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On Display in Boulder
4.6 | 1331 Reviews

Perfect Sleeper Cobalt Calm 13.25" Plush Mattress -Twin

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: Tight Top
  • Width: 38"
  • Height: 13.25"
  • Depth: 74.5"

See More

 
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
  • Cradles you in cushiony softness; Ideal for side sleepers
  • 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 747935948556
Computed Mattress Size Twin
Country of Manufacture USA
Assembled in USA? Yes
Computed Product Type One Sided Mattress
Product Category Mattress
Family Name ,
SubFamily Name Cobalt Calm
Mattress Top Type Tight 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 Quilt Loft Foam
Layer 2 Thickness (in) 1
Layer 3 Material PillowSoft Aire
Layer 3 Thickness (in) 1
Layer 4 Material Cool Twist Gel Memory Foam
Layer 4 Thickness (in) 1
Layer 5 Material Cool Twist Gel Foam
Layer 5 Thickness (in) 1
Layer 6 Material 850 3 Zoned Coil System
Layer 6 Thickness (in) 8
Layer 7 Material Balanced Support Pad
Layer 7 Thickness (in) 1
Product Depth (in) 74.5
Product Height (in) 13.25
Product Width (in) 38
Shipping Depth (in) 75
Shipping Height (in) 13.25
Shipping Width (in) 38
Product Weight (lb) 45.2,
Shipping Weight (lb) 46
Edge Support Technology Name Best Edge® Foam Encasement
Antimicrobial? Yes
Breathable Construction? Yes
Coil Count 336
Coil Density 491
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 Plush
Mattress Cover Design Floral
Mattress Cover Stitch Design Floral
Memory Foam? Yes
Moisture-Wicking? Yes
Natural Fibers? No
Pillow Top? No
Product Accent Color Light Blue
Product Cubes 23.31
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: Tight Top

  • Dimensions

  • Width: 38"
  • Height: 13.25"
  • Depth: 74.5"

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

91% of reviewers recommend this product.

5 Stars

Serta Perfect Sleeper Med firm

Manon S 4/25/2025

Mattress is medium firm support over which I placed a duck feathered topper. It is very comfortable.
Originally posted on www.serta.com

Yes, I recommend this product

3 Stars

Nice

Monica L 4/25/2025

Not soft material
Originally posted on www.serta.com

No, I do not recommend this product

4 Stars

I love the firmness

Kathleen P 4/25/2025

I've been needing a firm mattress due to arthritis in back.
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Candies New Mattress

Candice H 4/24/2025

Great for side sleepers. Supportive, comfortable and restful.
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Great night sleep

Dorothey C 4/24/2025

Very supportive and is a great night rest.
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Comfy

Tricia D 4/22/2025

Much better sleep!
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Perfect mattress

Miranda B 4/21/2025

This mattress is perfect for my room! Super comfy and fluffy.
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

100% satisfied

Nina P 4/20/2025

I tried a foam mattress and it didn't give me the support I needed. With Perfect Sleep, I resolved the issue and returned the foam mattress.
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Very comfortable and supportive. Would highly recommend

Tracy L 4/19/2025

Very comfortable and supportive. Would highly recommend
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Awesome

Asnley S 4/18/2025

Happy with my purchase!
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Comfy

Julia S 4/18/2025

Comfortable sleep, maybe adjust your sheet blanket ratio but other than that have had good sleep the last few nights
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Comfortable

Anita H 4/16/2025

It's really comfortable
Originally posted on www.serta.com

Yes, I recommend this product

1 Stars

Disappointed

Casey S 4/13/2025

That broke down within a few months of having
Originally posted on www.serta.com

No, I do not recommend this product

5 Stars

Sleep so good.

Rossia L 4/13/2025

I am very comfortable and relaxed with this mattress.
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Great mattress

Rickie H 4/11/2025

Comfortable, supportive, good quality mattress. I have slept on a certain mattress for over 30 years. Good quality, that lasts forever. And who doesn't want a good night sleep?
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Fantastic!

David C 4/11/2025

The perfect mattress- not too firm and not too soft
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Fantastic

4/11/2025

Very comfy and glad to have it
Originally posted on www.serta.com

Yes, I recommend this product

4 Stars

Mattress Review

Janet C 4/11/2025

Good firm mattress but would have preferred a flat surface lile my past Serta Perfect Sleeper
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Great support

Nkcody 4/8/2025

I love this mattress! Great support unlike the memory foam toppers, and mattresses I have tried. Worth the investment to get this traditional spring mattress. As an older person I have found it easier to move about and the edges are very firm for sitting. Highly recommend!
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Super firm mattress

Donna B 4/8/2025

Extra firm, and a great nights sleep. Easier for me to get on and off!
Originally posted on www.serta.com

Yes, I recommend this product

1 Stars

Comfy

Yadira C 4/8/2025

Very comfy mattress
Originally posted on www.serta.com

No, I do not recommend this product

4 Stars

Looks good

William D 4/7/2025

Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Happy

Tammy J 4/7/2025

Very comfortable
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Twin XL x 2

Myna S 4/7/2025

Both of us enjoy the new mattresses
Originally posted on www.serta.com

Yes, I recommend this product

4 Stars

good mattess

Laura E 4/5/2025

Very comfortable.
Originally posted on www.serta.com

Yes, I recommend this product

1 Stars

Hurts Back

McCarty 4/3/2025

Will be returning for refund. Hurts wife's back and is sagging in the first 30 days.
Originally posted on www.serta.com

No, I do not recommend this product

5 Stars

Love this comfy mattress

Mary V 4/1/2025

Pillow top is so comfortable!
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Great Experience - Perfect Sleep

Ioannis T 3/30/2025

Purchased the I-Series 2000 and revolutionized my body structure! From months of back pain, finally feel normal again.
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

New mattress

Vasiliki B 3/30/2025

Comfy and supportive!
Originally posted on www.serta.com

Yes, I recommend this product

2 Stars

Good mattress

Jai S 3/30/2025

Nice mattress but more stiff than one I sat on in store. Couldn't sleep much on it and had to buy a mattress topper to make it able to sleep on.
Originally posted on www.serta.com

No, I do not recommend this product

5 Stars

Blue Lagoon

Victor C 3/29/2025

Very good so far. Finally got it from the Dump Furniture Outlet
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Great comfort and Price

Brenda S 3/27/2025

Happy, medium firmness, very comfortable, excellent price
Originally posted on www.serta.com

Yes, I recommend this product

4 Stars

Mattress review

Julie J 3/27/2025

So far I'm very happy with this mattress! I sleep well on it and my hip pain is gone!
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Just what orderd

Calvin F 3/26/2025

Love this mattress
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

My serta

Megan H 3/25/2025

My bed is so far is so comfortable I love it
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

great mattress

Jean A 3/23/2025

great mattress the best night's sleep I have had in years
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

5 stars

Rachel F 3/23/2025

Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Quality/Comfort

Brian D 3/22/2025

Very high quality and the comfort level is next level!
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

So exciting!

Barbara C 3/22/2025

I have always wanted one of these for years and now it's mine! The only way I can describe this bed is that I feel embraced by the mattress, which allows for a great sleeping experience.
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Nice and Firm!!

Diane w H 3/20/2025

I love the firmness and thickness of this mattress. I am very pleased with this mattress.
Originally posted on www.serta.com

Yes, I recommend this product

3 Stars

much firmer than the store model

Mary M 3/20/2025

lots of support, way firmer than the store model. we both don't really like the firmness after a week sleeping on it
Originally posted on www.serta.com

No, I do not recommend this product

5 Stars

Perfect mattress finally we found this

Jim P 3/19/2025

Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Love!

Monica V 3/18/2025

Perfect, I'm sleeping on cloud of marshmallows!!
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Setra Ultimate 14.5" Queen

James C 3/18/2025

Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Impressed

Lisa V 3/18/2025

What a difference!
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Nice Bed

Vicki L 3/17/2025

nice and comfortable mattress
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Comfortable

Lori S 3/16/2025

Amazing mattress, comfortable and plush
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Great

Paulette M 3/15/2025

Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Comfort

Charles S 3/14/2025

Mattress is firm but comfortable with pillow top. Excited for a good nights sleep 🙂
Originally posted on www.serta.com

Yes, I recommend this product

4 Stars

Finally some good sleep at the beach!

Laura K 3/14/2025

Thank you! Wonderful mattress!
Originally posted on www.serta.com

Yes, I recommend this product