Sealy Posturepedic Hybrid Cobalt Firm King Size Mattress

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  1. Select Size:
    Cal King
    Select SizeSale
    Cal King$1,659

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Expert Review By Jed
The Sealy Posturepedic Premier Hybrid Cobalt is the entry-level model from the Hybrid collection. The King size of this model is designed for couples who want a spacious mattress with high-end comfort and support. The Cobalt scored a medium-firm Comfort Scale rating of 4, having a firm overall feel with good contouring capabilities. I recommend this mattress to back and stomach sleepers, but suggest side sleepers go with something softer to avoid discomfort in the hips and shoulders.

The Cobalt relies on the Zoned Sealy Embrace Premier Coil System for core support. This system features a series of individually wrapped coils that deliver solid support as well as effective contouring. This coil system is zoned, meaning there are more coils in the center third of the mattress to improve support and durability where you need it most. The individually wrapped design is important for couples as it transfers much less motion than tied coil designs.

On top of the coil system, a layer of SealyCool Gel Memory Foam is added to the center third of the mattress to bolster support to the vital lower back area. On top of that, a layer of SealyCushion Extra Soft Foam is used to provide some padding and a soft layer that will contour to the curves of your body. Lastly, the top layer of the Cobalt is a full layer of SealyCool Gel Memory Foam that effectively reduces pressure points so you toss and turn less. SealyCool Gel Memory Foam is very durable, allowing the sleeping surface to maintain its showroom comfort for a long time. It also helps reduce motion transfer, and SealyCool Gel Memory Foam includes phase change material which is able to maintain a temperate sleeping surface all night long.

In summary, Sealy achieved a really good balance of performance and affordability with this model. The King size Sealy Posturepedic Premier Hybrid Cobalt is a great choice for couples who want a spacious, medium-firm mattress. It boasts the benefits of both innerspring support and memory foam at an affordable price point. It also comes backed by a 10-year warranty, so you can be confident in your investment.

ComfortQuilt - Top of Mattress
Comfort - Padding Layers
Correct Back Support System
Box Spring - Foundation (optional)
Coil Counts:
Mattress Dimensions
Made In: Code:
Free In-Home Setup

Free In-Home Setup & Delivery
  1. TIMING & DELIVERY: From time of order, receive your mattress in about 1 to 2 weeks anywhere in the continental 48 states and Canada that is road accessible (Canada Details). Check your zip code when selecting your delivery option for an estimated delivery date.Remote locations may take an additional 1 to 2 weeks.
  2. SERVICE LEVEL: Delivery is super easy with In-Home White Glove delivery service. The delivery team will bring in and place your new mattress into your bedroom, unpack it and take away the packaging for you. (Delivery is up to 2 flights of stairs. Additional arrangements are subject to charge by the delivery carrier.)
  3. SCHEDULING DELIVERY: You will be called to arrange the delivery when your mattress has arrived at the local delivery agent, approximately a week after order. Someone must be home to accept delivery.
  4. FURNITURE & BEDDING: Furniture ordered at the same time will ship separately. If you would like us to wait until all the items on your order are ready to ship, please call us at time of order and we can arrange one delivery. Bedding ships separately via UPS.
  5. ADDITIONAL SERVICES: Mattress removal is available for free when you select your delivery option online. For your added convenience, these other options are available for a nominal fee by phone only at 1-800-455-1052:
    • Evening delivery
    • Weekend or holiday delivery
100 night comfort guarantee

100% Money Back Guarantee:

You'll love your new Sealy Posturepedic Hybrid or you'll get 100% of your money back, guaranteed.

You'll feel confident in your choice when you sleep on a new Sealy Posturepedic Hybrid, thanks to the 120 Day In-Home even better guarantee than our site wide 100 Night Comfort Guarantee!

Evaluate your new Sealy Posturepedic Hybrid in the comfort of your own home for 120 days, risk free. Just sleep on it for at least 30 nights so that your body can adjust to the new support system and if you are not completely satisfied with your mattress after 30 nights, let us know. We'll give you 100% of your money back, stress free. No shipping charges, fees or worries!

lowest price guarantee

Lowest Price Guaranteed or your Mattress is Free!

We guarantee that our prices are the lowest you can find anywhere - on or off the web! If you can find a comparable advertised mattress set for a better price somewhere else, simply call or email us with the store information or the website where you found it within 30 days of your purchase. We won't just match their price, we'll match 110% of the difference, or your mattress is free! Price comparison includes all applicable order charges including, but not limited to: product price, comparable service delivery charges, fees and taxes.

We will also price match 100% of the difference on our site within 30 days of purchase. Qualifying decisions on Low Price Guarantee claims rest solely with US-Mattress. Low Price Guarantee does not apply to used, damaged, returned, open box and display merchandise, vendor Rollbacks and rebates, special purchases, promotional/doorbuster items, financing offers, clearance/discontinued, membership club or closeout prices.
Why did you choose this?
COMMENT: need by Rose L 1/24/2017
COMMENT: Tried out the Posturepedic hybrid kelburn elite at a brick & mortar store and really liked it. This is the same mattress under a different name for ~$200 less. by Courtney K 1/14/2017
COMMENT: Comfort and price! by Jonathan J 1/2/2017
COMMENT: Consumer reports by James N 11/5/2016
COMMENT: Tried it out at a local retailer and loved it, best price here. by Chris W 10/29/2016
COMMENT: I have this mattress in my other home, and find it extremely supportive and comfortable. by Judith K 6/24/2016
COMMENT: consumers report top rating by George m 5/29/2016
COMMENT: #1 Recommended by Consumer Reports by Mary K 4/10/2016
COMMENT: I have tried the mattress in a store and it was the one I was looking for. Firm, for the back but soft. The memory foam was not too "memory" which is the reason I choose it. by Alice P 11/9/2015
The Sealy Posturepedic Hybrid Series combines top quality gel memory foam with the support of an individually wrapped titanium alloy coil system. The result is a mattress line that provides cool, comfortable comfort, with deep down support. Hybrid Series mattresses give you the comfort you want, with the support your body needs.

King Sealy Posturepedic Hybrid Cobalt Firm Mattress
4 Stars based on 12 Review(s)
Oklahoma City, OK
2 Stars

No good for Side Sleeping
April 25, 2017
I'm a side sleeper with early-stage carpal tunnel and lingering neck/back issues from a car wreck. I need support with a little give. I did all my research - even tried in a box store and this seemed like the one. After 3 weeks I'm still waking multiple times a night in tremendous pain, often with numb limbs. I purchased a $300 gel memory foam topper to compensate but still no joy :( This bed is well made, but isn't for side sleepers with any sort of joint issues. Will be returning tomorrow.
Well made Sealy warranty and 120 day money-back guarantee Firm edge-to-edge : no feeling of rolling towards the middle, off the edge, or difficulties getting in / out of bed Prompt, courteous delivery
Not for side sleepers. Limb numbness. Joint, neck, and back pain. Not medium comfort - initial impact provides a sense of 'medium' comfort. It's quite easy to fall asleep. Somewhere around an hour the foam condenses and you're left with the coils underneath (all firm, and painful if you have joint issues)

, new jersey
2 Stars
I would recommend this item to a friend.

Hate it
March 28, 2017
If you like firm this is for you it has cooling feature my body frame is too small for this mattress . I have it for a week waking up achey and stiff neck and back aches . im small framed 95 pds feels like a board . Taking it back getting a plush otherwise its a good bed if you like really firm beds I personally do not .I had to get a cushion cover until i send it back just to stop tossing .
cool sleep firm
no side handles , too firm for small framed people

4 Stars
I would recommend this item to a friend.

Almost perfect
December 18, 2016
The only issue I had with this transaction was that it took too long to get the mattress. Otherwise the mattress is good. The delivery man were EXTREAMLY pleasant and efficient.
White Glove Delivery Phone communication with customer service.
To long between the order and delivery.

5 Stars
I would recommend this item to a friend.

Amazing Bed
December 14, 2016
It has only been 3 weeks but the Cobalt mattress is an amazingly comfortable bed. Our prior bed you heard and felt every turn, with this hybrid mattress that has all gone away. If you are coming from a spring mattress it takes a few days to adjust, but this bed is highly recommended for the price and comfort. Lastly we were concerned it would be too firm since we sleep on our sides and it's been great. There is an odor from the mattress that is pretty strong for a few weeks but it does fade away
Comfort Support Price point
Initial odor

Columbus, Indiana
5 Stars
I would recommend this item to a friend.

Awesome Service & Great Mattress
December 8, 2016
Its been very easy to work with US Mattress, on time delivery and this bed is amazing.
Firm Level 3 for back & stomach sleepers
Not good for side sleepers, you would have to choose a softer mattress.

5 Stars
I would recommend this item to a friend.

Great mattress
October 10, 2016
I have many back problems so having a comfortable mattress is very important for me. I tested a lot of different mattresses in many stores and found this to be the best match for me. It has really firm support with the softness of memory foam on top. I would compare this mattress to the Seta icomfort Advisor, with a better price tag. I would recomend anyone shopping for a new mattress to test as many as you can in the stores and buy your mattress here at to save a lot of money

steve vadala
charlotte nc
2 Stars
I would recommend this item to a friend.

hybrid Cobalt
August 3, 2016
This is a great mattress. Love it, I have had bad back problems and poor sleep for years. I sleep like a baby now.
great bed
horrible wait time

Irvine, CA
4 Stars
I would recommend this item to a friend.

Great mattress
June 16, 2016
Great service and great mattress. But I have lower back pain and I am learning that maybe memory foam is not good for lower back pain. I think I have to return it and get a firmer mattress, but this one was rated 4.5 on firmness.
Great service and great mattress
Memory foam not good for lower back pain. Need something firmer.

Breckenridge, Tx
5 Stars
I would recommend this item to a friend.

Very comfortable!
April 17, 2016
To start, the delivery team was awesome! The bed has been exactly what we expected. We are pleased

Denver, Colorado
5 Stars
I would recommend this item to a friend.

Great support, great company
March 24, 2016
Love the bed, support is excellent and little wave movement. Other reviews claiming sagging not apparent to me but have had the bed for only a month. US Mattress was great to work with, easy to order, shipped on time, delivered and set up quickly and cleanly and met their appointment for delivery right on time, all at a good price. Couldn't be happier with my purchase so far!
Good feel Great support Excellent service
None so far

5 Stars
I would recommend this item to a friend.

Great for back problems.
January 14, 2016
Bought this due to continued pain after back surgery and it has really helped a lot.
Firm but not too hard.

5 Stars
I would recommend this item to a friend.

Great service
November 22, 2015
Nothing but great service. I love my new bed. I sleep better and wake up feeling better. I would recommend US mattress to anybody looking for bed. Great experience.

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Sale Ends August 21st