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4.6 | 1610 Reviews

Perfect Sleeper Blue Lagoon Nights 13.5" Medium Mattress -California King

Perfect Sleeper

Features

  • 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.
  • Gel Band Support Gel memory foam lumbar support band provides support for the lower back and hips.
  • Anti-Microbial Technology - Our anti-microbial mattress technology will keep your mattress fresh and clean from odor-causing bacteria.

Quick Specs

  • Brand: SERTA
  • Line: Perfect Sleeper
  • Type: Tight Top
  • Width: 72"
  • Height: 13.5"
  • Depth: 83.5"

See More

 
Featuring an 825-coil density system, this supportive mattress offers zoned comfort and pressure relief with a lumbar gel support band and Cool Twist® Gel Memory Foam that contours to your body-with upgrades available with more cooling layers and support.

Features

  • 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.
  • Gel Band Support Gel memory foam lumbar support band provides support for the lower back and hips.
  • Anti-Microbial Technology - Our anti-microbial mattress technology will keep your mattress fresh and clean from odor-causing bacteria.
  • Custom Support Coil System - This 825-coil density system provides contouring, cradling support and minimizes motion transfer.
  • 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
  • Offers the perfect balance between soft and firm; Ideal for all sleep positions
  • 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 747935948860
Computed Mattress Size Cal King
Country of Manufacture USA
Assembled in USA? Yes
Computed Product Type One Sided Mattress
Product Category Mattress
Family Name Perfect Sleeper
SubFamily Name Blue Lagoon Nights
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 PillowSoft Aire
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) 0.5
Layer 5 Material Cushion Quilt Foam
Layer 5 Thickness (in) 2
Layer 6 Material Gel Band Support
Layer 6 Thickness (in) 0.375
Layer 7 Material 825 Edition Custom Support Coil System
Layer 7 Thickness (in) 8
Layer 8 Material Balanced Support Pad
Layer 8 Thickness (in) 1
Product Depth (in) 83.5
Product Height (in) 13.5
Product Width (in) 72
Shipping Depth (in) 84
Shipping Height (in) 13.5
Shipping Width (in) 73
Product Weight (lb) 107.34
Shipping Weight (lb) 108
Edge Support Technology Name Best Edge® Foam Encasement
Antimicrobial? Yes
Breathable Construction? Yes
Coil Count 891
Coil Density 1125
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? No
Product Accent Color Dark Blue
Product Cubes 48.48
Quilted Cover? Yes
Reinforced Center? No
Side Color Dark Blue
Top Cover Color Light 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: 72"
  • Height: 13.5"
  • Depth: 83.5"
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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

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

5 Stars

Comfort

Joy S 3/14/2026

The mattress feel wonderful.
Originally posted on www.serta.com

Yes, I recommend this product

1 Stars

NOT WHAT I EXPECTED

Therese R 3/14/2026

The floor model was very plush; this mattress is as hard as a board.
Originally posted on www.serta.com

No, I do not recommend this product

4 Stars

Comfortable but takes a while to break in

Grant C 3/12/2026

Pretty firm compared to the one we tried in the store but we're looking forward to when it softens up. Over all we like it
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Great value

Marvinh W 3/11/2026

No adjustment time needed, great sleep.
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Relief

Aowen A 3/11/2026

Perfect mix of cushy comfort and support!
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

La Crosse

Stilin T 3/10/2026

Have always purchased Serta mattresses
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Awesomely sleep nights

Martha L 3/10/2026

Comfy mattress like sleeping on a cloud.
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Very pleased

Kathleen T 3/10/2026

Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Great sleep

Susan S 3/9/2026

Mattress perfect firmness. Very comfortable.
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Couldn't be happier.

Heather G 3/9/2026

Post hip replacement surgery left me unable to sleep on that side. Being a side sleeper I was miserable. Turned out all I needed was this mattress! Perfect balance of plush & support, so happy to be able to sleep on either of my sides again!
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Serta mattress review

Josie H 3/9/2026

Comfortable yet firm.
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

New bed

Luanne G 3/8/2026

First night was a success. Fingers crossed for the 2nd night especially being a Sunday night.
Originally posted on www.serta.com

Yes, I recommend this product

1 Stars

Les 1

Lester G 3/8/2026

Not as comfortable as it was in the store I'll give it time... Break in time.... Supposed to be plush Little on the stiff side quite a bit
Originally posted on www.serta.com

No, I do not recommend this product

5 Stars

Good bye Backache… Hello sleep!!!

Shana L 3/7/2026

I love the way the mattress supports my body…And that was just the initial test… when I layer on it the first time after delivery… can't wait to go to bed!!!
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Great bed

Debra L 3/5/2026

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

Yes, I recommend this product

4 Stars

Too soon to rate

Mary O 3/4/2026

Looks great, have not slept on it yet
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Blue lagoon mattress

Tonya W 3/3/2026

I must say I haven't bought a mattress in about 15 years. I think the timing was perfect. So far so good!
Originally posted on www.serta.com

Yes, I recommend this product

3 Stars

not firm enough

Balwinder S 3/2/2026

I'm disappointed it is not as firm as i tried it in the store.
Originally posted on www.serta.com

No, I do not recommend this product

4 Stars

just bought

Stella G 3/2/2026

Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Great

Maribel R 3/1/2026

Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Mattress

Robert W 2/28/2026

Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Nice

Kenneth R 2/28/2026

Need to break it in
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Serta Twin XL

David C 2/27/2026

All that I expected. Great investment
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Murphy bed

Lynn K 2/26/2026

So far has been great!
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Awesome

Charles H 2/25/2026

Great sleep
Originally posted on www.serta.com

Yes, I recommend this product

5 Stars

Very good mattress

Bartolo M 2/24/2026

great to sleep, helps me rest and go to sleep.
Originally posted on www.serta.com

Yes, I recommend this product