Serta iSeries NXG Collection

Experience a series of benefits delivering immediate cooling, instant pressure relief, and ideal support for a deeper, more restful sleep at a price that makes sense. Featuring high-density memory foam, NXG Memory Foam for deep, contouring pressure relief.

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Serta® iSeries® NXG™ Mattress - 1500 Firm Foam

Blue Serta iSeries NXG mattress on a wooden bed frame with a dark blue wall and white pendant lights. Serta iSeries NXG 1500 Luxury Firm mattress with layers and features highlighted on a blue background

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Mattress

  • Sizes

  • Twin XL
  • Full
  • Queen
  • King
  • Cal King

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Serta® iSeries® NXG™ Mattress - 2500 Plush Foam

Blue Serta iSeries NXG mattress on a wooden bed frame with pillows against a blue wall. Serta iSeries NXG 2500 Plush mattress with layers and features highlighted on a blue background

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Mattress

  • Sizes

  • Twin XL
  • Full
  • Queen
  • King
  • Cal King

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Serta® iSeries® NXG™ Mattress - 3500 Medium Foam

Bed frame with a blue Serta iSeries NXG mattress topper in a bedroom setting Serta iSeries NXG 3500 Medium mattress with layers labeled and text about features on a blue background

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Mattress

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  • Twin XL
  • Full
  • Queen
  • Split Head Queen
  • King
  • Split Head King
  • Cal King

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Serta® iSeries® NXG™ Mattress - 4500 Ultra Plush Foam

Blue Serta iSeries NXG mattress with a brand logo on a wooden bed frame in a bedroom setting. Serta iSeries NXG 4500 Ultra Plush mattress with features highlighted on a blue background

  • Colors

Mattress

  • Sizes

  • Twin XL
  • Full
  • Queen
  • Split Head Queen
  • King
  • Split Head King
  • Cal King

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Serta® iSeries® NXG™ Mattress - 1500 Hybrid Firm

Blue Serta iSeries NXG Hybrid mattress on a wooden bed frame with pillows in a bedroom setting. Serta iSeries NXG 1500 Hybrid Firm mattress with features highlighted on a blue background

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Mattress

  • Sizes

  • Twin XL
  • Full
  • Queen
  • King
  • Cal King

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Serta® iSeries® NXG™ Mattress - 2500 Hybrid

Blue Serta® iSeries® NXG™ Mattress mattress on a wooden bed frame with a gray wall and nightstands. Blue iSeries® NXG Hybrid mattress with a brand logo on a wooden bed frame against a blue wall.

  • Colors

  • Sizes

  • Twin XL
  • Full
  • Queen
  • King
  • Cal King

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Serta® iSeries® NXG™ Mattress - 3500 Hybrid

Blue Serta® iSeries® NXG™ mattress on a wooden bed frame with a dark blue wall and wooden nightstands. Blue Serta® iSeries® NXG™ mattress with a visible brand logo on a wooden bed frame in a bedroom setting.

  • Colors

Mattress

  • Sizes

  • Twin XL
  • Full
  • Queen
  • Split Head Queen
  • King
  • Split Head King
  • Cal King

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Serta® iSeries® NXG™ Mattress - 4500 Hybrid Ultra Plush

Blue Serta® iSeries® NXG™ mattress with brand logo on a wooden bed in a bedroom setting Serta iSeries NXG 4500 Hybrid Plush mattress with sectional view and features listed on a blue background

  • Colors

Mattress

  • Sizes

  • Twin XL
  • Full
  • Queen
  • Split Head Queen
  • King
  • Split Head King
  • Cal King

Size

  • Twin XL (8)
  • Full (8)
  • Queen (8)
  • King (8)
  • Cal King (8)
  • Split Head Queen (4)
  • Split Head King (4)

Product type

  • Mattress (7)

Shop by size

Twin

74.5" L x 38" W

Best for kids, day beds, bunk beds or limited sleeping space.

Shop Twin

Twin XL

79.5" L x 38" W

Best for taller kids, dorm rooms or those with a split king set up.

Shop Twin XL

Full

74.5" L x 53" W

Best for young adults, a first apartment or a guest bedroom.

Shop Full

Queen

79.5" L x 60" W

Best for couples or single sleepers who like space to roll around.

Shop Queen

King

79.5" L x 76" W

Best for couples who like their own space to spread out or share a bed with children/pets.

Shop King

Cal King

83.5" L x 72" W

Best for taller people, people who share the foot of their bed with pets, or have a narrow bedroom.

Shop Cal King

Size Guide

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Comfortable mattress with couple and cat

SHOPPING YOUR WAY

Try out a Serta in-store, hassle-free

Want to test out and feel our products before you buy? Our Sleep Ambassadors will offer you a personalized, no-pressure in-store experience. Visit a store near you today.

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SHOP WITH CONFIDENCE

Buy online from a company you trust

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100-day trial

If you’re not completely satisfied, you can exchange or return it for a refund.

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Free shipping and returns

All products ship free and feature free returns when you order directly from Serta.com.

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10-year limited warranty

You should be able to rely on the quality of your rest. That’s why every Serta® bed is backed by our hassle free warranty.

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Monthly financing with Affirm

Quick, simple financing options with Affirm. Apply at checkout.

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FAQs

What does “NXG” mean?
NXG stands for Next Generation. It represents the evolution of the iSeries line — upgraded with higher-density foams, improved cooling technology, and refined feels across every comfort level.
What firmness options are available?
You can choose from plush, medium, or firm models to match your preferred comfort and support level.
What’s the difference between the iSeries NXG Hybrid and All-Foam models?

Hybrid models combine memory foam with an advanced coil system for a slightly more responsive, supportive feel and better airflow.

All-Foam models offer a smoother, more body-hugging feel that absorbs more motion and contours closely to your shape.

Is iSeries NXG compatible with adjustable bases?
Yes, every iSeries NXG model works seamlessly with Baselogic® adjustable bases for customizable comfort and support.
Can I expedite my order?
We do not have an expedited delivery option at this time. Our site will provide the best delivery estimate at checkout.
Do you ship internationally?
Directly on our website, we only ship within the United States, to the lower 48 states. At this time we do not offer shipping to Alaska or Hawaii.
Do you offer financing?

Financing is available directly through our website. We have partnered with Affirm to offer financing or pay-over-time options for our customers. At checkout, you will be given the option to pay through Affirm. If approved, you will be given loan options for 3, 6, or 12 months. All interest is provided up front, there are no hidden fees, and only a soft credit check is done through Affirm's system for approval. After you've confirmed your choice, you will be redirected back to our website to complete checkout.

Affirm only requests a soft credit check for approval, so the credit inquiry won’t affect your credit score. Once you've selected your financing term, you will be redirected back to the website to complete your purchase.

For returns and cancellations, refunds will be processed through Affirm and posted to your Affirm account. Refunds will be processed within 3-10 business days. Keep in mind the interest charge will not be refunded.

Please note that financing through Affirm is not available in West Virginia and Iowa.

What is the difference between ordering online from Serta.com and another retailer?
When you place an order through Serta.com, you are backed by the 120-Day In-Home Trial. We know ordering a mattress online can be intimidating, so we want to take the risk out of it for you with the in-home trial that allows the perfect amount of time to test the mattress and accessories in your home and make sure it's right for you. If you decide it is not the right fit, we make returns easy and free.

Serta products are sold at many different retailers through the United States. Our goal is to be able to serve our sleepers where they feel the most confident purchasing their Serta products. Many retailers will have products on display for sleepers to test out before making your decision, and may offer different pricing or promotional advantages for buying directly through a retailer. Retailers may also have different models than what you see directly on the website.

Regardless of where you purchase, you can be confident you are getting a quality Serta product.
Do you make custom sizes?
We are unable to provide custom sizes at this time. For now, we carry industry standard sizes of twin, twin XL, full, queen, king, and California king.
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