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Serta Perfect Sleeper Cobalt Calm Plush Pillow Top King Mattress Set

Serta Perfect Sleeper Cobalt Calm Plush Pillow Top King Mattress Set

4.5· 2,900 ratings

Last price we saw

$999.00at Lexington Overstock Warehouse, last seen Oct 31

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Our take on the Serta Perfect Sleeper Cobalt Calm Plush Pillow Top King Mattress Set

The Serta Perfect Sleeper Cobalt Calm Plush Pillow Top is a king-size innerspring mattress with a plush pillow top, gel and memory foam layers, and an 825-coil support core. It is CertiPUR-US certified, uses CoolFeel fabric on the cover, and is assembled in the USA. It suits sleepers who want a soft, cushioned surface over spring support rather than a firm all-foam bed. The foundation is sold separately, so budget for a box spring or adjustable base.

Best forSide and back sleepers who want a soft, cushioned topCouples who want a king with spring support and motion giveShoppers replacing an older innerspring bedHot sleepers drawn to the CoolFeel cover
Pros
  • Plush pillow top adds pressure relief at shoulders and hips
  • 825-coil innerspring core gives a more traditional bouncy feel
  • Gel and memory foam layers add cushioning without a full foam build
  • CertiPUR-US certified foams
  • Assembled in the USA
Cons
  • Foundation not included, so the set costs more than the mattress alone
  • Plush pillow tops can soften and develop body impressions over time
  • Innersprings transfer more motion than foam or hybrid beds
  • Soft top may be too yielding for strict stomach sleepers

Serta Perfect Sleeper Cobalt Calm Plush Pillow Top King Mattress Set prices at every store

  • Lexington Overstock WarehouseCheck price at Lexington Overstock Warehouse

Serta Perfect Sleeper Cobalt Calm Plush Pillow Top King Mattress Set price history

Lowest price we've seen: $999.00 on Oct 31 at Lexington Overstock Warehouse. Tracked across 1 store since Oct 31.

What reviewers say

Owner feedback on the Perfect Sleeper line is generally positive, with buyers praising the cushioned feel and value for a pillow-top innerspring. Complaints tend to focus on softening over time and motion transfer.

Pros
  • Soft, supportive pillow-top feel
  • Good value for a king innerspring
  • Cooler sleep than expected from the cover fabric
Cons
  • Body impressions developing after months of use
  • Noticeable motion transfer for couples
  • Firmer than some shoppers expect from a plush label

Specifications

Firmness Level
Medium Pillow Top, Firm, Firm Pillow Top, Plush
Mattress Type
Innerspring
Type
Mattress
Length
79.5 in
Width
76 in (King)
Certifications
CertiPUR-US Certified
Core Material
Foam
Cover Material
CoolFeel™ fabric
Material
Foam
Foundation Included
No
Coil Type
825-coil density system
Construction Highlights
100% USA Assembled
Fill Material
Memory Foam, Gel foam
Fill Type
Gel foam
Fill Style
Plush
Fill Weight
93 Lbs (Cal King)
Fill Specialty Style
Antimicrobial
Sleep Position
Stomach Sleeper, Back Sleeper, Side Sleeper
Specialty Style
Pillow Top
For Kids
No
Typical Users
Every type of sleeper
Age Range
ADULT

Questions and answers

Is the Cobalt Calm Plush good for side sleepers?
Yes. The plush pillow top cushions the shoulders and hips, which suits side sleepers. Stomach sleepers may want a firmer model in the line.
Does the price include a foundation?
No. The foundation is not included, so add a box spring or adjustable base to your budget.
How does it compare with the firm version?
The firm version has less top cushioning and suits back and stomach sleepers. The plush pillow top is softer and better for side sleepers and lighter bodies.
What is the coil count?
It uses an 825-coil density system. That is a mid-range count for a king innerspring.
Is it hot to sleep on?
The CoolFeel cover is designed to feel cooler, and the innerspring core allows airflow. It is generally not as heat-trapping as an all-foam bed.
When is it cheapest?
Mattress prices drop around major holiday sales and during new-model clearance. Track the price history before buying.
What do buyers say about the Serta Perfect Sleeper Cobalt Calm Plush Pillow Top King Mattress Set?
Rated 4.5 out of 5 from 2,900 ratings.

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