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Beautyrest Black® Hybrid Series Three Firm Mattress

Original price $2,249.00 - Original price $4,498.00
Original price $2,249.00
$3,349.99
$3,349.99 - $6,699.98
Current price $3,349.99
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Free Curbside Shipping: 2 Weeks
White Glove Delivery: 3 Weeks
White Glove Delivery + Removal: 3 Weeks

The Beautyrest Black® Hybrid Series Three Firm Mattress pairs a Triple-Stranded Pocketed Coil® support core with Self-Response™ Latex, FORM™ HD Material, and Micro Diamond™ Memory Foam in a firm feel built for sleepers who want a supportive, minimal-sink surface. A Sleep Climate™ Surface keeps the top of the mattress cool to the touch, and the 14.5" profile is backed by Beautyrest's 10-Year Limited Warranty.

Beautyrest Black Hybrid Series Three Firm Mattress

Premium Hybrid Support, Built Firm

The Series Three Firm is the premium tier of Beautyrest's Black Hybrid line, built on the same Triple-Stranded Pocketed Coil® support core and Sleep Climate™ Surface shared across the Black Hybrid family, with Self-Response™ Latex added at this tier for improved pressure relief and airflow.

FORM™ HD Material and Micro Diamond™ Memory Foam sit on top for contouring, cooling comfort — but in the firm feel those layers stay thinner, so the coil core does more of the supporting work and sink stays to a minimum.

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.

Cool All Night

Enhanced Cool-to-the-Touch Surface

The Series Three Sleep Climate™ Surface is enhanced for this tier, drawing heat away from the body so the top of the mattress stays cool to the touch through the night.

Why You'll Love the Black Hybrid Series Three Firm

  • Premium hybrid construction — pocketed coils, latex, and foam working together
  • Firm, minimal-sink feel — built for back & stomach sleepers
  • Targeted pressure relief — Self-Response™ Latex adds give without sacrificing support
  • Cooler sleep — enhanced Sleep Climate™ Surface plus Micro Diamond™ Memory Foam
  • Consistent 14.5" profile — fits standard frames, platform beds, and adjustable bases
  • True motion isolation — individually wrapped coils keep movement from transferring across the bed
  • CertiPUR-US® certified foams
  • 10-Year Limited Warranty

Sizes & Specifications

Available Sizes
  • Twin XL
  • Full
  • Queen
  • King
  • Cal King
  • Split King
  • Split Cal King
Specifications
  • Construction: Hybrid — Triple-Stranded Pocketed Coil® support core with Self-Response™ Latex, FORM™ HD Material, and Micro Diamond™ Memory Foam comfort layers
  • Mattress Height: 14.5 inches
  • Feel: Firm
  • Certification: CertiPUR-US® certified foams
  • Warranty: 10-year limited warranty

Engineered for Firm, All-Night Support

Beautyrest Black Hybrid Series Three Firm cutaway showing coil and foam construction
Construction

What's Inside

  1. 1 Sleep Climate™ Surface — an enhanced cool-to-the-touch cover that draws heat away from the body.
  2. 2 Micro Diamond™ Memory Foam — diamond-particle-infused foam that transfers heat away from the body for a cooler sleep surface.
  3. 3 FORM™ HD Material — a deeply contouring comfort layer with enhanced airflow, kept thinner at this feel to preserve the firm, supportive surface.
  4. 4 Self-Response™ Latex — a responsive latex layer that improves pressure relief and airflow through the mattress.
  5. 5 Triple-Stranded Pocketed Coil® Technology — the head-to-toe support core, with each coil moving independently for individualized support and advanced motion separation.
Feel & Support

Built for a Firm Feel

This is the Firm option in the Black Hybrid Series Three line: less sink than the Medium or Plush versions, with the Triple-Stranded Pocketed Coil® core doing more of the supporting work and the FORM™ HD Material and Micro Diamond™ Memory Foam layers kept thinner on top.

Why it matters:

  • Minimal sink — supportive surface for back and stomach sleepers
  • Coil-forward feel — less body-contouring than a plush or medium feel
  • Consistent support — Self-Response™ Latex adds comfort without masking the coil support underneath
Cooling

An Enhanced Cool-to-the-Touch Surface

The Series Three Firm pairs an enhanced Sleep Climate™ Surface with Micro Diamond™ Memory Foam, so the top of the mattress feels cool to the touch and heat is pulled away from the body throughout the night.

Why it matters:

  • Cool-to-the-touch cover — comfortable from the moment you lie down
  • Heat transfer away from the body — helps prevent overheating during the night
Made to Last

CertiPUR-US® Certified, Backed for the Long Haul

10-Year Limited Warranty: Every foam layer in the Black Hybrid Series Three Firm is CertiPUR-US® certified — made without formaldehyde, flame retardants, prohibited phthalates, or heavy metals, and tested for low chemical emissions. Beautyrest backs it with a 10-Year Limited Warranty.

MATTRESS DIMENSIONS

  • Twin XL

    38" wide x 80" long
    14.5" High

  • Full

    54" wide x 75" long
    14.5" High

  • Queen

    60" wide x 80" long
    14.5" High

  • King

    76" wide x 80" long
    14.5" High

  • Cal King

    72" wide x 84" long
    14.5" High

  • Split King (2 mattresses)

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

  • Split Cal King (2 mattresses)

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

*Dimensions of each individual mattress may vary slightly.

SPECIFICATIONS

  • Construction: Hybrid — Triple-Stranded Pocketed Coil® Technology support core + Self-Response™ Latex, FORM™ HD Material, and Micro Diamond™ Memory Foam comfort layers, with a Sleep Climate™ Surface cover
  • Mattress Height: 14.5 inches
  • Feel: Firm
  • Certification: CertiPUR-US® certified foams
  • Warranty: 10-year limited warranty
  • Care: Use a mattress protector to help guard against stains and extend the life of the mattress. Do not apply liquids directly to the mattress — for spot cleaning, apply baking soda to the affected area, let stand about 15 minutes, then vacuum, and repeat as needed. Air out the mattress regularly and 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.