The Serta Perfect Sleeper® Cascade Range Plush Pillow Top Mattress is the tallest bed in the 2026 Perfect Sleeper® collection at 15". A plush pillow top and QuiltLoft™ Memory Foam deliver cushioned comfort, while higher-density 920 Q4™ linked coils and 5 Zoned Comfort keep the support strong underneath.

Plush Pillow Top is soft, deep and cradling. The extra layer on top lets the shoulders and hips sink in comfortably, easing pressure for side sleepers, and the denser 920-coil core keeps the bed from feeling hammock-like. If you want a luxurious, plush feel with dependable support, this is it.

Serta's Q4™ Support System: 920-density 4-in-1 linked coils.
CertiPUR-US® Certified foams · Made in the U.S.A. with global components
Zoned coil support and pressure-relieving foams are designed to help relieve aches and back pain by keeping your body in natural alignment.
CoolFeel® Plus Fabric and a breathable wool layer help regulate temperature, while the coil core lets air move through the mattress.
Linked 4-in-1 coils share the load evenly across the bed, helping reduce sagging and body impressions over time.
A responsive, on-top-of-the-bed feel that's easy to move on, with the airflow and bounce people love about coils.
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 Range Plush Pillow Top keeps your spine aligned from head to toe.

| Series | Type | Coils | Comfort Layer | Cover | Feels & Heights |
|---|---|---|---|---|---|
| Cascade Ridge | 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 RangeTHIS SERIES | 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.
*Dimensions are approximate and may vary slightly. Split King ships as two Twin XL mattresses.
| Brand | Serta® |
|---|---|
| Collection | Perfect Sleeper® (2026) |
| Series | Cascade Range |
| Model Number | 500305213 |
| Feel | Plush Pillow Top |
| Mattress Height | 15" |
| Mattress Type | Innerspring (pillow top) |
| Support System | 920-density Q4™ Support System, 4-in-1 linked coils |
| Zoned Support | 5 Zoned Comfort |
| Comfort Layer | QuiltLoft™ Memory Foam + pillow top |
| Edge Support | BestEdge® Foam Encasement |
| Cover | CoolFeel® Plus Fabric with breathable wool layer |
| Recommended For | Side sleepers who want a deep, plush pillow top |
| 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 |