1718 Reviews
134251P
Beautyrest Silver® BRS900 11.75" Medium Firm Mattress
Stay cool with 900 Series Beautyrest® Pocketed Coil® technology, Gel Memory Foam, & antimicrobial layers

1718 Reviews
134251P
Beautyrest Silver® BRS900 11.75" Medium Firm Mattress
Stay cool with 900 Series Beautyrest® Pocketed Coil® technology, Gel Memory Foam, & antimicrobial layers
- DualCool™ tech keeps your mattress fresh & cool
- Gel Memory Foam relieves lumbar pressure
- 900 Series Pocketed Coil® provides support
- Motion isolation reduces partner disruptions
Low Price Guarantee
See a lower price somewhere else? We'll match it up to 120 nights with our Low Price Guarantee.
120 Night Sleep Trial®
Sleep on it for 120 nights—if you don't love it, we'll help you find a new one or your money back.
Sleep Experts® In-Store & Online
Our Sleep Experts® get 200+ hours of training annually to help you find the perfect mattress, pillows & more within your budget.
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How to get
Product Details
The Beautyrest Silver BRS900 11.75” medium firm mattress is engineered to maintain its shape and consistent comfort over the life of your mattress.Featuring 900 Series Beautyrest® Pocketed Coil® Technology that provides flexible support precisely where it is needed and isolates motion between two sleepers.
The DualCool™ Technology found in the Silver BRS900, is an antimicrobial performance layer that works to keep your mattress fresh and cool while moving heat and moisture away, so you sleep at your ideal sleeping temperature. Get support right where you need it most with Gel Memory Foam Lumbar Support.
Benefits
The DualCool™ Technology found in the Silver BRS900, is an antimicrobial performance layer that works to keep your mattress fresh and cool while moving heat and moisture away, so you sleep at your ideal sleeping temperature.
This pocketed coil support system, with a 900-coil density, provides flexible support for your entire body. Each coil is wrapped in a durable fabric sleeve to isolate motion between you and your partner, so you get a peaceful sleep.
The trusted Beautyrest® Extra Firm Pocketed Coil® System has a 900-coil density so you get even more support and durability than the BR800 model. For additional posterized support for your lower back, a gel memory foam lumbar support is positioned in the middle third of the mattress.
Sleep at your ideal temperature as the DualCool™ Technology in the antimicrobial performance layer channels heat and moisture away from your body. This keeps you, your mattress, and your bedding fresh and dry.
One inch of breathable AirCool® Foam and 1.5 inches of firm comfort foam provide pressure relief and a firm sleep surface, and keep you at a comfortable temperature while you sleep.
Product Specifications
Features
- MEDIUM-FIRM COMFORT
- MATTRESS HEIGHT
- DualCool™ Technology Dissipates Heat
- Gel Memory Foam Lumbar Support Provides Support Where You Need it Most
- 900 Series Beautyrest Pocketed Coil® Technology Provides Motion Isolation
Breakdown
- Quilting Layer
- DualCool Technology
- Comfort Layer
- 1" AirCool® Foam
- 1.5" Plush Comfort Foam
- Support System
- 900 Series Firm Pocketed Coil®
- Gel Memory Foam Lumbar Support
Delivery Information
Free Delivery
Home protection from outside dirt and elements
Delivery where you want - front door, side door or even garage
Contactless delivery, meaning we won’t enter your home
Mattress Setup and Haul Away
Includes all Free delivery services plus:
New mattress and box spring setup
Removal of packaging material from purchased item(s)
Removal of old mattress set (equal to the number of pieces purchased)*
Three maximum flight of stairs purchased items can be carried
$109.99
Mattress Setup and Haul Away / Adj Base
Includes all Mattress Setup & Haul Away services plus:
Five maximum flight of stairs purchased items can be carried
Delivery and setup of up to three mattress sets
Setup of adjustable bases purchased from Mattress Firm
$159.99
About Beautyrest
Product FAQs
How much does the Beautyrest Silver® BRS900 11.75" Medium Firm Mattress weigh?
The Beautyrest Silver® BRS900 11.75" Medium Firm Mattress weighs 42 lbs for a twin size, 44 lbs for a twin XL size, 59 lbs for a full size, 74 lbs for a queen size, 101 lbs for a king size, and 100 lbs for a cal king size.
What are the dimensions of a King, Queen, Full, and Twin size Beautyrest Silver® BRS900 11.75" Medium Firm Mattress?
The dimensions of a Beautyrest Silver® BRS900 11.75" Medium Firm Mattress is 75" x 38" x 11.75" for a twin size, 80" x 38" x 11.75" for a twin XL size, 75" x 54" x 11.75" for a full size, 80" x 60" x 11.75" for a queen size, 80" x 76"x 11.75" for a king size, and 84" x 72" x 11.75" for a cal king size.
Does this mattress need a box spring?
Yes, it is recommended to use a Box Spring with the Beautyrest Silver® BRS900 11.75" Medium Firm Mattress. Box springs provide mattress support, and improved airflow. They can also help distribute weight and reduce sagging while adding bed height.
What is a split king mattress?
A split king mattress is made up of two Twin XL mattresses placed side by side. This size is a great option for some couples because it features two separate mattresses for independent movement. There's a split in the bed so you can each select your own comfort level.
How long does a mattress last?
Mattresses last an average of 8-10 years.
How do you clean a mattress?
Cleaning a mattress is a simple step-by-step process. First, remove all bedding and covers to wash separately. Then, use the upholstery attachment on your vacuum cleaner to thoroughly vacuum the entire surface of the mattress, paying special attention to seams, crevices and edges. Then, spot-clean stains where needed using different solutions depending on the stain type. Once the mattress is clean, sprinkle a generous layer of baking soda over the surface to deodorize. After a few hours (ideally overnight), vacuum the mattress thoroughly to remove all residue.