Comfort IQ™ · Scored on what actually matters
SERTA® Perfect Sleeper® 13.5″ Plush Pillow Top Mattress — Performance & Feel
Comfort IQ™ scores eight dimensions 0–10 from National Mattress's in-house testing + construction — the same scale on every model, so two beds compare on what actually matters. Results vary by body type, base, and room temperature.
The Serta Perfect Sleeper 13.5″ Plush Pillow Top keeps its temperature in check despite a soft surface, scoring 9.4/10 on cooling with peak surface temperature held to the 29.1-31.8 °C range. A CoolFeel cover and airflow through 850 pocketed coils keep heat moving, and the plush feel cradles deeply — pressure relief scores 9.3/10 with a strong reinforced edge (9.3/10). It is the most accessible plush in the Perfect Sleeper line, set to a soft 3/10 and tuned for the lighter side sleeper who wants to settle into a deep, pressure-melting cradle. The reinforced perimeter is a real bonus on a bed this soft, giving you firm, usable support right out to the rim. For a side sleeper after a cool, deeply cushioning plush bed at an approachable price, this hits the mark.
Performance Scores
The entry into a real coil-based plush — runs cool, cradles deeply and holds a strong edge; the soft spot is spinal alignment that comes with a feel this soft over the lineup's lightest comfort layer.
Pressure Relief9.3
A deep 2.92-inch settle cradles shoulders and hips for a wrapped, forgiving feel.
Edge Support9.3
A foam-encased coil core keeps the perimeter usable beneath the soft surface.
Cooling9.2
CoolFeel cover plus coil airflow keep a soft pillow top from overheating.
Responsiveness8.9
A livelier surface than the soft feel suggests — the coil core does the bouncing.
Motion Isolation8.1
Plush layers plus 850 isolated coils keep a partner's turn from carrying over.
Durability6.5
A resilient 850-coil base; the lineup's lightest comfort layer is what softens first.
Spinal Support6.4
Zoned coils underneath, but the soft top lets the hips drop — best for lighter side sleepers.
Off-Gassing 9.0 Brand 8.8 Sleep Trial 10.0 Value 6.2
In National Mattress's in-house Comfort IQ analysis, the Serta Perfect Sleeper 13.5″ Plush Pillow Top scores: Overall 8.4/10, Cooling 9.2/10, Pressure Relief 9.3/10, Motion Isolation 8.1/10, Edge Support 9.3/10, Responsiveness 8.9/10, Spinal Support 6.4/10, Durability 6.5/10.
Best For
Warm sleepers who want it soft — cooling scores 9.2/10, with peak surface temperature held to the 29.1-31.8 °C range despite the plush pillow-top surface.
Lighter side sleepers wanting a cushioned cradle — pressure relief scores 9.3/10 with a 2.92-inch settle that unloads the shoulder and hip.
Couples who use the whole surface — edge support scores 9.3/10, so the perimeter stays usable when you sit or sleep near the side.
First-time buyers of a coil-based plush — the entry Perfect Sleeper pillow top pairs a true 850-coil core with a 365-night trial.
Considerations
Spinal support reads fair (6.4/10). The soft, deep-sinking surface lets the hips drop more than is ideal for level alignment — back, stomach and heavier sleepers generally want a firmer feel.
Durability is good, not great (6.5/10). The 850-coil base resists sag, but this is the lineup's lightest comfort layer — a plush top like this is the kind most prone to softening earlier than a firmer one.
How It Performs — The Measured Detail
Feel & Firmness · 3/10 Plush
The Perfect Sleeper 13.5″ sits clearly on the soft side, a 3 out of 10. A pillow-top comfort layer of poly and memory foam gives the surface its sink-in feel, over 850 pocketed coils that keep real support below. It is the most accessible plush in the line, aimed at the lighter sleeper who wants a forgiving cradle rather than a firm, on-top surface.
Cooling 9.2
Despite a soft pillow-top surface, the Perfect Sleeper 13.5″ keeps temperatures in check, with peak surface temperature measured in the 29.1-31.8 °C range overnight — toward the warmer end, since a plush top puts more foam against the body — settling to the 23.3-27.4 °C range by morning, a rise over baseline in the 7.1-9.8 °C range. The CoolFeel Fabric cover and airflow through the 850-coil pocketed core keep it from overheating. A reasonable pick for most; anyone who runs especially hot may prefer a firmer model with less foam between them and the springs.
Pressure Relief 9.3
Relieving pressure is what this plush Serta does best, with measured sinkage of 2.92 inches — deeper than a typical mattress — for an enveloping cradle. The poly and memory comfort layers let shoulders and hips settle in while the zoned pocketed coils flex beneath the heaviest points. Lighter side sleepers, and anyone craving a cushioned, wrapped feel rather than firm on-top support, are the natural fit for a surface this forgiving.
Motion Isolation 8.1
Movement stays nicely contained here, with peak transferred motion measured at 3.31 m/s² — well below a typical hybrid — settling within the 0.95-1.17 seconds range. The plush comfort layers cushion the disturbance the moment it occurs, and the 850 isolated pocketed coils each compress on their own rather than carrying motion across the surface. A partner turning over or climbing out of bed sends little ripple to your side, an easy pick for light sleepers sharing a bed.
Edge Support 9.3
The perimeter holds up well for a soft pillow top, with edge sinkage measured at 4.98 inches near the rim. A foam encasement wraps the 850-coil core to give the underlying structure, so the side stays usable even though the plush surface means the very rim gives way more than a firmer bed would. You can sit on the side or sleep close to it without the perimeter collapsing under you.
Responsiveness 8.9
For a soft pillow top, this bed has a livelier surface than you might guess, with bounce travel measured at 7.49 inches — most of it from the coil core rather than the thin foam top. The trade-off is recovery speed: complete foam rebound settles in under 2.57 seconds, on the slower side, so the plush surface eases back rather than springing you up. It is responsive enough to reposition on, but the overall character is a soft, sink-in feel — better for a sleeper who settles in than a restless one.
Off-Gassing 9.0
Almost nothing to air out here. The initial smell registers low and the off-gassing period clears in under 12 hours, far quicker than a typical new mattress. The foams hold CertiPUR-US certification — independently tested for low VOCs — and this Serta is built in Ontario and delivered flat in a plastic bag rather than compressed in a box, so very little odor is trapped to release on arrival. The bed is fiberglass-free as well, so there is no glass-fiber sock to handle carefully.
Sleep Position & Body Weight Fit
Lighter side sleepers are the core fit — their weight stays cradled in the deep 2.92-inch settle without overloading the soft top, and the surface unloads the shoulder and hip. Back sleepers who like it soft will be comfortable but should weigh the modest 6.4/10 alignment. Stomach sleepers and heavier bodies generally want a firmer feel than this entry plush offers.
At a Glance
Type · Hybrid Firmness · 3/10 Plush Height · 13.5″ Comfort layer · 2″ Fiberglass-free CertiPUR-US certified Made in · Canada Trial · 365 nights Delivery · Free on orders over $199
Full construction, per-size dimensions and coil counts are in the product description above. View 365-night trial details.
Frequently Asked
Does the Serta Perfect Sleeper 13.5″ Plush Pillow Top sleep hot?
No, not for a plush. Cooling scores 9.2/10, with peak surface temperature measured in the 29.1-31.8 °C range. A CoolFeel cover plus airflow through the 850 pocketed coils keep it from overheating; anyone who runs especially hot may still prefer a firmer model with less surface foam.
Is the Perfect Sleeper 13.5″ Pillow Top good for side sleepers?
Yes, especially lighter side sleepers. Pressure relief scores 9.3/10 with a deep 2.92-inch cradle that unloads the shoulder and hip. Heavier bodies and strict back or stomach sleepers generally want a firmer surface to keep the spine level.
How firm is the Serta Perfect Sleeper 13.5″ Plush Pillow Top?
It is soft — a 3 out of 10. The pillow-top comfort layer of poly and memory foam gives a forgiving, sink-in feel over an 850-coil core. It suits lighter side sleepers who want to be cradled, rather than back or stomach sleepers who need firm hip lift.
Can I sit on the edge of the Perfect Sleeper 13.5″ without it collapsing?
Yes. Edge support scores 9.3/10, with edge sinkage measured at 4.98 inches. A foam encasement wraps the 850-coil core to keep the perimeter usable, so you can sit on the side or sleep close to it; the very rim still softens, as expected on a plush surface.
Can I try the Perfect Sleeper 13.5″ at home before buying?
Yes. It comes with a 365-night sleep trial — one of the longest available — plus free delivery on orders over $199. Soft beds especially deserve a long runway, since it takes weeks to learn whether a deep cradle suits you night after night.
