Plush Pressure Relief Without the Sinking Feeling
The Serta Perfect Sleeper® Cascade Canyon Plush Mattress is a 13.5" innerspring that leans soft. PillowSoft® Aire Foam and a CoolFeel® cover with breathable wool create a cushioned sleep surface, while linked Q4™ coils and 5 Zoned Comfort keep your body supported and aligned underneath.
Plush Comfort, Explained
Plush lets the shoulders and hips settle in, which is exactly what side sleepers need to take pressure off those joints. Because the support comes from a zoned, linked coil unit rather than foam alone, you get that softer feel without the stuck-in-the-mattress sensation. It's a tight-top plush, so it stays clean-lined and easy to fit with sheets.
What's Inside the Cascade Canyon Plush
Serta's Q4™ Support System: 860-density 4-in-1 linked coils.
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1Q4™ Support System
860-density 4-in-1 coils are linked together to spread your weight evenly and deliver long-lasting support, surrounded by BestEdge® Foam Encasement for stability. -
25 Zoned Comfort
Alternating firm and plush zones are designed to hug the curves of your shoulders, back and hips, adding support where the body naturally curves. -
3PillowSoft® Aire Foam
A gently rippled comfort foam that cushions pressure points while promoting airflow through the comfort layers. -
4CoolFeel® Fabric with breathable wool
A cooling-performance cover fabric paired with a breathable wool layer to help regulate temperature and minimize overheating.
CertiPUR-US® Certified foams · Made in the U.S.A. with global components
Why You'll Love It
Designed to Ease Aches
Zoned coil support and pressure-relieving foams are designed to help relieve aches and back pain by keeping your body in natural alignment.
Sleeps Cool
CoolFeel® Fabric and a breathable wool layer help regulate temperature, while the coil core lets air move through the mattress.
Built to Last
Linked 4-in-1 coils share the load evenly across the bed, helping reduce sagging and body impressions over time.
Classic Innerspring Feel
A responsive, on-top-of-the-bed feel that's easy to move on, with the airflow and bounce people love about coils.
Support Where Your Body Needs It
Your shoulders, hips and lower legs press into a mattress the most, while the lower back and upper thighs need extra lift. 5 Zoned Comfort answers both, with plusher zones where you press in and firmer zones where you curve, so the Cascade Canyon Plush keeps your spine aligned from head to toe.
Choose Your Cascade Canyon Feel
Compare the Perfect Sleeper® Collection
| Series | Type | Coils | Comfort Layer | Cover | Feels & Heights |
|---|---|---|---|---|---|
| Cascade Ridge | Innerspring | 860-density Q4™ | PillowSoft® Aire Foam | CoolFeel® Fabric | Plush 12.5" |
| Cascade CanyonTHIS SERIES | Innerspring | 860-density Q4™ | PillowSoft® Aire Foam | CoolFeel® Fabric + wool | Firm 13", Medium 13", Plush 13.5", Medium Pillow Top 14", Plush Pillow Top 14" |
| Cascade Range | Innerspring | 920-density Q4™ | QuiltLoft™ Memory Foam | CoolFeel® Plus Fabric + wool | Extra Firm 14", Medium 14", Firm Pillow Top 14.5", Plush Pillow Top 15" |
| Cascade Bluff | Hybrid | 920-density Q4™ | EverCool® Supreme Memory Foam | CoolFeel® Plus Fabric + wool | Medium 13.5", Firm 14.5", Plush 14.5" |
Every model shares Serta's Q4™ Support System, 5 Zoned Comfort, BestEdge® Foam Encasement and a 10-year limited warranty.
MATTRESS DIMENSIONS
13.5" high
13.5" high
13.5" high
13.5" high
13.5" high
13.5" high
13.5" high
*Dimensions are approximate and may vary slightly. Split King ships as two Twin XL mattresses.
SPECIFICATIONS
| Brand | Serta® |
|---|---|
| Collection | Perfect Sleeper® (2026) |
| Series | Cascade Canyon |
| Model Number | 500309452 |
| Feel | Plush |
| Mattress Height | 13.5" |
| Mattress Type | Innerspring (tight top) |
| Support System | 860-density Q4™ Support System, 4-in-1 linked coils |
| Zoned Support | 5 Zoned Comfort |
| Comfort Layer | PillowSoft® Aire Foam |
| Edge Support | BestEdge® Foam Encasement |
| Cover | CoolFeel® Fabric with breathable wool layer |
| Recommended For | Side sleepers who want deeper pressure relief |
| Foam Certification | CertiPUR-US® Certified |
| Origin | Made in the U.S.A. with global components |
| Compatibility | Adjustable bases, box springs, traditional frames, platform and slatted frames, bunky boards |
| Warranty | 10-year limited warranty |
CARE
- Use a mattress protector to guard against spills and stains and extend the life of your mattress.
- Don't apply liquids or cleaners directly to the mattress; moisture can stain the fabric and break down the foams.
- To freshen a soiled area, sprinkle baking soda, let it stand about 15 minutes, then vacuum. Repeat as needed and air the mattress out.