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4.5 | 92 Reviews

Serene Sky Firm Mattress - Twin XL

Serta

Features

  • 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

Quick Specs

  • Brand: SERTA
  • Type: Tight Top
  • Width: 39"
  • Height: 12"
  • Depth: 80"

See More

 
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.

Features

  • 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
Brand Serta
UPC 747935880788
Computed Mattress Size Twin XL
Country of Manufacture USA
Computed Product Type One Sided Mattress
Family Name ,
Dealer Line National Line
Product Depth (in) 80
Product Height (in) 12
Product Width (in) 38
Shipping Depth (in) 80
Shipping Height (in) 12
Shipping Width (in) 38
Product Weight (lb) 47,
Shipping Weight (lb) 47

Quick Specs


  • Manufacturer

  • Brand: SERTA

  • Appearance

  • Type: Tight Top

  • Dimensions

  • Width: 39"
  • Height: 12"
  • Depth: 80"

Professional delivery and installation is available for every product we sell. We would be happy to coordinate delivery and installation for you.

Extended warranties are usually very inexpensive and can save you thousands in the future. It's simple and inexpensive to purchase extended warranties and one of the smartest ways to protect your investment.

Mattresses can be large, heavy and expensive. You probably don't have the special tools or expertise needed to fix them in a crisis. If you can spare a few thousand dollars without batting an eyelash for new bedding should they break tomorrow, don't buy a warranty. But if you're like most of us, protect yourself by purchasing inexpensive extended warranties when you buy a new product and save yourself big money in the long run.

4.5 out of 5

89% of reviewers recommend this product.

4 Stars

So Far So Good

Marc A 1/30/2025

We are one day into using it, but so far we are very happy.
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Shockingly Surprised

Christofer C 1/20/2025

I've never been a bed person, until I got this mattress. My fur baby & I can sleep through anything. It's too good that first night sleeping on & I was almost late to work the next morning. #amAAAzing #comfy
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

As expected

Marco A 1/16/2025

Firm and comfortable
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Just right

Ronald A 1/10/2025

We just recently purchased, but after laying on it and testing it has just the right comfort and support for my back compared to other very high priced mattress options.
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Great

Thomas J 12/15/2024

Comfortable and supportive.
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

👍

Adriana P 11/28/2024

So far great choice
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

firm and cozy

Geri T 11/13/2024

Firm for my back but yet very comfy
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Serta

Dolores D 11/11/2024

Originally posted on www.serta.com

Yes, I recommend this product

4 Stars

Very happy!

Patricia S 11/2/2024

So happy with mattress I bought 3!
Originally posted on www.serta.com

Yes, I recommend this product

4 Stars

too new to tell

Robert S 10/26/2024

but so far comfortable
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

N/A

Annabelle G 8/17/2024

Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Really comfortable bed

Jose a M 7/19/2024

Very firm and comfortable
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Great mattress

Bonnie K 7/19/2024

Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Excellent service

David S 6/28/2024

From the salesman at the Mattress Firm store to the delivery men, the service has been first rate. The mattreess was delivered on time as promised. Now I get to enjoy my new comfortable bed. Thanks guys, keep up the great work.
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Daniel Justin 4/29/2024

My grandsons loved the mattress.
Originally posted on www.serta.com

Yes, I recommend this product

4 Stars

Good buy

LABS 4/2/2024

The mattress is good. It could have been a tad firmer. Still a good mattress at a good price.
Originally posted on www.serta.com

Yes, I recommend this product

Comfort

 

Quality

 

Value

 
5 Stars

Thank-you!!

PJB70 3/27/2024

Between the mattress and the foundation, I have had the best nights sleep in over a decade!! And I'm not cranky anymore!!
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Great Mattress

Satisfied Customer 3/13/2024

Feels great and was delivered on the expected date!
Originally posted on www.serta.com

Yes, I recommend this product

Comfort

 

Quality

 

Value

 
5 Stars

Love this mattress

TJWN 3/9/2024

My last Serta mattress lasted 30 yrs! This new one has stopped my hip and shoulder pain. Fast shipping and excellent price.
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Supportive and Soft

Erica J 3/2/2024

Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Best nights rest

Ottawa J 2/24/2024

Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Great mattress

Justin M 2/24/2024

Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Just got it and i looks great

Hao G 2/24/2024

Originally posted on www.serta.com

Yes, I recommend this product

1 Stars

No good at all

Plush pillow top standard 2/8/2024

Horrible mattress sinks in the very first week it's pillow top so I turned it around to see if that helps nope not good at all
Originally posted on www.serta.com

No, I do not recommend this product

Comfort

 

Quality

 

Value

 
5 Stars

Annettie 1/27/2024

Love the mattress. We have had a few matters in two years. This is the best sleep I have had in a long time.
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Brand loyal from now on!

KateR 1/16/2024

I bought this mattress for my daughter for an early Christmas present and it is amazing! My goal is to buy everyone in the family one. Best purchase ever and I am not exaggerating. The delivery was easy and efficient also!
Originally posted on www.serta.com

Yes, I recommend this product

Comfort

 

Quality

 

Value

 
5 Stars

Great matress

Courtney W 1/11/2024

Matress is good for my back me and my boyfriend love it
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Excellent!

Ava18 1/8/2024

Love this mattress! All the mattresses in my house are serta brand. I got this one firm with the plush top and it is so comfortable! Very happy with this purchase. I'm pregnant and have back issues during and just normal so I am picky about mattresses. I love sleeping on this bed, I have no back or shoulder pain when I wake up. Highly recommend!
Originally posted on www.serta.com

Yes, I recommend this product

Comfort

 

Quality

 

Value

 
4 Stars

So far so good

Yusuke S 12/20/2023

Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Alo's

Alondra N 12/20/2023

Good
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

great mattress

Kenneth K 12/16/2023

Originally posted on www.serta.com

Yes, I recommend this product

3 Stars

Good but not as firm as I wanted

Traveling man 11/25/2023

I bought this a month back and was hoping would be very firm. It is not. Quality good - but I need a very firm mattress.
Originally posted on www.serta.com

No, I do not recommend this product

4 Stars

A great nights sleep

Tasha P 11/8/2023

This mattress is very comfortable. Not too firm, not too soft. The corners seem in sink a little bit when sitting on them but they snap back to shape.
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Gfred 11/4/2023

Without question great quality. I sleep in so comfortably these days!
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Great Value

LisaMN 11/2/2023

I have only had this one month. Excellent so far!!
Originally posted on www.serta.com

Yes, I recommend this product

1 Stars

Nice Mattress but the worst experience

Never buying from Serta a 10/24/2023

Bad overall experience. Was forced to re schedule 15 times due to extremely poor communication between Serta and delivery group. Also, the Serta customer experience team would average a week to respond to concerns or questions.
Originally posted on www.serta.com

No, I do not recommend this product

Comfort

 

Quality

 

Value

 
1 Stars

Not Good

Do Not Have 10/20/2023

Sorry To Say, I Thought I Was Getting A Softer Mattress Than I Had (Hard) But This One Seems Just As Hard And I Still Wake Up With A Sore Neck & Aching Back. That's Where We Are At.
Originally posted on www.serta.com

No, I do not recommend this product

Comfort

 

Quality

 

Value

 
5 Stars

So comfortable

Dee Th 10/20/2023

This is our second serta mattress. Perfect! Very comfortable yet firm
Originally posted on www.serta.com

Yes, I recommend this product

Comfort

 

Quality

 

Value

 
3 Stars

Good

Sammy420 9/25/2023

I bought this maybe a month ago and it's very comfortable but the mattress cover kinda bubbles up and i don't think it's supposed to do that.
Originally posted on www.serta.com

Yes, I recommend this product

Comfort

 

Quality

 

Value

 
5 Stars

Great matress!

Cafe Racer 287 9/24/2023

I searched for mattresses for almost a year and I'm glad I came back to Serta, from the buying experience to shipping everything was a breeze. The mattress and foundation are well made and give me a great nights sleep.
Originally posted on www.serta.com

Yes, I recommend this product

Comfort

 

Quality

 

Value

 
5 Stars

This one is a keeper

CCK1 9/19/2023

My husband and I had been shopping for a new matress to replace our 22 year old mattress for several months. Truthfully, our old mattress was still quite comfortable despite its age but I thought it was time to replace it. Prior to purchashing our Serta mattress, we had purchased 3 other mattresses all of which were returned for various reasons, They were either too firm, lacked edge support, sagged after just one week of use, or had excessive motion transfer. We had to keep bringing our old mattress back into the bedroom. Then we purchased this Serta plush pillow top mattress. Not only did it cost significanttly less than the others, it had all the qualities the others lacked. It had the perfect amount of firmness/plushness, strong edge support and virtually no motion transfer. Our only issue (more my husband's than mine) was that the mattress was advertised as measuring 79.5 inches in length and we measured it at 79 but we have learnt that 79 inches is the length of most mattresses, including our old one which had been our gold standard. All in all, we are very happy with our purchase.
Originally posted on www.serta.com

Yes, I recommend this product

Comfort

 

Quality

 

Value

 
5 Stars

Great sleep

DorchesterPapi 9/16/2023

My mattress was delivered about a 2 weeks ago and it's such a great sleep. I would recommend Serta for anyone looking for a great mattress.
Originally posted on www.serta.com

Yes, I recommend this product

Comfort

 

Quality

 

Value

 
5 Stars

New mattress

Donna B 9/11/2023

Originally posted on www.serta.com

Yes, I recommend this product

4 Stars

comfy but soft

James O 9/10/2023

Originally posted on www.serta.com

Yes, I recommend this product

4 Stars

Guest room

Jennifer B 8/21/2023

Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Very comfortable

Steffani W 8/15/2023

Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

To soon to tell

Linda F 8/11/2023

Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Tried it out and fell asleep

Exequiel E 8/9/2023

I put the mattress on the bed frame and laid down just to try it out and i fell asleep. Very comfortable bed and worth every single penny
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Serta Mattress

Ilyn J 7/23/2023

I just received my Serta mattress. I have ordered the firm one.
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Excellent firm support

Macwolf 7/22/2023

Have had over a month and have had some of my best nights sleep ever.
Originally posted on www.serta.com

Yes, I recommend this product

Comfort

 

Quality

 

Value