Skip disability assistance statement.

Welcome to our website! As we have the ability to list over one million items on our website (our selection changes all of the time), it is not feasible for a company our size to record and playback the descriptions on every item on our website. However, if you have a disability we are here to help you. Please call our disability services phone line at 313-402-1568 during regular business hours and one of our kind and friendly personal shoppers will help you navigate through our website, help conduct advanced searches, help you choose the item you are looking for with the specifications you are seeking, read you the specifications of any item and consult with you about the products themselves. There is no charge for the help of this personal shopper for anyone with a disability. Finally, your personal shopper will explain our Privacy Policy and Terms of Service, and help you place an order if you so desire.

4.6 | 1636 Reviews

Perfect Sleeper Cobalt Calm 14.5" Medium Pillow Top Mattress -Twin XL

Perfect Sleeper

Features

  • Cool Twist® Gel Foam - Cooling gel is swirled directly into a breathable foam designed to promote airflow and heat dissipation.
  • Cool Twist® Gel Memory Foam This unique design features cooling gel swirled into premium memory foam. This breathable memory foam helps enhance airflow and heat dissipation for a feeling that can only be described as a cool, contouring type of comfort.
  • PillowSoft® Aire Soft foam provides enhanced cushioning for exceptional comfort and promotes airflow through its unique, gently rippling design.
  • 3 Zoned Coil Design - This 850-coil density system offers three support zones with targeted support for your lower back and hips and cradled comfort everywhere else.

Quick Specs

  • Brand: SERTA
  • Line: Perfect Sleeper
  • Type: Pillow Top
  • Width: 38"
  • Height: 14.5"
  • Depth: 79.5"

See More

 

Accessories

Accessory Image

Twin/Full/ Queen Bedframe

Twin/ Full/ Queen Bed frame with rug rollers

$59

See Details
Accessory Image

Pr1me(R) Smooth Mattress Protector Twin XL

The Pr1me® Smooth mattress protector features a hypoallergenic and a breathable, smooth fabric surface that sleeps comfortably and will not change the feel of the mattress. It also features the laboratory-certified H2Pro®liquid-proof membrane which creates a quiet, and breathable barrier against allergens and dust mites while allowing for airflow. The universal fit elastic ensures a secure fit for mattress depths of 6"-22". Pillow protectors are also available to create a healthy sleeping environment.

$49

See Details
Featuring a 3 zoned coil design, this mattress offers pressure relief and support where you need it, with a Cool Twist® Gel Memory Foam that contours to your body-with upgrades available with more cooling layers and support.

Features

  • Cool Twist® Gel Foam - Cooling gel is swirled directly into a breathable foam designed to promote airflow and heat dissipation.
  • Cool Twist® Gel Memory Foam This unique design features cooling gel swirled into premium memory foam. This breathable memory foam helps enhance airflow and heat dissipation for a feeling that can only be described as a cool, contouring type of comfort.
  • PillowSoft® Aire Soft foam provides enhanced cushioning for exceptional comfort and promotes airflow through its unique, gently rippling design.
  • 3 Zoned Coil Design - This 850-coil density system offers three support zones with targeted support for your lower back and hips and cradled comfort everywhere else.
  • Anti-Microbial Technology - Our anti-microbial mattress technology will keep your mattress fresh and clean from odor-causing bacteria.
  • CertiPUR
  • Designed and Built in USA
  • Adjustable Base Compatible
  • 10 Year Warranty
  • Your new mattress may initially feel firmer than expected. Please allow up to 60 days to acclimate to your new mattress as it naturally adjusts to contour, comfort, and support you best
  • Perfect balance of soft and firm with a pillowy, cloud-like top layer
  • Premium memory foam is temperature-sensitive; it may feel firmer in cooler temperatures and softer in warmer ones. For your preferred comfort, please allow several hours for your memory foam mattress to adjust to the room's temperature
Brand Serta
Manufacturer Name Serta Simmons Bedding LLC
UPC 747935948334
Computed Mattress Size Twin XL
Country of Manufacture USA
Assembled in USA? Yes
Computed Product Type One Sided Mattress
Product Category Mattress
Family Name Perfect Sleeper
SubFamily Name Cobalt Calm
Mattress Top Type Pillow Top
Mattress Type Innerspring
Product Type Mattress
Year of Launch 2023
Dealer Line National Line
Layer 1 Material PerfectPure Fiber
Layer 1 Thickness (in) 1
Layer 2 Material PillowSoft Aire
Layer 2 Thickness (in) 1
Layer 3 Material PillowSoft Foam
Layer 3 Thickness (in) 0.5
Layer 4 Material Cushion Quilt Foam
Layer 4 Thickness (in) 2
Layer 5 Material Cool Twist Gel Memory Foam
Layer 5 Thickness (in) 1
Layer 6 Material Support Foam
Layer 6 Thickness (in) 1
Layer 7 Material 850 3 Zoned Coil System
Layer 7 Thickness (in) 8
Layer 8 Material Balanced Support Pad
Layer 8 Thickness (in) 1
Product Depth (in) 79.5
Product Height (in) 14.5
Product Width (in) 38
Shipping Depth (in) 80
Shipping Height (in) 14.5
Shipping Width (in) 40
Product Weight (lb) 52.27
Shipping Weight (lb) 53
Edge Support Technology Name Best Edge® Foam Encasement
Antimicrobial? Yes
Breathable Construction? Yes
Coil Count 372
Coil Density 539
Coil Type Pocketed Coil
Coil Gauge 14.75
Cooling Technology? Phase change material
Edge Support? Yes
Foam Infusion? None
Handles Included? Yes
Hypoallergenic? No
Is Mattress 2 Sided? No
Latex Free? No
Low Motion Transfer? Yes
Lumbar Support Yes
Mattress Comfort Level Medium
Mattress Cover Design Floral
Mattress Cover Stitch Design Floral
Memory Foam? Yes
Moisture-Wicking? Yes
Natural Fibers? No
Pillow Top? Yes
Product Accent Color Light Blue
Product Cubes 27.19
Quilted Cover? Yes
Reinforced Center? Yes
Side Color Dark Blue
Top Cover Color Dark Blue
Zipper Cover Machine Washable? No
Zipper Cover? No
Product Warranty Length 10

Quick Specs


  • Manufacturer

  • Brand: SERTA
  • Line: Perfect Sleeper

  • Appearance

  • Type: Pillow Top

  • Dimensions

  • Width: 38"
  • Height: 14.5"
  • Depth: 79.5"

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.

4.6 out of 5

90% of reviewers recommend this product.

4 Stars

New Mattress

Sherry H 5/1/2026

Seems comfortable. Haven't used yet.
Originally posted on www.serta.com

Yes, I recommend this product

4 Stars

Mattress April 2026

Homer C 4/30/2026

Comfortable so far.
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Very relaxing bed

Veronica R 4/29/2026

Extremely comfy!
Originally posted on www.serta.com

Yes, I recommend this product

3 Stars

Too soft

Jacqueline M 4/28/2026

Wish it was firmer, not happy at all with it.
Originally posted on www.serta.com

No, I do not recommend this product

5 Stars

Pure comfort

Eileen A 4/25/2026

The mattress offers support, but not overly firm.
Originally posted on www.serta.com

Yes, I recommend this product

3 Stars

Needs a topper

Laurie R 4/24/2026

Comfy but I still had to put a mattress topper on top
Originally posted on www.serta.com

No, I do not recommend this product

5 Stars

Nice

Sheryl H 4/24/2026

Love ot cant believe I put off getting a new mattress. ABC Warehouse had a price I couldn't refuse
Originally posted on www.serta.com

Yes, I recommend this product

3 Stars

Too soft

Jacqueline M 4/24/2026

I find it not firm enough for me at all, looking for new mattress
Originally posted on www.serta.com

No, I do not recommend this product

4 Stars

A new sleep

Andrea D 4/23/2026

Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Utopia

Douglas B 4/22/2026

Relaxing & therapeutic for all especially seniors. Thanks,
Originally posted on www.serta.com

Yes, I recommend this product

3 Stars

Good night sleep. FINALLY

Kathleen B 4/22/2026

Good night sleep
Originally posted on www.serta.com

No, I do not recommend this product

5 Stars

Greag

Kailey D 4/20/2026

Great sleep so far
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Love this mattress

Amy C 4/19/2026

Super comfortable
Originally posted on www.serta.com

Yes, I recommend this product

4 Stars

Plush Mattress set

Brenda S 4/19/2026

Comfy and supportive mattress. Great for a restful sleep.
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

supportive

Janice B 4/18/2026

It's only been two nights, but I have slept longer and better than I have in a long while and awakened with far less back pain. So far so good.
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Love Serta!

Carrie B 4/17/2026

Comfortable & Affordable!
Originally posted on www.serta.com

Yes, I recommend this product

3 Stars

Not happy

Jacqueline M 4/16/2026

I feel my mattress is not firm enough, I haven't gotten a full nights sleep yet!
Originally posted on www.serta.com

No, I do not recommend this product

2 Stars

Comfty plush mattress

Carmen S 4/16/2026

It's very comfy however we've only had for one month and can already feel the pillow top sinking in
Originally posted on www.serta.com

No, I do not recommend this product

3 Stars

Pending

Sharon W 4/15/2026

Only slept one night so far
Originally posted on www.serta.com

No, I do not recommend this product

5 Stars

Good Quality

Edward S 4/14/2026

This mattress is supposed to be for back sleepers and side sleepers. It's only a back sleeper to me. I weigh 340 and it's supports me very well.
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

All in the Family

Rita rose G 4/12/2026

Second Serta Perfect Sleeper Cobalt Calm extra firm mattress-box spring set we've purchased in less than two years based on quality construction and restful sleep.
Originally posted on www.serta.com

Yes, I recommend this product

4 Stars

Guest room mattress

Richard A 4/11/2026

Seems comfortable. Waiting on our guests for their input
Originally posted on www.serta.com

Yes, I recommend this product

4 Stars

Gh

Glenn H 4/11/2026

Firmer than I expected
Originally posted on www.serta.com

Yes, I recommend this product

1 Stars

Terrible mattress

Brian B 4/10/2026

Absolute worst mattress I've ever bought in 47 years.
Originally posted on www.serta.com

No, I do not recommend this product

5 Stars

Great Sleep First Night

Howard W 4/9/2026

I thought that I would have to get use to the new mattress but I was pleasantly surprised I got when a really good sleep the first nights sleep.
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Son's new mattress

Tom B 4/4/2026

My son is 6'2" and needed an extra long mattress. He like the blue lagoon nights because it was soft. He can stretch out now!
Originally posted on www.serta.com

Yes, I recommend this product

4 Stars

Lopsided?

Penelope W 4/3/2026

I do love the firmness but when I installed it on my perfectly straight box springs, the mattress was higher on the end.
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

super comfy

Luz R 4/2/2026

love it very much and its so soft and comfortable
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Nice mattress

Joan D 3/31/2026

Good support. Looks great!
Originally posted on www.serta.com

Yes, I recommend this product

3 Stars

Too firm

Betsy C 3/29/2026

Most expensive mattress we've bought I did tons of research before buying and this one had great reviews. Tried it for several mos and can't get used to it. Just bought a different one we like much better so put this one in our spare bedroom
Originally posted on www.serta.com

No, I do not recommend this product

4 Stars

Comfy

Casey G 3/29/2026

Took a few days to break in but then very comfortable
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Cobalt calm mattress Med

Clarence B 3/29/2026

Just assemble the frames etc. Will be sleeping on it 3/30/26 or 3/31/26. We will keep you posted after a month pass
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

My lower back doesn't hurt.

Keisuke I 3/29/2026

With my previous mattress, I experienced pain in a single spot in my lower back regardless of my sleeping position. This mattress, however, provides excellent support for my entire body, ensuring that weight does not concentrate on any one point. I am able to sleep very well.
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Beautiful

Sylvia W 3/28/2026

Comfy and supportive
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Very comfortable

Dennis J 3/28/2026

Comphy and relaxing
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Best Ever

Donna S 3/27/2026

This is hands down the best mattress ever!!! So very happy with my purchase!!!
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Love Serta comfort

Sandra E 3/26/2026

I purchased the firm and it is so very comfortable for me. Love the comfort and quality
Originally posted on www.serta.com

Yes, I recommend this product

4 Stars

Still thinking it over

Brandi H 3/25/2026

It is comfy but jury is still out on this one. It is a nice thick mattress. It has helped the pressure on̈ my hip.
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

my bed

Bradley P 3/24/2026

perfect fit for me . Bradley
Originally posted on www.serta.com

Yes, I recommend this product

3 Stars

Mattress review

Laurel T 3/24/2026

Not really happy with it it seems to be softer in the middle when you find yourself in the middle its hard to get out of bed.
Originally posted on www.serta.com

No, I do not recommend this product

4 Stars

Always love Serta !!

Anne K 3/23/2026

Bought for guess room. Love the look but no feedback yet.
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Awesome Mattress

Bria T 3/23/2026

Love this!! No more back pain
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Very nice & well made

Sue M 3/20/2026

Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Just got it.

Frank P 3/20/2026

Originally posted on www.serta.com

Yes, I recommend this product

4 Stars

Mattress review

Maria K 3/19/2026

First couple days have been great!
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Expecting good sleep

Ron C 3/18/2026

The mattress just arrived today and I'm expecting a good night's sleep.
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Sleep

Marcella M 3/17/2026

Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Good

Sonia D 3/17/2026

Confy and. Good
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Good quality product

Tony M 3/16/2026

Great quality product and Ivan Smith Furniture was easy to deal with.
Originally posted on www.serta.com

Yes, I recommend this product

3 Stars

3

Kathy Y 3/16/2026

They ordered the wrong one we need firm not medium
Originally posted on www.serta.com

No, I do not recommend this product