For screen reader problems with this website, please call660-429-22646 6 0 4 2 9 2 2 6 4Standard carrier rates apply to texts.

1000s of Items In-Stock Ready for Delivery or Pick Up - Visit Us Today!

Serta® Cascade Range 14" Innerspring Extra Firm Tight Top California King Mattress


Model #:

303921CKM

At a Glance

Designed with our 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.Read More

Call for Best Price

Get to know this product.

Product Overview

Product Overview

Q4™ Support System

Our 920-density 4‑in‑1 coils are designed to evenly distribute your weight and provide long‑lasting support—helping you stay comfortable and supported all night

5 Zoned Comfort

This zoned coil system features alternating plush and firm areas that contour to your shoulders, back, and hips for more balanced, body‑hugging comfort

QuiltLoft™ Memory Foam

This conforming quilt‑layer foam gently contours to your body, adding plush, pressure‑relieving comfort right at the surface for a softer, more comfortable sleep experience

CoolFeel® Plus Fabric

Fabric treated with cooling performance technology pairs with a breathable wool layer to help create a refreshing, cool-to-the-touch feel as you settle in—so you stay comfortable from the moment you lie down

Responsibly Crafted

CertiPUR-US® Certified means our foam was tested for and is free from harmful chemicals and gasses

Compatibility

Adjustable base compatible, as well as most frames and foundations, including: traditional frames, box springs, platform frames, slatted frames, bunky boards

Care

To protect your mattress from stains and spills, we highly recommend using a mattress protector; this will also help with the overall health and lifespan of your mattress

We do not recommend applying liquids to the product; applying liquids may stain the fabric and make the soiled area worse; moisture or chemicals applied directly to the mattress can cause premature breakdown of the foam and damage the product

We suggest applying baking soda to the soiled area, let stand about 15 minutes, vacuum, and repeat as needed; air the product out as much as possible

*Mattress only, all other products sold separately. Images may not depict actual size.

Useful Documents
Specifications

General Specs

Color-Finish NameBlue-White
Mattress SizeCalifornia King
Mattress TopTight Top
Mattress Comfort LevelExtra Firm
Mattress ConstructionInnerspring
Adjustable Base CompatibleYes
Number Included Items1
Cooling TechnologyYes
Width (in.)72
Length (in.)84
Height (in.)14
Made In The USAYes
Made InUSA
CollectionCascade Range
Manufacturer Warranty10 Year