Serta iSeries NXG 1500 12-inch Luxury Firm memory foam mattress on a modern wooden bed frame. Serta iSeries NXG 1500 12" Luxury Firm mattress with blue geometric cooling cover on a plain background. Internal foam layers of the Serta iSeries NXG 1500 memory foam mattress designed for pressure relief. Serta iSeries NXG 1500 luxury firm mattress showing spinal alignment for back and stomach sleepers. Serta iSeries NXG 1500 luxury firm memory foam mattress set with a matching low-profile foundation. Side profile of the 12-inch Serta iSeries NXG 1500 memory foam mattress with navy blue border. Top-down view of the breathable geometric cooling cover on a Serta iSeries NXG 1500 mattress. Front view of the 12-inch iSeries NXG 1500 Luxury Firm mattress featuring cooling memory foam. Serta iSeries NXG 1500 Luxury Firm mattress firmness scale for stable and supportive sleep. Layer diagram of Serta iSeries NXG 1500 mattress showing edge-to-edge support and cooling technology.
Serta iSeries NXG 1500 Luxury Firm Memory Foam 12 Inch Mattress
Plush Medium Firm Pillow top Memory foam Hybrid

Serta iSeries NXG 1500 Luxury Firm Memory Foam 12 Inch Mattress

$1,899.00
$2,699.00
Save $800.00
Brand: Serta
i Size Guide
$1,899.00
Only 17 left in stock
Free USA Wide Delivery Free USA Wide Delivery
10 Year Warranty 10 Year Warranty
Advanced Technology Advanced Technology

To begin with, the Serta iSeries NXG 1500 Luxury Firm Mattress greets you with a breathable knit cover that feels cool when you first lie down. 

Next, proprietary NXG Next Generation Memory Foam infused with gel disperses excess warmth and offers responsive contouring that serious back sleepers praise. Because this comfort foam rests on a Duet coil-in-coil support system, you receive superior spinal alignment support that keeps your hips level while cushioning your shoulders. 

Moreover, the individually wrapped coils absorb movement, so couples experience minimized partner motion transfer even when one sleeper turns. High-density foam rails encase the perimeter, creating a durable edge that maximises usable surface. 

Finally, you can buy Serta iSeries NXG 1500 online with free shipping in the USA and easy financing, locking in a limited-time Memorial discount on a 12-inch luxury firm hybrid mattress before stock runs low.

Luxury Firm Support

Dense NXG foam and Duet coils keep the spine neutral for back and stomach sleepers.

5-Zone Pressure Relief

Coil-in-coil design tailors push-back under shoulders, lumbar, and hips.

Gel-Enhanced Heat Control

Gel beads and ventilated foam create an advanced heat dissipation pathway for cooler rest.

Motion-Quiet Hybrid Core

Pocketed springs flex individually, limiting partner disturbance.

Reinforced Foam Encasement

High-density edge lets you sit or sleep to the perimeter without roll-off.

Risk-Free Trial & Warranty

120-night trial and 10-year warranty add peace of mind.

Key Mattress Benefits
Serta iSeries NXG 1500 Luxury Firm Memory Foam 12 Inch Mattress

6 Layers
Of Cooling
Comfort

Breathable fabric promotes airflow and resists heat build-up.

Responsive foam contours deeply while whisking warmth away.

High-density layer spreads body weight and protects coils beneath.

Individually wrapped inner coil nests inside a second coil, delivering adaptive lift and zoned pressure relief.

Robust rails surround the coil unit for edge-to-edge durability.

Firm bottom foam anchors the entire structure for long-term performance.

Serta iSeries NXG 1500 Luxury Firm Memory Foam 12 Inch Mattress
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Designed for deep comfort and better rest, so you wake up refreshed and ready for the day

It is a hybrid. NXG memory foam layers sit atop a Duet coil-in-coil spring unit, blending foam comfort with coil support.

Many back sleepers find a luxury firm ideal because it cushions the surface yet keeps the lumbar region level, helping reduce morning stiffness.

Gel infusion and an open-cell structure work with a breathable cover to move heat away, assisting temperature regulation.

The full profile measures 12 inches from the cover’s peak to the base.

Yes. The hybrid build flexes smoothly on most contemporary adjustable foundations, as long as slat gaps stay under three inches.

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