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  • Serta iSeries NXG 1500 Luxury Firm mattress with layers and features highlighted on a blue background
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  • Blue Serta iSeries NXG mattress with brand logo on a white background
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Serta® iSeries® NXG™ Mattress - 1500 Firm Foam

Serta® iSeries® NXG™ Mattress - 1500 Firm Foam

A Firm mattress featuring high-density memory foam, NXG™ Memory Foam delivers deep, contouring pressure relief. A CoolFeel® Fabric offers instant cooling, while Carbon Fiber Memory Foam draws heat away from the body for all-night comfort. Plus, Serta® Balanced Support Foam and a high-density foam core provide durable support with Ultimate Edge™ Support.
$1,599.00
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  • Free shipping and returns Free shipping & returns
  • 10-year limited warranty 3-year limited bedding warranty

Overview

Feel

Luxury Firm

Support

Premium, high-density foam core surrounded with Ultimate Edge™ Support for lasting, edge-to-edge mattress stability

Pressure Relief

Innovative, high-density, premium memory foam for deep, contouring pressure relief

Cooling

Topped with a cool-to-the-touch CoolFeel™ Cover and Carbon Fiber Memory Foam draws heat away from the body

Motion Control

Designed to minimize the impact of your partner's movement

Made for

Great for stomach or back sleepers

Details

Materials & Construction

This Firm mattress offers a series of benefits for the sleep you want. Experience immediate cooling, instant pressure relief, and ideal support for a deeper, more restful sleep at a price that makes sense. High-density NXG™ Memory Foam delivers deep, contouring pressure relief. A cool-to-the-touch cover offers immediate cooling, while Carbon Fiber Memory Foam draws heat away from the body for all-night comfort. Plus, a high-density foam core provides durable support.

  • NXG Memory Foam: Innovative, high-density, premium memory foam for deep, contouring pressure relief
  • CoolFeel™ Fabric: Get that “ahh” right as you lie down with a cool-to-the-touch cover that provides immediate cooling, so you can fall asleep faster
  • Carbon Fiber Memory Foam: Contours as it cools to relieve pressure and channel heat away from the body for a more restful night’s sleep
  • Serta® Balanced Support Foam: A layer of support foam helps provide the ideal balance of cushioning and support for refreshing sleep.
Responsibly crafted
  • CertiPUR-US® Certified means our foam was tested for and is free from harmful chemicals and gasses
  • Made in the U.S.A. with global components
Care
  • To protect your mattress from stains and spills, we highly recommend using a mattress protector; this will also help with the overall health and lifespan of your mattress.
  • We do not recommend applying liquids to the product; Applying liquids may stain the fabric and make the soiled area worse; Moisture or chemicals applied directly to the mattress can cause premature breakdown of the foam and damage the product.
  • We suggest applying baking soda to the soiled area, let stand about 15 minutes, vacuum, and repeat as needed; Air the product out as much as possible.
Compatibility
  • Adjustable base compatible, as well as most frames and foundations, including: traditional frames, box springs, platform frames, slatted frames, bunky boards.

Shipping & Returns

Shipping

We will ship your order using the fastest, safest, and most reliable method possible. When ordering directly through Serta.com, most of our items will arrive to your home in 2-4 weeks. Typically, within 1 week of your order being placed, our delivery partner, RXO Logistics, will contact you to schedule out a delivery date and time based on when they expect to receive the product(s). Please note, we are not shipping to Alaska and Hawaii at this time.

Free White Glove Delivery & Haul Away

Get fast, professional in‑home setup and free removal of your old mattress. Perfect for shoppers searching for easy mattress delivery, no setup, and free haul‑away service—everything you need for a hassle‑free upgrade.

Warranty

You should be able to rely on the quality of your rest night after night. That is why we offer a 10-year limited warranty that covers manufacturing and workmanship defects. If you do notice anything out of the ordinary, simply email us or call us at 1-888-557-3782 and we’ll work with you to find a solution.

Returns

Any purchase directly from Serta.com is covered under our 100-Day In-Home Trial. Starting on the day of delivery, we recommend sleeping on your new mattress for a minimum of 30 days to allow your body to adjust. In the event you decide this mattress isn't right for you, and you’re within the 100-Day In-Home Trial, contact us by phone or e-mail and we can coordinate a return. Please note that the 100-Day In-Home Trial applies only to purchases made on Serta.com.

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FAQs

What is included in the Serta Classic™ Bedding Bundle?

The Serta Classic™ Bedding Bundle will include a sheet set (with a flat sheet, fitted sheet, and pillowcases), down alternative pillows, and a mattress protector.

Please note the twin and twin xl Serta Classic™ Bundle includes 1 pillow and 1 pillowcase.

558

Very soft and comfortable

We love the Serra brand, this s our third Serra mattress

Loretta T551

Very comfortable and solid

This is a very nice and solid mattress. I got it to give my son a bed upgrade, he loves it and says it very comfortable to him. As you can see the dog likes it too. It helps him sleep much ch better at night so I’m happy.

LeanettaS551
Incentivised Badge - Native reviews
true
  • Very comfortable and solidThis is a very nice and solid mattress. I got it to give my son a bed upgrade, he loves it and says it very comfortable to him. As you can see the dog likes it too. It helps him sleep much ch better at night so I’m happy.https://photos-us.bazaarvoice.com/photo/2/cGhvdG86c2VydGE/09ee53c7-979d-5bf7-9f2a-4eeb51d516cd

Firm, supportive, and comfortable mattress that no

This mattress exceeded my expectations. The Serta iSeries NXG 1500 Luxury Firm provides excellent support while still feeling comfortable. It’s firm but not hard, which helps keep my spine aligned and reduces pressure points. I noticed an improvement in my sleep quality after just a few nights, especially less back stiffness in the morning. The mattress feels very sturdy and well-made, with no sagging so far. It is quite heavy, which shows the quality of materials, but once placed it stays perfectly in position. I also appreciate that it feels stable and safe when moving or getting out of bed. Overall, it feels like a durable, high-quality mattress designed for long-term use.

irinam78_245551
Incentivised Badge - Native reviews
true
  • Firm, supportive, and comfortable mattress that no (Image 17544557)This mattress exceeded my expectations. The Serta iSeries NXG 1500 Luxury Firm provides excellent support while still feeling comfortable. It’s firm but not hard, which helps keep my spine aligned and reduces pressure points. I noticed an improvement in my sleep quality after just a few nights, especially less back stiffness in the morning. The mattress feels very sturdy and well-made, with no sagging so far. It is quite heavy, which shows the quality of materials, but once placed it stays perfectly in position. I also appreciate that it feels stable and safe when moving or getting out of bed. Overall, it feels like a durable, high-quality mattress designed for long-term use.https://photos-us.bazaarvoice.com/photo/2/cGhvdG86c2VydGE/fc1a6cf8-b408-5bbf-9af4-d2545c0b684f
  • Firm, supportive, and comfortable mattress that no (Image 17544558)This mattress exceeded my expectations. The Serta iSeries NXG 1500 Luxury Firm provides excellent support while still feeling comfortable. It’s firm but not hard, which helps keep my spine aligned and reduces pressure points. I noticed an improvement in my sleep quality after just a few nights, especially less back stiffness in the morning. The mattress feels very sturdy and well-made, with no sagging so far. It is quite heavy, which shows the quality of materials, but once placed it stays perfectly in position. I also appreciate that it feels stable and safe when moving or getting out of bed. Overall, it feels like a durable, high-quality mattress designed for long-term use.https://photos-us.bazaarvoice.com/photo/2/cGhvdG86c2VydGE/1f3f5fe9-7843-5742-bd07-5096b99824b2
  • Firm, supportive, and comfortable mattress that no (Image 17544559)This mattress exceeded my expectations. The Serta iSeries NXG 1500 Luxury Firm provides excellent support while still feeling comfortable. It’s firm but not hard, which helps keep my spine aligned and reduces pressure points. I noticed an improvement in my sleep quality after just a few nights, especially less back stiffness in the morning. The mattress feels very sturdy and well-made, with no sagging so far. It is quite heavy, which shows the quality of materials, but once placed it stays perfectly in position. I also appreciate that it feels stable and safe when moving or getting out of bed. Overall, it feels like a durable, high-quality mattress designed for long-term use.https://photos-us.bazaarvoice.com/photo/2/cGhvdG86c2VydGE/62ac3a29-8564-5000-92f3-2d29711db40e

Luxurious yet Comfortable

Was very surprised to see that the mattress wasn't rolled up like most other foam mattresses. Instructions and setup was very simple and actually self explanatory. The Mattress is of very good quality and made well... Luxurious and Firm, yet very comfortable. I've noticed how cool I stay sleeping on this mattress versus my old one, and it's firm support has helped with my back pain. I can recommend.

danakebsch13_1343551
Incentivised Badge - Native reviews
true
  • Luxurious yet ComfortableWas very surprised to see that the mattress wasn't rolled up like most other foam mattresses. Instructions and setup was very simple and actually self explanatory. The Mattress is of very good quality and made well... Luxurious and Firm, yet very comfortable. I've noticed how cool I stay sleeping on this mattress versus my old one, and it's firm support has helped with my back pain. I can recommend.https://photos-us.bazaarvoice.com/photo/2/cGhvdG86c2VydGE/c6a0d101-c04c-5c05-89c1-52822a246f8c

Mattress just works! Super comfy

Honestly? This mattress just works. It’s firm-leaning but not punishing — that “just-right” kind of feel if you don’t like plush, sink-in beds. The first thing you’ll probably notice is the cool cover and that gentle hug from the foam — it keeps you comfy without feeling like you’re being swallowed up.

mamasash_9587551
Incentivised Badge - Native reviews
true
  • Mattress just works! Super comfy (Image 17361140)Honestly? This mattress just works. It’s firm-leaning but not punishing — that “just-right” kind of feel if you don’t like plush, sink-in beds. The first thing you’ll probably notice is the cool cover and that gentle hug from the foam — it keeps you comfy without feeling like you’re being swallowed up.https://photos-us.bazaarvoice.com/photo/2/cGhvdG86c2VydGE/f3664e15-0bb9-506f-973a-924e4b415969
  • Mattress just works! Super comfy (Image 17361141)Honestly? This mattress just works. It’s firm-leaning but not punishing — that “just-right” kind of feel if you don’t like plush, sink-in beds. The first thing you’ll probably notice is the cool cover and that gentle hug from the foam — it keeps you comfy without feeling like you’re being swallowed up.https://photos-us.bazaarvoice.com/photo/2/cGhvdG86c2VydGE/15b0496b-87a1-5553-9349-7df6035b0b26

Luxurious and Firm but very comfortable

(I was able to purchase this mattress at a discounted price) This mattress from Serta was even better than I expected! The blue fabric feels luxurious and is beautiful. I was worried it was too firm at first, and woke up sore for a bit. Took about a week but Once I broke in the mattress and my body adjusted, this mattress is perfect! My smart watch sleep scores have been in the 90s, all higher than previously. I’m a stomach/back and sometimes side sleeper. Safe to say I have been getting more restful sleep!

jodieh36_5981551
Incentivised Badge - Native reviews
true
  • Luxurious and Firm but very comfortable(I was able to purchase this mattress at a discounted price) This mattress from Serta was even better than I expected! The blue fabric feels luxurious and is beautiful. I was worried it was too firm at first, and woke up sore for a bit. Took about a week but Once I broke in the mattress and my body adjusted, this mattress is perfect! My smart watch sleep scores have been in the 90s, all higher than previously. I’m a stomach/back and sometimes side sleeper. Safe to say I have been getting more restful sleep!https://photos-us.bazaarvoice.com/photo/2/cGhvdG86c2VydGE/5c1f597e-6cbf-5bf1-b6d2-d76074807b7b

Best Rest for Less

We love our New Mattress

Anthony R551

What a great luxury mattress

What a luxury experience with this mattress! It’s cool to touch material that keeps my body temperature at the perfect level all night long. It also has great level of firmness, it’s firm enough to give my back pain relief, but at the same time not too tough, still cradles the body. Amazing support and beautiful design.

alyonkashe_6974551
Incentivised Badge - Native reviews
true
  • What a great luxury mattress (Image 17253566)What a luxury experience with this mattress! It’s cool to touch material that keeps my body temperature at the perfect level all night long. It also has great level of firmness, it’s firm enough to give my back pain relief, but at the same time not too tough, still cradles the body. Amazing support and beautiful design.https://photos-us.bazaarvoice.com/photo/2/cGhvdG86c2VydGE/d227c699-1071-5060-9a3a-9ffeda4f2605
  • What a great luxury mattress (Image 17253567)What a luxury experience with this mattress! It’s cool to touch material that keeps my body temperature at the perfect level all night long. It also has great level of firmness, it’s firm enough to give my back pain relief, but at the same time not too tough, still cradles the body. Amazing support and beautiful design.https://photos-us.bazaarvoice.com/photo/2/cGhvdG86c2VydGE/31b5d0a1-0524-5083-bfdc-d8a8333ef892
  • What a great luxury mattress (Image 17253568)What a luxury experience with this mattress! It’s cool to touch material that keeps my body temperature at the perfect level all night long. It also has great level of firmness, it’s firm enough to give my back pain relief, but at the same time not too tough, still cradles the body. Amazing support and beautiful design.https://photos-us.bazaarvoice.com/photo/2/cGhvdG86c2VydGE/b7fff5b6-0ab3-5517-9637-7e74f719f256
  • What a great luxury mattress (Image 17253569)What a luxury experience with this mattress! It’s cool to touch material that keeps my body temperature at the perfect level all night long. It also has great level of firmness, it’s firm enough to give my back pain relief, but at the same time not too tough, still cradles the body. Amazing support and beautiful design.https://photos-us.bazaarvoice.com/photo/2/cGhvdG86c2VydGE/ddc5b65e-42a6-5c0e-bc01-a2276b21f3bf