CLOSEOUT! Perfect Sleeper Cobalt Calm 12" Extra Firm Mattress-King

4.6 (1,102)
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$1,212.30 (53% off) with code: HOME Sale $1,347.00$2,599.00
Size:King

Type: Mattress Only

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68/mo.* suggested payments for 18-months totaling $1,212.30 with Macy's Card.

Product details

Web ID: 21339158
Featuring a three-zoned coil design, the Perfect Sleeper 12" Cobalt Calm mattress from Serta offers pressure relief and extra-firm 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
    • Enjoy a longer window to return most of your holiday purchases. See our Extended Holiday Return Policy to see if this item qualifies.
    • For complete details, see our Shipping and Returns policies.

Ratings & Reviews

Here's what customers think
  • The mattress provides a comfortable and supportive sleep experience, with a medium firmness and pillowtop that customers find well-balanced.
  • Many report feeling well-rested and experiencing less back pain after using the mattress.
  • The cooling technology is also praised for regulating body temperature during sleep.
  • Overall, the mattress appears to be of high quality and offer good value.
AI-generated summary from 1,102 customers reviews.
4.6/5

1,102 star ratings & reviews

Write a Review
79.1% of reviews have 5 stars
872
11.8% of reviews have 4 stars
130
4.4% of reviews have 3 stars
48
2.1% of reviews have 2 stars
23
2.6% of reviews have 1 star
29

233 customer images

1,102 reviews
Deb W
5 days ago

MIL Loves it!

Got it for my 87 year old mom in love and she is sooo happy and absolutely loves it! Soft but not to soft, still supports!

Customer review from Serta

CLOSEOUT! Serta Perfect Sleeper Cobalt Calm 12" Extra Firm Mattress-King This review is from CLOSEOUT! Serta Perfect Sleeper Cobalt Calm 12" Extra Firm Mattress-King
Debra M
5 days ago

Firmer than we are used to.

Waiting for break in period, still too firm. Have slept on it for 4 nights so far.

Customer review from Serta

Veronica T
5 days ago

Love it!

Very soft and comfortable. I brought it for my guest bedroom and I will be buying another for my bedroom this year.

Customer review from Serta

Keith L
6 days ago

Serra King mattress

Very comfortable!

Customer review from Serta

Dan S
6 days ago

Great Mattress!

Suoer comfy, supportive, getting great sleep!

Customer review from Serta

Virginia D
6 days ago

Supportive and comfortable

Supportive and comfortable

Customer review from Serta

Lorraine B
7 days ago

Great Matress

Comfy and supportive

Customer review from Serta

Sandra O
7 days ago

My choice

Comfy and supportive

Customer review from Serta