Serta Mattress


Cooling gel foam combined with individually wrapped coils for comfortable support night after night.

75" long x 38" wide x 12" high

Firm and supportive; Ideal for stomach or back sleepers

Based on your selections

Serta Serene Sky Firm

Cooling support with a firm feel, and an additional 1" of Cool Twist® Gel Foam.

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  • Overview
  • Details
  • Shipping & returns



Durable, consistent support edge to edge for any sleep position

Pressure Relief

Contouring, cradling support


Cooling gel swirled directly into breathable foam promotes airflow and heat dissipation

Motion Control

Designed to help reduce motion transfer

Made for

Best for stomach and back sleepers

Materials & Construction
  • The Serene Sky provides the right amount of comfort for relaxing slumber, night after night. This quality mattress combines Cool Twist® Gel Foam, designed to promote airflow and heat dissipation, with the contouring and cradling support of individually wrapped coils so that you experience blissful sleep.
  • With an additional 1” of cooling gel swirled directly into breathable foam designed to promote airflow and heat dissipation
  • Up to 825 individually wrapped coils provide consistent, durable support, while an extra-deep foam rail helps reduce edge roll-off and extend the sleep surface
  • Pillow Soft Aire®, an extra-soft foam, gently contours the body for enhanced cushioning support and promotes airflow through a unique rippling design
  • Made in the USA
  • Law Label Lookup Model Number: 500702611
Responsibly Crafted
  • CertiPUR-US® Certified means our foam was tested for and is free from harmful chemicals and gasses
  • To protect your mattress from stains and spills, we highly recommend using a mattress protector; This will also help with the overall health and lifespan of your mattress.
  • We do not recommend applying liquids to the product; Applying liquids may stain the fabric and make the soiled area worse; Moisture or chemicals applied directly to the mattress can cause premature breakdown of the foam and damage the product.
  • We suggest applying baking soda to the soiled area, let stand about 15 minutes, vacuum, and repeat as needed; Air the product out as much as possible.
  • Compatible with most frames, including: traditional frames, box springs, platform frames, slatted frames, bunky boards, and adjustable frames.

We will ship your order using the fastest, safest, and most reliable method possible. When ordering directly through, most of our items will arrive to your home in 2-4 weeks. Typically, within 1 week of your order being placed, our delivery partner, RXO Logistics, will contact you to schedule out a delivery date and time based on when they expect to receive the product(s). Please note, we are not shipping to Alaska and Hawaii at this time.


You should be able to rely on the quality of your rest night after night. That is why we offer a 10-year limited warranty that covers manufacturing and workmanship defects. If you do notice anything out of the ordinary, simply email us or call us at 1-888-557-3782 and we’ll work with you to find a solution.


Any purchase directly from is covered under our 120-Day In-Home Trial. Starting on the day of delivery, we recommend sleeping on your new mattress for a minimum of 30 days to allow your body to adjust. In the event you decide this mattress isn't right for you, and you’re within the 120-Day In-Home Trial, contact us by phone or e-mail and we can coordinate a return. Please note that the 120-Day In-Home Trial applies only to purchases made on

Why buy Serta online?


Experience the mattress in your home for up to 120 days. If you’re not completely satisfied, you can exchange or return it for a refund.

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You should be able to rely on the quality of your rest night after night. That’s why every Serta® mattress is backed by Serta’s 10-year limited warranty.

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All mattresses and foundations ship free and feature free returns when you order directly from

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All Serta mattresses are designed and assembled in the USA, leveraging our 85 years of manufacturing expertise.

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Rest easy knowing Serta uses only CertiPUR-US® Certified Polyurethane Foam.

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In Their Words

Very happy with my new mattress. I am impressed with the comfort this provides. I sleep more peaceful and well rested when I wake up. I love that i never feel to hot or cold while sleeping.

- CheleLee

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Verified Review

I love this mattress it is comfy great on the back I get a great nite sleep I don't wake up feeling like I have been hit by a Mack truck

- Janice1968

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Verified Review

Very comfortable. Not too soft nor too firm. I haven't gotten up sore from sleeping on the mattress. Feels like it mold in my body. If that makes sense.

- kathy81

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Verified Review

This bed is the most comfortable bed I have ever slept on. I actually wake up with no back pain and sleep through the night!

- Kyla

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Verified Review

Family, woman on the left, young son in the middle and man on the right laying on a mattress asleep

Try in stores

Want to try a Serta mattress before you commit? Use our Store Locator and enter your zip code to locate one of our authorized Serta retailers. Visit a store and take a rest to decide for yourself.

Mattress FAQs

Do the Serta mattresses contain coils?

Yes! All of the Serta mattresses will contain Serta’s individually wrapped coil system in order to provide a great amount of contouring and cradling support.

The coil base is surrounded by Serta’s BestEdge Foam Encasement technology which provides an extra-deep foam rail to help reduce edge roll-off and extend the sleep surface.

How thick are the Serta mattresses?

The Serta mattresses will vary in height depending on the comfort model. The Classic Top Plush will be 11 inches, while the Classic Top Firm and Plush Pillow Top models will be 12 inches in height.

All three models are considered to be standard size, and you can use standard size sheets with these mattresses.

Can the Serta mattresses be flipped?

No, the Serta mattresses were not intended to be flipped. These mattresses have a dedicated top and bottom so flipping them is not required or recommended.

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Serta Mattress




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