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Beautyrest Black Hybrid BX-Class 12.5" Hybrid Firm Mattress -California King



  • T3 Pocketed Coil® Technology provides targeted support and absorbs energy to reduce motion
  • Our zoned pocketed coil® technology provides target support where you need it most
  • Plant-based cooling right at the surface keeps you cool and comfortable as you fall asleep
  • We only use CertiPUR-US® certified foams in all our products

Quick Specs

  • Brand: SIMMONS
  • Line: Beautyrest
  • Type: Tight Top

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Experience the benefits of better sleep with Beautyrest Black® B-Class. Designed at the intersection of luxury and innovation, this foundational model features a zoned, T3 pocketed coil® support system for targeted support across your entire body. Its plant-based cooling technology cools the mattress's surface so you can sleep luxuriously cool, while specialized layers of gel and memory foams provide pressure relief all throughout the night. With these special features cast for your comfort, and a modern design to match, you can elevate your sleep experience with the base-level, Beautyrest Black® B-Class model.


  • T3 Pocketed Coil® Technology provides targeted support and absorbs energy to reduce motion
  • Our zoned pocketed coil® technology provides target support where you need it most
  • Plant-based cooling right at the surface keeps you cool and comfortable as you fall asleep
  • We only use CertiPUR-US® certified foams in all our products
  • All our mattresses are proudly assembled in the USA
  • Adjustable Base Friendly - helps reduce snoring and makes reading or watching TV more comfortable
  • We stand by our Beautyrest mattresses with a 10-Year Limited Warranty
  • Your new mattress may initially feel firmer than expected. Please allow up to 60 days to acclimate to your new mattress as it naturally adjusts to contour, comfort, and support you best
  • Gives the sensation of lying on top of the mattress with little give and a smooth top that conforms to your shape
  • Premium memory foam is temperature-sensitive; it may feel firmer in cooler temperatures and softer in warmer ones. For your preferred comfort, please allow several hours for your memory foam mattress to adjust to the room's temperature
Brand Beautyrest
Manufacturer Name Serta Simmons Bedding LLC
UPC 889152622007
Computed Mattress Size Cal King
Country of Manufacture USA
Assembled in USA? Yes
Computed Product Type One Sided Mattress
Product Category Mattress
Family Name Beautyrest Black Hybrid
SubFamily Name Hybrid BX-Class
Mattress Top Type Tight Top
Mattress Type Hybrid
Product Type Mattress
Year of Launch 2023
Dealer Line National Line
Layer 1 Material Beautyrest® Gel Memory Foam
Layer 1 Thickness (in) 1
Layer 2 Material Beautyrest® Gel Memory Foam
Layer 2 Thickness (in) 1
Layer 3 Material Firm Comfort Foam
Layer 3 Thickness (in) 1
Layer 4 Material Zoned T3 Pocketed Coil® Technology
Layer 4 Thickness (in) 8
Layer 5 Material Energy Foam
Layer 5 Thickness (in) 1.5
Base Layer Material 1" Energy Foam
Product Depth (in) 83.5
Product Height (in) 12.5
Product Width (in) 72
Shipping Depth (in) 84
Shipping Height (in) 13
Shipping Width (in) 72.5
Product Weight (lb) 141.97,
Shipping Weight (lb) 163
Edge Support Technology Name BeautyEdge®
Adjustable Base Compatible? Yes
Antimicrobial? No
Breathable Construction? Yes
Coil Count 1755
Coil Density 2292.540722321419
Coil Type Pocketed Coil
Coil Gauge Every other row = 3x0.054", Alternating center = 0.086", Alternating head/foot = 0.083"
Cooling Technology? Phase change material
Edge Support? Yes
Foam Infusion? None
Handles Included? Yes
Hypoallergenic? No
Is Mattress 2 Sided? No
Latex Free? Yes
Low Motion Transfer? Yes
Lumbar Support Yes
Mattress Comfort Level Firm
Mattress Cover Design Geometric
Mattress Cover Stitch Design Lines
Mattress In A Box? No
Memory Foam? Yes
Moisture-Wicking? Yes
Natural Fibers? No
Pillow Top? No
Primary Foam Type Gel Memory Foam
Product Cubes 47.58
Quilted Cover? No
Reinforced Center? Yes
Side Color White
Top Cover Color Gray
Weight Capacity 1000
Zipper Cover Machine Washable? No
Zipper Cover? No
Product Warranty Length 10
Does it Ship in a box Yes

Quick Specs

  • Manufacturer

  • Brand: SIMMONS
  • Line: Beautyrest

  • Appearance

  • Type: Tight Top
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Professional delivery and installation is available for every product we sell. We would be happy to coordinate delivery and installation for you.

All mattresses or foundations with proper support and are stain free are protected by a limited manufacturer's warranty. The limited warranty covers manufacturing defects and faults in materials. Replacement of one piece due to manufacturing defect does not automatically result in the replacement of another piece. The limited warranty is provided only to the original purchaser and is not transferrable.

This warranty does not apply to and excludes:

  • Consumer firmness/comfort preferences
  • Normal changes in softness or body impressions over time
    • 3/4" body impression is the standard for all foam mattresses
    • 1 1/2" body impression is the standard for all inner spring mattresses
  • Consumer bed height/weight preference
  • Cover fabric and handles
  • Corner guards
  • Burns, cuts or tears
  • Vermin infestations
  • Mattresses used with inadequate foundation and/or support system
  • Mattresses displaying stains or soil
  • Mattresses WITHOUT the original Law Tags in place
  • Merchandise sold "As-Is" or "Floor Model sample" unless otherwise specified onsales order
The warranty coverage runs from the original date of purchase and the warranty period is based on the code printed on your white law label tag.

MattressMan does not approve nor deny a warranty claim as that is the manufacturers' decision. We will, however, expedite service on the manufacturer's warranty by submitting to the manufacturer all of the information needed on the warranty claim form.

Adjustable Bases Warranty

Protect your investment in an adjustable base with our Sleep EASY Guarantee 10-Year Protection Plan This comprehensive 10-year plan covers mechanical or structural failure of the base for the portion of the original manufacturer's warranty that has expired, including frames, welds, mechanisms and electrical components.

Sleep EASY Guarantee 10-Year Protection Plan for Adjustable Bases... $149.99