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Serta iSeries NXG 1500 Luxury Firm Mattress - Cooling Foam Core Support

by Serta
Original price $1,699.99 - Original price $3,399.98
Original price $1,699.99
$1,699.99
$1,699.99 - $3,399.98
Current price $1,699.99

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Free Curbside Shipping: 2 Weeks
White Glove Delivery: 3 Weeks
White Glove Delivery + Removal: 3 Weeks

Complete Your Bed

This mattress pairs with a Serta matching foundation or the Beautyrest Black Luxury adjustable base below. Add one using the "Add an Adjustable Base or Matching Foundation" dropdown above, or view full details here.

The Serta® iSeries® NXG™ 1500 Luxury Firm Mattress is an all-foam design that pairs High-Density NXG™ Memory Foam with a dual-layer CoolFeel™ cooling system in a luxury firm feel built for stomach and back sleepers who want a supportive, minimal-sink surface. Ultimate Edge™ Support keeps the perimeter stable, and the mattress is backed by a 100-night in-home trial and Serta's 10-year limited warranty.

Serta iSeries NXG 1500 Luxury Firm Mattress

All-Foam Support, Engineered Firm

The 1500 Luxury Firm is part of Serta's iSeries® NXG™ collection, built as an all-foam alternative to the hybrid line. A premium high-density foam core does the supporting work under a comfort layer of High-Density NXG™ Memory Foam, giving stomach and back sleepers a smooth, supportive surface with minimal sink.

It's built with a CoolFeel™ Cover, Carbon Fiber Memory Foam, High-Density NXG™ Memory Foam, a premium high-density foam core, and Ultimate Edge™ Support for a stable, edge-to-edge perimeter.

Built For

Certified Quality

CertiPUR-US® Certified Foams

Every foam layer is CertiPUR-US® Certified — tested for content, emissions, and durability, so you can trust what you're sleeping on.

Sleep Position

Stomach & Back Sleepers

The luxury firm feel keeps sink to a minimum, so stomach and back sleepers stay supported and aligned instead of settling into the mattress.

Cooling

Dual-Layer Cooling System

A CoolFeel™ Cover delivers instant cool-to-the-touch comfort while Carbon Fiber Memory Foam pulls heat away from your body all night long.

Why You'll Love the iSeries NXG 1500 Luxury Firm

  • Smooth, supportive all-foam feel — absorbs motion, holds proper alignment
  • Firm, minimal-sink feel — built for stomach & back sleepers
  • Premium high-density foam core — durable, consistent support
  • Stable, reinforced edge — sit and sleep confidently near the perimeter
  • Instant, all-night cooling — CoolFeel™ Cover + Carbon Fiber Memory Foam
  • Superior motion absorption — undisturbed rest for couples
  • CertiPUR-US® Certified foams
  • 100-night in-home trial & 10-Year Limited Warranty

Sizes & Specifications

Available Sizes
  • Twin XL
  • Full
  • Queen
  • King
  • Cal King
  • Split King
Specifications
  • Construction: All-Foam (memory foam over a premium high-density foam core)
  • Mattress Height: 12 inches
  • Feel: Luxury Firm
  • Certification: CertiPUR-US® Certified
  • Warranty: 10-year limited warranty

Engineered for Luxury Firm, All-Night Support

Serta iSeries NXG 1500 Luxury Firm cutaway showing all-foam construction
Construction

What's Inside

  1. 1 CoolFeel™ Cover — instant cool-to-the-touch comfort that activates the moment you lie down.
  2. 2 Carbon Fiber Memory Foam — actively draws heat away from your body for consistent temperature regulation.
  3. 3 High-Density NXG™ Memory Foam — contouring pressure relief with a firm, supportive foundation.
  4. 4 Premium High-Density Foam Core — a durable, consistent support foundation built to hold up over years of use.
  5. 5 Ultimate Edge™ Support — edge-to-edge stability that maximizes your usable sleep surface.
Feel & Support

Built for a Luxury Firm Feel

The 1500 Luxury Firm is the all-foam firm option in the iSeries NXG 1500 line, pairing a premium high-density foam core with a comfort layer of High-Density NXG™ Memory Foam that contours without excessive sink.

Why it matters:

  • Minimal sink — supportive surface for stomach and back sleepers
  • Smooth, all-foam feel — no coil bounce, just consistent support
  • Consistent support — foam core holds its shape night after night
Cooling

CoolFeel™ Dual-Layer Cooling

A CoolFeel™ Cover provides instant cool-to-the-touch comfort, while Carbon Fiber Memory Foam continuously draws heat away from your body throughout the night.

Why it matters:

  • Faster sleep onset — a cool surface helps you fall asleep quicker
  • Consistent temperature — fewer heat-related wake-ups
  • Synergistic design — cover and foam work together all night
Made to Last

Backed for the Long Haul

CertiPUR-US® Certified: every foam layer is tested for content, emissions, and durability. The 1500 Luxury Firm is backed by a 100-night in-home trial and Serta's 10-Year Limited Warranty.

MATTRESS DIMENSIONS

  • Twin XL

    39" wide x 79.5" long
    12" High

    Weight: 94.62 lbs

  • Full

    54" wide x 74.5" long
    12" High

    Weight: 120.11 lbs

  • Queen

    60" wide x 79.5" long
    12" High

    Weight: 140.01 lbs

  • King

    76" wide x 79.5" long
    12" High

    Weight: 175.69 lbs

  • Cal King

    72" wide x 83.5" long
    12" High

    Weight: 174.95 lbs

  • Split King (2 mattresses)

    39" wide x 79.5" long (each piece)
    12" High

    Weight: 94.62 lbs (each piece)

*Dimensions of each individual mattress may vary slightly.

SPECIFICATIONS

  • Construction: All-Foam — memory foam comfort layers over a premium high-density foam core (CoolFeel™ Cover, Carbon Fiber Memory Foam, High-Density NXG™ Memory Foam, Ultimate Edge™ Support)
  • Mattress Height: 12 inches
  • Feel: Luxury Firm
  • Certification: CertiPUR-US® Certified
  • Warranty: 10-year limited warranty
  • Care: Spot clean only — do not apply liquids directly to the mattress. Blot soiled areas with baking soda, let stand about 15 minutes, then vacuum; air out as much as possible. Use a mattress protector and rotate periodically for even wear.

10 Year Limited Warranty

Serta® mattresses or foundations used with proper support are protected by a 10 year limited manufacturer’s warranty. Serta products are warrantied against manufacturing defects in workmanship and material (excluding covers and handles, except for handles on iSeries and equivalent level mattresses).

Exclusions

    Comfort Preference
  • Bedding sold “as is”, or floor samples, or bedding purchased from second hand parties, non-retail establishments or received as a promotional item.
  • Bedding height
  • Corner guards
  • Bent perimeter border rods due to moving or bending the sleep set for innerspring models
  • Replacement of another piece in a sleep set unless it is also defective
  • Damage of the mattress or foundation due to misuse or abuse
  • Mattress damage due to an inappropriate foundation or when an incorrect bed frame is used
  • Sheet fit
  • Fabric Stains, soiling, fluid penetration, tears or burns
  • Adjustable foundations (see owner’s manual for details on warranty coverage)
  • Mattress fabric (except as noted in the Warranty Coverage Detail section for an All Foam mattress)
  • Zippered mattress cover damage due to improper care including removal of cover
  • Normal change in softness and recovery time associated with memory foam and latex materials over time. This does not affect the pressure relieving qualities of these materials.
  • Body impressions in the mattress that measure less than ¾" for all smooth top (non-quilted) hybrid mattresses and All Foam model mattresses.
  • Sagging in the mattress that measure less than less than ¾" for all smooth top (non-quilted) hybrid mattresses and All Foam model mattresses.

Term

The warranty coverage runs from the original date of purchase. Replacement of the mattress or foundation does not extend its limited warranty or begin a new limited warranty period. Your warranty period is based on the code printed on your white law label as indicated on the Warranty Code Chart. The duration of any applicable implied warranties, including but not limited to the implied warranties of merchantability and fitness, shall not exceed the term of this limited warranty. (Some states do not allow limitations on how long an implied warranty lasts, so this limitation may not apply to you.) Serta® shall not be liable for incidental or consequential damages that result from the use of your Serta® product. (Some states do not allow the exclusion or limitation of incidental or consequential damages, so this exclusion may not apply to you.) No expressed or implied warranties are extended to persons who purchase the product from anyone other than Serta Simmons Bedding Company or its authorized dealers, and all warranties to such persons, including the implied warranties of merchantability and fitness, are hereby excluded.

Service

If your Serta® mattress or foundation fails due to a manufacturing defect, the exclusive remedy under this warranty will be replacement of the defective product in the U.S., Puerto Rico or U.S. Virgin Islands. If the Serta® product you purchased is discontinued at the time of replacement, a current model of comparable quality and value will be selected. To receive service under the terms of this warranty contact your original Serta® dealer. If your original Serta® dealer is no longer in business or you have moved outside the service area, please contact Serta Customer Service at 1-888-55-SERTA (1-888-557-3782) between the hours of 9am to 5pm EST Monday - Friday. A copy of original bill of sale is needed to determine original date of purchase. Model name label and law label must be provided to identify the bedding and validate this warranty.

Your Rights Under State Law

This warranty gives you specific rights, and you may have other rights, which vary from state to state. This warranty is extended only to the original purchaser from Serta Simmons Bedding Company or its authorized dealers.