Perfect Sleeper Cobalt Calm 13" Plush Mattress-King

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Now $1,347.00 (48% off)$2,599.00
Color:No Color
Size:King

Type: Mattress Only

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Product details

Web ID: 21339196

Featuring a three-zoned coil design, the Perfect Sleeper 13" Cobalt Calm mattress from Serta offers pressure relief and plush support where you need it, with a Cool Twist® Gel Memory Foam that contours to your body.

  • Product Features

    • Mattress top: tight top
    • Mattress type: innerspring
    • 850 Edition Custom 3 zoned support coil system of individually wrapped coils provides contouring, cradling support from edge-to-edge, minimizing the impact of your partner's movement
    • Breathable Cool Twist® Gel Memory Foam gently cradles your body while promoting enhanced airflow
    • CoolFeel™ fabric creates a luxurious, breathable cover with a cool-to-the-touch sensation from technology that is plant-derived
    • Antimicrobial mattress protection keeps your mattress fresh and clean from odor causing bacteria; does not protect users against bacteria, viruses, germs or other disease organisms
    • Coil count: 1059
    • Compatible with most frames, platforms and adjustable bases
    • Manufacturer's 10-year non-prorated warranty
    • Meets federal fire safety standards
    • Made in the USA of imported and domestic parts
    • Woman Owned
    • Box spring/foundation sold separately

  • Shipping & Returns

    • Shipping Method: Scheduled Delivery
    • For complete details, see our Shipping and Returns policies.

Ratings & Reviews

Here's what customers think
  • The mattress is described as having a comfortable and supportive design, with a plush pillowtop that conforms to the body and sturdy innerspring coils providing good back and body support.
  • Customers report improved sleep quality and reduced back pain compared to their previous mattresses.
  • The cooling technology is also appreciated for helping regulate body temperature.
  • The medium firmness level seems to accommodate a wide range of sleep preferences.
AI-generated summary from 1,197 customers reviews.
4.6/5

1,197 star ratings & reviews

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1,197 reviewssorted by Newest

Tom B
6 days ago

Son's new mattress

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!

Customer review from Serta

Penelope W
7 days ago

Lopsided?

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

Customer review from Serta

Luz R
8 days ago

super comfy

love it very much and its so soft and comfortable

Customer review from Serta

Joan D
10 days ago

Nice mattress

Good support. Looks great!

Customer review from Serta

Clarence B
12 days ago

Cobalt calm mattress Med

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

Customer review from Serta

Betsy C
12 days ago

Too firm

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

Customer review from Serta

Keisuke I
12 days ago

My lower back doesn't hurt.

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.

Customer review from Serta

Casey G
12 days ago

Comfy

Took a few days to break in but then very comfortable

Customer review from Serta