Soft, Cushioned Comfort with Zoned Support Underneath
The Serta Perfect Sleeper® Cascade Ridge Plush Mattress brings Serta's 2026 Perfect Sleeper design to a 12.5" plush profile. Linked Q4™ coils and 5 Zoned Comfort work beneath a breathable PillowSoft® Aire Foam layer, giving side sleepers a soft place to sink in without losing the support that keeps the spine in line.
Plush Comfort, Explained
Plush means pressure relief first. The surface gives easily under the shoulders and hips, the two places side sleepers feel it most, while the zoned coil unit keeps the lower back and thighs lifted. It's a gentle, cradling feel that still sleeps like a traditional innerspring: responsive, easy to move on, and typically cooler than an all-foam bed.
What's Inside the Cascade Ridge Plush
Layer diagram for this exact model.
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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 soft, breathable comfort foam with a gently rippled surface that adds cushioning while encouraging airflow. -
4CoolFeel® Fabric
A breathable cover fabric treated with cooling performance technology for a cool, fresh feel the moment you lie down.
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 helps 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 Ridge Plush keeps your spine aligned from head to toe.
PillowSoft® Aire FoamA soft, breathable comfort foam with a gently rippled surface that adds cushioning while encouraging airflow.
Compare the Perfect Sleeper® Collection
| Series | Type | Coils | Comfort Layer | Cover | Feels & Heights |
|---|---|---|---|---|---|
| Cascade RidgeTHIS SERIES | Innerspring | 860-density Q4™ | PillowSoft® Aire Foam | CoolFeel® Fabric | Plush 12.5" |
| Cascade Canyon | 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
12.5" high
12.5" high
12.5" high
12.5" high
12.5" high
12.5" high
12.5" 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 Ridge |
| Model Number | 500302972 |
| Feel | Plush |
| Mattress Height | 12.5" |
| 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 |
| Recommended For | Side sleepers who want cushioned shoulders and hips |
| 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.