Cal King Simmons Beautyrest Silver Adda 4 Medium Firm 11.75 Inch Mattress

Cal King Simmons Beautyrest Silver Adda 4 Medium Firm 11.75 Inch Mattress

From $1,049.00

To $4,726.00








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Cal King Simmons Beautyrest Silver Adda 4 Medium Firm 11.75 Inch Mattress
Cal King Simmons Beautyrest Silver Adda 4 Medium Firm 11.75 Inch Mattress

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Expert Review

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My Thoughts Concerning the Beautyrest Silver Adda 4 Medium Firm

by Jed Harrington

The Beautyrest Silver Adda 4 Medium Firm California King Size Mattress makes an excellent choice if you want to keep your cost low but still want a great mid-tier mattress with a firm comfort level that's not too hard. This mattress consists of a solid coil system, thoroughly tested comfort materials, and a great edge support-- all of the components you need to get quality sleep without breaking the bank.

Scores a 4 Out of 10 On Our Comfort Scale

With a Comfort Scale rating of 4 out of 10 (10 being the softest), the Adda 4 Medium Firm offers exactly the level of comfort most people mean when they say they want a firm mattress. The initial padding prevents you from feeling as if you're sleeping on a carpeted floor, and it delivers good body contouring while supplying solid lower back support.

Solid Support From a Highly Rated System

Widely regarded as one of the best coil systems on the market, the Beautyrest Pocketed Coil System is able to contour to the unique shape of your body while guaranteeing there's plenty of solid lower back support. Crafted from high carbon steel, this coil system is built to last, and it's conveniently compatible with all modern adjustable bases. The simple yet effective design minimizes transfer of motion to ensure you can enjoy sound nights of sleep.

Too Warm? This Mattress Can Help.

Dual Cool Technology establishes a cooling surface that keeps you sleeping comfortably cool throughout the night.

Edge Support Ensures Even Comfort

You can feel free to fall asleep sleep close to the edges without feeling like you're going to fall off the side or feel forced back toward the center. The foam-encased edge support is a key feature since it creates up to 10% more usable sleep surface compared with mattresses that don't offer an edge support.

Is the Adda 4 Medium Firm a Good Choice to Meet My Needs?

Although there are better options in the Silver collection, for a lower price point the Beautyrest Silver Adda 4 Medium Firm is capable of providing a level of comfort and support that makes it an amazing choice in the mid-price mattress category. This mattress is dependably built and comes backed by a generous 10-year warranty to ensure you're fully satisfied with your decision.


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.

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.

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.

  • 10 year warranty against manufacturer's defects
  • No Flip, No Rotate
  • Non-prorated

Made In This tells you where your mattress is manufactured.

  • United States


  • MATT-928251, STD-99200093, LP-99200094


King11.75"76"80"94 lbs.
Cal King11.75"72"84"96 lbs.
Queen11.75"60"80"74 lbs.
Twin11.75"38"75"45 lbs.
Full11.75"53"75"62 lbs.
Twin XL11.75"38"80"48 lbs.
Full XL11.75"53"80"65 lbs.
SizeCoil Count
Cal King1241
Twin XL619
Full XL860

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

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Comparable To: Fernanda Plush

Delivery Info

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Delivery Options & Timing:
Free In-Home Setup & Removal
  1. TIMING: You'll receive your mattress in about 2 to 3 weeks anywhere in the continental 48 states that's road accessible. Check your zip code for an estimated delivery date.
  2. IN-HOME WHITE GLOVE DELIVERY: It's super easy; the delivery team will bring in and place your new mattress in your bedroom unpack it and take away the packaging. You can also add mattress removal for free when you select that option online. (Delivery is up to 2 flights of stairs. Additional arrangements are subject to charge by the delivery carrier.)
  3. SCHEDULING DELIVERY: You'll be contacted by our carrier to schedule your delivery. Someone must be home to accept delivery.
  4. FURNITURE & BEDDING: Furniture & bedding deliver separately.
  5. WEEKEND OR EVENING DELIVERY: May be available for a nominal fee. Order by phone at 1-800-455-1052.
Let Us Help You
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