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

4.6 (1,123)
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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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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 1,123 customers reviews.
4.6/5

1,123 star ratings & reviews

Write a Review
79.2% of reviews have 5 stars
889
11.6% of reviews have 4 stars
130
4.6% of reviews have 3 stars
52
2.0% of reviews have 2 stars
23
2.6% of reviews have 1 star
29

232 customer images

1,123 reviews
Nancy R
4 days ago

Perfect sleeper

Super comfy! Sleep is so much better.

Customer review from Serta

Amber Z
4 days ago

Wonderful

I love this mattress so far. It’s firm and soft at the same time

Customer review from Serta

Jarrod H
5 days ago

Love it so far!

Love it so far!

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
Frank C
5 days ago

Comfort

To soon to tell

Customer review from Serta

Sridutt T
6 days ago

PSL23Blueloggon

I got mattress on 12th Jan 2026 . It was comfortable for 10 days. However, it started sagging on one side & back started hurting

Customer review from Serta

Jessica K
6 days ago

Excellent mattress

Supportive, comfortable and helped ease my back and hip pain.

Customer review from Serta

Jacquelyn C
6 days ago

Bed sink

Soft but sleeping it feels like I'm in a sink whole. When up in morning I see a sink. Even.if I rotate it. It does the same

Customer review from Serta

Maria M
6 days ago

Sinks

Me and my husband are not over weight we are healthy BMI and this mattress sinks in significantly in each side we sleep on with a hump in the middle I have to roll up on to the hump To his side so cuddle him. I have back pain we are both side and back sleepers. I opted pillow top as I had a posturepedic medium pillow top that did not cause these problems until after having for 10 plus years.

Customer review from Serta