Technical Features for Serta Cobalt Coast™ Plush Pillow Top
King Size Mattress & Standard Box Spring Set With Frame
CoolFeel Fabric
A luxurious, breathable cover with a cool-to-the-touch sensation from technology that is plant-derived.
HexCloud Gel Foam
Unique geometric cut outs designed to help relieve pain from pressure points.
Serta PillowSoft HD Foam
Premium HD polyurethane foam with a softer feel. Provides pressure relief and helps reduce tossing and turning.
825 Edition Custom Support Coil System
The 825 Edition Custom Support coil system uses an individually wrapped design where each coil contours independently.
PillowSoft Aire
Provides the plush feel with a touch of firmness from the springs to support spinal alignment.
Balanced Support Foam
Works in conjunction with the other premium foams to provide that just right feel between support and comfort.
BestEdge® Foam Encasement
Foam Encased Edge Support keeps comfort consistent, no matter where you sleep.
Serta Cobalt Coast™ Plush Pillow Specifications |
Model Name: |
Perfect Sleeper Cobalt Coast |
Comfort Level: |
Plush Pillow Top |
Mattress Crown Height: |
15" |
Quilt - Top of Mattress: |
Layers of Fiber or Foam sewn to the cover of the mattress |
Quilting Layers: |
CoolFeel™ Fabric Fiber Layer |
Comfort - Padding Layers: |
This provides a cushioning layer between you and the support system in the bed. Different kinds of padding will provide different levels of comfort.
|
Comfort Layers: |
Serta® PillowSoft® HD Foam PillowSoft® Aire Serta® Comfort XD™ Foam HexCloud™ Gel Memory Foam
|
Correct Back Support System: |
• This is a general term used to describe how a mattress distributes and stabilizes body weight and maintains proper spinal alignment. Different materials provide different levels of support. • 1000 Edition Custom Support Coil System • Serta® Balanced Support Foam |
Support Layers |
Coil Unit in a mattress that provides support for the sleeper. |
Coil Gauge |
N/A |
Coil Density |
Twin – 465 Twin XL – 513 Full – 647 Queen – 825 King – 1051 Cal King – 1117 |
Serta Customer Ratings & Reviews
Overall Rating

443 out of 468 customers recommend this product
Why buy Serta Online?
30 Night
In-Home Trial
Experience the mattress in your home for up to 30 nights. If you’re not completely satisfied, you can exchange or return it for a refund.
10-Year Limited
Warranty
You should be able to rely on the quality of your rest night after night. That’s why every Serta® mattress is backed by Serta’s 10-year limited warranty.
Designed and Built
in the USA
All Serta mattresses are designed and assembled in the USA, leveraging our 85 years of manufacturing expertise.
Certipur-US
Certified
Rest easy knowing Serta uses only CertiPUR-US® Certified Polyurethane Foam.
The Perfect Sleeper Cobalt Coast Plush Pillow Top King Size Mattress and Standard Box Spring Set with Frame has many exciting features for users of all types. It's one of FactoryOutletStore's best selling Serta King Size Plush Super Pillow Top Mattress & Box Spring Set W Frame. See the Perfect Sleeper Cobalt Coast Plush Pillow Top King Size Mattress and Standard Box Spring Set with Frame gallery images above for more product views. The Perfect Sleeper Cobalt Coast Plush Pillow Top King Size Mattress and Standard Box Spring Set with Frame is sold as a Brand New Unopened Item.
Package Deals Buy together
Cobalt Coast™ Plush Pillow Top
King Size Mattress & Standard Box Spring Set With Frame