CLOSEOUT! Perfect Sleeper Cobalt Calm 13" Plush Mattress-King

4.6 (1,141)
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Now $1,347.00 (48% off)$2,599.00
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 1,141 customers reviews.
4.6/5

1,141 star ratings & reviews

Write a Review
79.1% of reviews have 5 stars
903
11.5% of reviews have 4 stars
131
4.8% of reviews have 3 stars
55
2.0% of reviews have 2 stars
23
2.5% of reviews have 1 star
29

232 customer images

1,141 reviews
William M
4 days ago

Comfortable mattress

Great mattress so far. Very comfortable and easy to sleep on.

Customer review from Serta

CLOSEOUT! Serta Perfect Sleeper Cobalt Calm 13" Plush Mattress-King This review is from CLOSEOUT! Serta Perfect Sleeper Cobalt Calm 13" Plush Mattress-King
Shana K
6 days ago

AMAZING MATTRESS!!!

I was very nervous to purchase a new mattress after having mine for 15 years! My SERTA is super comfortable and I sleep deep!

Customer review from Serta

Prestine M
6 days ago

Comfortable mattress

Comfy supportive mattress

Customer review from Serta

April R
6 days ago

Would buy again

Comfortable supportive

Customer review from Serta

Laura E
8 days ago

New mattress

Very comfortable and good support

Customer review from Serta

Andrea H
8 days ago

Perfectly Dreamy!

Great mattress! So comfortable with the support I need for a good nights rest.

Customer review from Serta

Cindy N
8 days ago

Mattress review

Purchased December 27,3025 and delivered 1/8/26. It is beginning to sink down in area beneath buttocks area. I weigh 169and husband weighs 254 and only had it for three weeks. Other than that it’s comfortable. Concerned if will continue to sink further.

Customer review from Serta

Beverly R
8 days ago

Best nights sleep ever!

Best nights sleep ever!

Customer review from Serta