Serta Perfect Sleeper® Cobalt Coast 15" Plush Pillow Top Mattress
Why Our Sleep Experts® Love It
Why Our Sleep Experts® Love It
"Looking for a beautiful plush pillowtop mattress?! Look no other than the Perfect Sleeper Cobalt 15" Plush mattress from Serta! Very soft feel but with great support that will make you wake up fully rested ! "- Maria Vargas, Sleep Expert
Overview
Wake up invigorated after a restful sleep on your Serta® Perfect Sleeper® Cobalt Coast Plush 15" Mattress. This pillowtop bed offers a generous layer of PillowSoft™ Plush Foam that invites sleepers in all positions to snuggle in, while PillowSoft Aire™ Medium Comfort Foam provides a touch of firmness to support spinal alignment.
Serta's exclusive HexCloud™ Gel Medium Comfort Foam relieves your pressure points. And Cool Twist™ Gel Medium Comfort Foam not only contours to bodies of all shapes and sizes, but it also brings additional cooling that works in tandem with the plant-derived CoolFeel™ Knit Fabric cover to keep hot sleepers comfy.
Compare the Collection
Mattress Firm offers one of the largest selections of mattresses to choose from. With a curated assortment of brands and products at every price point, you are sure to find the best mattress for your sleep needs.
- Price
- Deliver By
- Comfort
- Best For
- Mattress Type
- Height
Cooling Technology
Pressure Relief
Support
Adjustable Base Friendly
Breathable

Plush
Side Sleepers
Innerspring
15"
Mattributes
Cooling Technology
Pressure Relief
Support
Adjustable Base Friendly
YESBreathable
YESNeed help deciding? Talk to a Sleep Expert®
Our Sleep Experts® are available in-store, online or by phone or chat to help find your perfect mattress.
Benefits
Features
PLUSH COMFORT
MATTRESS HEIGHT
This plush mattress embraces your curves to relieve pressure and is ideal for side sleepers and some back sleepers
The plant-derived cover is cool to the touch, while an added layer of antimicrobial technology keeps your mattress fresh
Wrapped coils add conforming support, while proprietary foam encasement technology eliminates the “roll-off” feeling
Breakdown
- Quilting Layer
- CoolFeel™ Fabric
- Fiber Layer
- Comfort Layer
- Serta® PillowSoft® HD Foam
- PillowSoft® Aire
- Cool Twist® Gel Foam
- HexCloud™ Gel Foam
- Support System
- 825 Edition Custom Support Coil System
- Serta® Balanced Support Foam
Free Delivery
Includes transportation, mileage and tolls
Home protection from outside direct and elements
Delivery where you want - front door, side door or even garage
Contactless delivery, meaning we won’t enter your home
Regular $24.99
NOW FREE
Mattress Setup
and Haul Away
Includes all Free Delivery services plus:
New mattress and box spring setup
Removal of packaging material from purchased item(s) & removal of old mattress set (equal to the number of pieces purchased)
Three maximum flight of stairs purchased items can be carried
$99.99
Mattress Setup and
Haul Away / Adj Base
Includes all Mattress Setup and Haul Away
services plus:
Five maximum flight of stairs purchased items can be carried
Delivery and setup of up to three mattress sets
Setup of adjustable bases purchased from Mattress Firm
$149.99