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Serta Perfect Sleeper Cobalt Calm Plush
Serta Perfect Sleeper Cobalt Calm Plush Price range: $899.00 through $1,399.00

Serta Perfect Sleeper® Cascade Range Extra Firm

Price range: $899.00 through $1,299.00

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Designed with Serta’s Q4™ Support System and 5‑Zone Comfort to help relieve aches and back pains with steady support and pressure relief—so you get perfect sleep, night after night. Great for shoppers searching for a supportive mattress or looking for options that help with back and body discomfort.

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SKU: Perfect Sleeper® Cobalt Calm Extra Firm Categories: , , , , , , Tags: , ,
Description

Discover the Serta Perfect Sleeper® Cascade Range Extra Firm Mattress in LaGrange

If you’re looking for a truly firm, supportive mattress, the Serta Perfect Sleeper® Cascade Range Extra Firm delivers. Built with a 14” profile, advanced zoned support, and cooling comfort, this mattress is designed to keep your spine aligned and your body fully supported throughout the night—especially for back and stomach sleepers.


Key Features

Extra Firm Support You Can Count On

The Cascade Range Extra Firm offers a solid, supportive feel with minimal sink—ideal for sleepers who need strong spinal alignment and a stable sleep surface.


860 Density Q4™ Support System

This advanced coil system features individually wrapped 4-in-1 coils that:

  • Provide consistent, durable support

  • Adapt to your body’s shape

  • Reduce motion transfer between partners


5 Zoned Comfort for Targeted Support

Designed with alternating zones of support to:

  • Cradle shoulders and hips

  • Reinforce the lower back

  • Promote proper alignment across your entire body


CushionGel™ Foam

A layer of CushionGel™ Foam adds:

  • Firm, supportive cushioning

  • Subtle pressure relief without softness

  • Improved airflow for a more breathable sleep surface


CoolFeel® Fabric

The mattress is topped with CoolFeel® Fabric, engineered to:

  • Feel cool to the touch

  • Promote airflow

  • Help regulate temperature throughout the night


Adjustable Base Compatible

Works with:

  • Adjustable bases

  • Platform beds

  • Box springs and traditional frames


CertiPUR-US® Certified Foams

All foams are CertiPUR-US® Certified, meaning they are:

  • Made without harmful chemicals

  • Safe and durable for long-term use


10-Year Limited Warranty

Backed by Serta’s 10-year limited warranty for long-lasting performance and peace of mind.


Why Choose the Cascade Range Extra Firm Mattress?

This mattress is ideal for:

  • Back and stomach sleepers needing strong support

  • Customers who prefer a firm, no-sink feel

  • Anyone dealing with lower back discomfort and needing better alignment

It delivers firm support, targeted zoning, and cooling comfort—without the softness of a plush mattress.


Shop Serta Perfect Sleeper® Mattresses in LaGrange at Watts Furniture & Mattress

At Watts Furniture & Mattress, we help you find the right comfort—not just the firmest mattress.

Come try the Serta Perfect Sleeper® Cascade Range Extra Firm in person and feel the difference for yourself.

We offer:

  • Local delivery

  • Flexible financing options

  • Expert guidance to match you with the right mattress

Visit our LaGrange showroom today or contact us for availability and pricing.

Additional information
Mattress SizeFull, King, Queen, Twin, Twin XL
Mattress ComfortExtra Firm
Mattress TypeInnerspring
BrandSerta
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