Sealy Posturepedic Hybrid Cobalt Firm Mattress

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Sealy Posturepedic Hybrid Cobalt Firm Mattress

SKU# SLY-512270-TX

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  • Product Description

    Sealy Posturepedic Hybrid Premier mattress series

    Last Updated: May 15, 2018

    This mattress has been discontinued and is no longer for sale. The Sealy Posturepedic Hybrid Cobalt Firm Mattresses have been replaced with the Sealy Posturepedic Hybrid Performance Kelburn II Mattress.

    The New 2015 collection of Sealy Posturepedic hybrid mattresses starts with the Hybrid Cobalt Firm mattress. This mattress is the first in the collection to showcase some of the new improvements over the old line-up. To start the coil system in the Cobalt features individually encased coils to provide a better level of contoured support. This is called the Sealy Embrace Premier Coil System, which also features a “Zoned” design which increases the coil count in the center of the mattress right where the majority of your body weight will be. Combine this with the CoreSupport Center that adds additional gel memory foam over the middle third of the mattress you have a recipe for incredibly comfortable support. This is a firm mattress so it is ideal for back and stomach sleepers, with the gel memory foam in the top layers, some side sleepers may find the Cobalt very comfortable as well.

    The Cobalt firm mattress is topped by the ultra-stretch ForeverFlex Fabric which is very lightweight, durable, and is extremely soft to the touch. This fabric along with the new side panel fabric is much more breathable than the previous collection and allows for much more optimal airflow to help you keep cool the whole night through.

    Looking for the Sealy Posturepedic Hybrid Elite Kelburn Mattress?

    The Sealy Hybrid Cobalt Firm mattress differs from the Sealy Hybrid Elite Kelburn in two major ways. First, the design on the top quilt is different, and the price of the Hybrid Cobalt is much lower. We did a comparison of the specs of each mattress and all of the inside layers are the same down to the coil count. You can read our full comparison here

    Sealy Posturepedic Premier Hybrid Series

    Sealy Posturepedic Premier Hybrid mattresses are designed to combine the best of two worlds into a single quality mattress that addresses the pitfalls of both the innerspring system and gel memory foam mattresses. The new 2015 catalog really stepped up the game by including individually encased coils for better contoured support, a much more supportive edge, and extra coils and gel memory foam right where your body needs it most. Sealy Posturepedic Mattresses have been proudly made in the USA for over 60 years.

    Benefits of an Hybrid Mattress

    Sealy Hybrid Mattress Edge System

    3.5" SolidEdge Support System

    The full surface can be used with the reinforced border around the edge of the mattress. This also creates a solid seating surface on the edge of the bed.

    Sealy Hybrid Mattress Half and half construction

    Half Gel Foam & Half Springs

    With a hybrid mattress you get the best of both worlds: specially engineered springs on the body for full body support. Memory foam on top that supplies body-conforming comfort.

    Outlast material in quilt

    Outlast Material to Help Cool You

    Outlast material is 12 times more effective at removing excess heat. The result is a mattress that stays cooler while you fall asleep and helps you to fall asleep faster and stay asleep longer.

    Wrapped individual coil system

    Individually Wrapped Coils

    Encasing allows each coil to move independently. This targets support and reduces motion transfer. The encased coil system responds to the natural curves and alignment of your spine.

    gel memory foam

    Gel Memory Foam Top Layer

    The top half of the mattress has layers of gel memory foam that creates body-conforming comfort while reducing motion transfer. Many models have cooling material infused into the gel memory foam, to keep you comfortable during the night.

    Core Support Center

    Core Support Center

    Reinforced gel memory foam resides in the center third of the mattress. 20% more coils create exceptional support and durability where you are going to need it most.

    Built in the USA

    Built in the USA

    Sealy mattresses are designed and built in the USA. This allows them to create a quality product that is made right on your doorstep.

    Sealy Posturepedic Premier Hybrid Mattress Warranty

    Sealy protects all of its mattresses with a 10 year non-prorated limited manufacturer’s warranty that protects your purchase from defects in material and workmanship. You can read the full warranty for yourself here or give us a call at 888-996-9890 with any questions.

    Technical Specs

    Important Info

    • Delivered within 5-10 business days
    • Medium Firm - Supportive, but comfortable without being too soft.
    • Ideal for back sleepers and stomach sleepers
    • Hybrid Cobalt Firm Mattress Review

    Mattress Layers

    • Premiem ForeverFlex Stretch Fabric
    • 1" OptiCool 3-Zone Gel Memory Foam
    • 2" SuperSoft Foam
    • CoreSupport Center – Additional gel memory foam across the middle 1/3 of the mattress + PCM

    Additional Support

    • Zoned Sealy Embrace PLUS Encased Coil System
    • Coil Gauge: 14
    • Wrapped with the SolidEdge HD Premier Edge System
    • 3" Foam Encasement Wrap

    Coil Counts

    • Twin XL - 525
    • Full - 726
    • Queen - 875
    • King - 1120
    • Cal King - 1110

    Foundation Information

    Weights & Dimensions

    • Mattress Height: 12.5”
    • Standard Box Mattress Set Height: 21.5"
    • Low Profile Box Mattress Set Height: 18"
    • Twin XL – 38”W x 80”L – 60 lbs
    • Full - 54”W x 75”L - 79 lbs
    • Queen – 60”W x 80”L - 95 lbs
    • King - 76”W x 80”L - 120 lbs
    • Cal King 72”W x 84”L - 120lbs

    Sealy Hybrid Comparison Chart

    Sealy Hybrid Comparison Chart

    Important Info Regarding the Accessory Packages

    When you purchase an accessory package that includes Optimum pillows, the number and size of the pillows will depend on which size of mattress you have chosen. Below is a breakdown of how many/what size pillows come with each size mattress.

    • Twin XL - 1 Standard Size Pillow
    • Full - 2 Standard Size Pillows
    • Queen - 2 Queen Size Pillows
    • King/Cal King - 2 King Size Pillows


    Bed Frames

    When you purchase a bed frame with your optimum mattress, you will receive and adjustable metal frame that can accommodate a Twin/Full or Queen size mattress. If you order a king size, you will receive a larger frame that can accommodate a king size or cal king size mattress set. This will ship separately from your mattress order.

    Mattress Protectors

    If you add the Chill+ Mattress Protector, you will receive the mattress protector in the appropriate size. This is shipped separately from your mattress so it may arrive before/after your mattress is delivered.

    Customer Product Reviews

  • Product Videos

    • Sealy Posturepedic Hybrid Cobalt Firm Mattress Features
      Top mattress brands can be found on, so after vi...

    Sealy Posturepedic Hybrid Cobalt Firm Mattress Features

    Top mattress brands can be found on, so after viewing this video head over to learn more about the functionality of the Sealy Posturepedic Hybrid Cobalt Firm Mattress.:
  • Warranty Information

    101 Night Love your Mattress Guarantee

    Choosing the right mattress is an important decision. That is why we include the 101 Night “Love Your Mattress” Guarantee with every Optimum and Hybrid mattress purchase. Give your body 30 nights to adjust to the comfort level and support of your new mattress, after 30 nights you have up until the 101st day from the original delivery date to take advantage of this service. This is a one-time courtesy service that allows you to exchange your mattress for another of equal or greater value for a one-time service fee $129. If you exchange for a higher priced mattress the difference in price will need to be paid before shipment.

    110% Price Match Guarantee

    We are so confident in our prices, that if you find a mattress set we sell advertised at a lower price somewhere else give us a call or email us with the information and we will beat it by 110% of the difference. This guarantee does not apply to open box, display merchandise, special purchases, promo offers, used, damaged or returned products. Qualifying decisions on our price match guarantee rest solely with

    Full Warranty Information

    Buy with Confidence at

    Your new Sealy mattress set comes with a factory warranty detailed below. If you ever have a warranty question, call us toll free at 1 888 996 9890, and we will be happy to help you. Warranty service coverage is everywhere in all 50 states!

    Length of Warranty Coverage

    Your warranty protects you from the day you purchase your sleep set and continues according to the "Warranty Schedule" found on the card with the bed. In the event that Sealy repairs or replaces your sleep set, this warranty continues your protection from the original date of purchase.

    This Warranty Covers the Following Mattress Items During Normal Wear:

    • Manufacturer defects in materials or workmanship
    • Body indentations of 1 1/2" or greater.

    This Warranty Covers the Following Box Spring Items During Normal Wear:

    • Manufacturer defects in materials or workmanship
    • Squeaks, rattles or noises.

    Items not Covered:

    • Mattress fabric
    • Normal body impression(s) of 1 1/2" or less in all sleeping areas
    • Firmness preference of the product (instead, you have's 101 Night “Love Your Mattress” Guarantee.)
    • Bed height
    • Merchandise sold "as-is", "distressed" or "floor model" ( only sells new products. Unless otherwise EXPLICITLY stated in the product listing)
    • Claims submitted outside the 50 United States.
    • Stains, Soilage or Burns
    • Inadequate support from weak or improper box spring or foundation(proper performance of the Sealy mattress depends on using a firm, supportive, rigid, non-yielding foundation, Sealy Posturepedics require a working flexible box spring) or improper frame (queen, California king, and king size must have a required sufficient center support.) Please note: offers the right, proper frame with every mattress set - so you will have a frame that meets Sealy factory specs.
    • Bent border wires
    • Transportation or removal costs of product
    • Sealy product that has a manufacturing defect and is stained or soiled. For health and safety reasons, Sealy may not be able to inspect these products to assess whether covered by the warranty, in which case, Sealy reserves the right to deny warranty coverage

    Extending the Comfort and Support Life of your Mattress Set

    • Do use a firm, supportive rigid, non-yielding foundation or semi-flex box spring(preferably, a matching foundation or box spring.) An older box or foundation unit may not provide sufficient support. The mattress may appear to have impressions when the issue may be due to a non-supportive foundation or box spring.
    • For queen, California King, and king size sets, use a bed frame that supports head, foot and sides as well as having a rigid center support. For any frame that does not have a metal center support, there must be at least 5 hardwood slats (1 x 4's). By not providing a sufficient supportive frame, damage can occur to the product and the warranty will be invalid. ( offers the right, proper frame with every mattress set - so you will have a frame that meets Sealy factory specs.)
    • Use a quilted mattress protector on the mattress at all times to avoid stains. Soilage can negate the warranty. Many mattress protectors come with their own 10 year warranty when purchased with a Sealy mattress. View our Selection.
    • Do carton the mattress when moving it and position on its side.
    • Sealy recommends that you do not remove the white cloth law labels or the mattress trade labels. These labels serve as a means of identification to establish the warranty rights.
    • Do not bend or fold, stand or jump on product as damage can occur.
    • Do not use dry cleaning fluid on the mattress or any liquid cleaning fluids; it can/will damage some of the material.
    • Do not smoke in bed or place product near open flame (such as candles, etc.) The mattress is manufactured, as required by federal law, to resist ignition from cigarettes but not open flame.

    If A Warranty Problem Occurs

    If you do discover a defect in your new Sealy mattress or box spring, simply contact us at 1-888-996-9890 for service nationwide.

    If a defect occurs during the warranty period (which is described in the Warranty Schedule), Sealy will repair or replace (at its option) the defective mattress and/or box spring within a reasonable period of time.

    In Order for this Limited Warranty to be Valid, You must meet all of the following:

    • Be the original consumer purchaser, and have purchased the mattress set from an authorized dealer ( is an authorized dealer) in the United States;
    • Provide a copy of the original store receipt, or other proof of date, place of purchase and purchase price; and
    • Provide the law label from the defective product. Sealy reserves the right to substitute comparable materials or models and does not guarantee that the replacement will match the existing piece. The warranty does not offer compensation for consequential damages or monetary refunds.

    If the product is not defective and has been subjected to soilage, Sealy reserves the right to refuse warranty due to health and safety reasons. When a mattress is soiled it can void the warranty.

    Exclusive Remedy/Other Limitations:

    See warranty materials and information included with product for full details of Sealy warranty policies.

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  • Other Details

    Mattress Height: 13"
    Twin XL Dimensions: 38" x 80" Weight: 65 lbs
    Full Dimensions: 54" x 75" Weight: 85 lbs
    Queen Dimensions: 60" x 80" Weight: 103 lbs
    King Dimensions: 76" x 80" Weight: 130 lbs
    Cal King Dimensions: 72" x 84" Weight: 130lbs
    Comfort Level: Firm
    Coil System: Zoned Sealy Embrace Premier Coil
    Coil Guage: 14
    Edge System: SolidEdge HD Premier , 3" Fully Encased Foam
    Coil Counts: Twin XL - 525 | Full - 726 | Queen - 875 | King - 1120 | Cal King - 1110
    Made In: USA
    Maintenence: No Flip, No Rotate
    Warranty: 10 Year Warranty Against Manufacturers Defects
    Features: Adjustable Bed Friendly
    Size: Twin XL
    Size: Full
    Size: Queen
    Size: King
    Size: California King