedding and validate this warranty.

Your Rights Under State Law

This warranty gives you specific rights, and you may have other rights, which vary from state to state. This warranty is extended only to the original purchaser from Simmons Bedding Company or its authorized dealers.