SERTA® iComfort® PRO 12.5" Plush All-Latex Mattress

Comfort IQ™ · Scored on what actually matters

SERTA® iComfort® PRO 12.5″ Plush Latex 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.

Built on a True Response Latex Foam Core, the Serta iComfort PRO 12.5″ Plush Latex Mattress is engineered to last — Durability scores a perfect 10.0, anchored in latex from the comfort layer right through to the support base. That all-latex construction also runs cool (Cooling 10.0) and recovers fast (Responsiveness 10.0), inside a plush 3-out-of-10 cradle. It is a rare trio — perfect cooling, perfect responsiveness, perfect durability — wrapped in a soft, breathable hug. For lighter and side sleepers who want a plush, cool, lively latex bed built to last for years, this is a top-tier choice.

Performance Scores

In National Mattress's in-house Comfort IQ analysis, the iComfort PRO 12.5″ Plush Latex scores: Overall 8.8/10, Cooling 10.0/10, Pressure Relief 9.2/10, Motion Isolation 7.6/10, Edge Support 8.3/10, Responsiveness 10.0/10, Spinal Support 5.8/10, Durability 10.0/10.

Best For

Considerations

How It Performs — The Measured Detail

Feel & Firmness · 3/10 Plush

A plush 3 out of 10, this bed is latex from top to bottom — a latex comfort layer over a True Response Latex Foam Core. That gives it a distinctive feel: a soft, settled cradle that stays quick and alive underneath rather than dragging you down. It works with the body rather than swallowing it, which is the signature of an all-latex build versus a memory-foam plush.

Cooling 10.0

Peak surface temperature on the iComfort PRO 12.5″ Plush Latex holds at 32.1°C in our test, sitting in the heart of the pack for an all-latex bed with no springs underneath. With a True Response Latex Foam Core in place of coils, every degree of cooling comes from the upper materials, and they pull their weight: a CoolFeel Pro cover with anti-microbial fibre over a natural-latex comfort layer, latex being the breathable, cooler-sleeping cousin of memory foam. The climb over baseline lands 8.3–11.1°C, toward the warmer end, so it leans a shade warm in absolute terms even while the peak stays competitive.

Pressure Relief 9.2

Tuned to a 3-out-of-10 firmness, this is a plush bed built to cradle, and it sinks 2.66 inches in our test — inside a 1.79–2.80 inch range that confirms the deep-relief feel. The natural latex up top lets shoulders and hips settle in and spread their load rather than concentrating pressure at the heaviest points — a plush, enveloping hug rather than a shallow contour. Side sleepers and lighter bodies will love how it relieves the joints; heavier sleepers needing more lift underneath may find it cradles deeper than they prefer.

Motion Isolation 7.6

Couples sharing this bed will barely register each other moving. Motion transfer measures 0.84–4.13 m/s² in our test, with the surface settling in 0.84–1.05 seconds — comfortably inside the quiet zone. An all-foam build is the textbook setup for isolation: the latex core soaks up a partner's shifts before they ripple across. The asterisk is latex itself, which is naturally more elastic than memory foam and lets a hair more movement through. The net result still sits firmly in the very-good tier for anyone bothered by a restless partner.

Edge Support 8.3

The perimeter is all foam with no coil rail, and edge sinkage measures 5.66 inches in our test within a 4.73–6.79 inch range — the border yields more under concentrated weight than a coil-encased bed. Perching on the edge to dress, you will feel the side give. The redeeming detail is that the hands-on lying-support check tested Good, so you can sleep right up to the border without rolling into a dip. For full-width sleeping comfort, this is perfectly serviceable.

Responsiveness 10.0

This is a quick, alive surface that works with you rather than swallowing you. Bounce total travel measures 5.27–10.00 inches, and the recovery is the standout: full recovery lands in the 0.79–4.59 sec. band, with this bed at the sharp, fast end — our measurement came back near 0.4 seconds. That is the signature of natural latex, which springs back the instant pressure lifts instead of holding a slow-filling dent. Roll over, shift position, get up — the bed responds immediately. If the sinking feel of traditional memory foam is a dealbreaker, this latex surface is built for the opposite.

Off-Gassing 10.0

There is essentially nothing to off-gas — it clears in under 7 hours, well under the typical mattress. The comfort surface is natural latex layered with natural fibres, nearly odorless from the moment you unpackage it, with none of the petrochemical smell fresh memory foam can carry. Any foam in the build is CertiPUR-US certified, so the faint settling scent that does exist dissipates fast. Give it a day to breathe and it is ready — one of the cleanest beds to bring home in the category.

Sleep Position & Body Weight Fit

Best for side sleepers and lighter bodies, who stay well supported in the plush cradle (Pressure Relief 9.2). At a 3/10 feel over a uniform latex base, heavier sleepers and strict back sleepers can let the hips drop (Spinal Support 5.8). Lighter and average-weight side sleepers are the core fit; anyone needing firm, zoned reinforcement should consider a firmer or coil-backed bed.

At a Glance

Full construction, per-size dimensions and layer detail are in the product description above. View 365-night trial details.

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