Serta iSeries NXG All-Foam 3500 Medium
GoodBed Expert Review
Our Take on Serta iSeries NXG All-Foam 3500 Medium
Founder of GoodBed, Leading Mattress Expert
BEST if you
- Want a firm mattress
- Are mainly a back sleeper (though this mattress can also be good for side sleepers who prioritize firm support over extra pressure relief)
- Are seeking a mattress with excellent materials and construction
- Can sometimes be disturbed by other movements in the bed (motion isolation is very good)
- Prefer an above average amount of 'memory feel'
- Would like a mattress that performs very well when used with an adjustable base
- Enjoy sleeping just a bit more 'in' your mattress than 'on' it
NOT IDEAL if you
- Are a stomach sleeper, especially if you weigh more than 250 lb
- Like your mattress to have some bounce
- Have a strong tendency to sleep hot (temperature regulation is OK, but not the best)
- Regularly sit or sleep along the edge of your bed (edge support is good, but not the best)
- Tend to have difficulty changing positions during the night
- Want a natural or organic mattress
Serta iSeries NXG Mattresses Overview
GoodBed Editorial
Summary: Serta iSeries NXG Overview The new Serta iSeries NXG Collection replaces the outgoing iSeries models and upgrades these with new memory foams, multi-level cooling features, and all-foam and hybrid designs. All of these are built with a smooth, very high stretch cover that maximizes the feel of the underlying high-performance foams. They also add some very high density foams. We’d even call some of these Ultra High Density - our highest density category in memory foam.
See our full reviewYour Personal Match Score
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for Serta iSeries NXG All-Foam 3500 Medium
Materials & Construction
| Cover | Stretch knit ("CoolFeel Cover") |
|---|---|
| Comfort Layers |
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| Transition Layers | 1.5″ poly foam ("EverCool Fuze Gel Foam" |
| Support Layers | 7″ poly foam ("Serta Foam Core with Ultimate Edge Support") |
| Total Thickness | 13.5'' |
Compare These Products
Serta iSeries NXG All-Foam 3500 Medium vs. Other Beds
Compare the Serta iSeries NXG All-Foam 3500 Medium mattress side by side with other Serta models, or with mattresses from other brands.
Where to Buy
Serta iSeries NXG All-Foam 3500 Medium
Serta Online Seller
- Free delivery
- Return policy
- Financing available
Related Video Reviews
Frequently Asked Questions
Serta iSeries NXG All-Foam 3500 Medium
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In our evaluation of the Serta iSeries NXG All-Foam 3500 Medium mattress, we found it to be a Firm (3) on the GoodBed rating scale (1= firmest, 9 = softest).
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Yes, the Serta iSeries NXG All-Foam 3500 Medium mattress is adjustable base compatible. This means it is designed to be used on an adjustable base without incurring damage or voiding the warranty. In our review of this mattress, we tested it on an adjustable base to look for any adverse effects as the head and foot are elevated, and to see how well it conforms to the contours of the base both with and without the weight of a sleeper. Overall, we found the iSeries NXG All-Foam 3500 Medium to have very good adjustable base compatibility.
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Here are the in-home trial details for mattresses purchased from the Serta website:
- Policy: Comfort Guarantee -- Mattresses can be returned for refund (after 30 day minimum trial).
- Fees: A 15% return fee + $200 for return shipping is deducted from the amount credited for returns.
- Notes: The iComfort/iSeries In-Home Trial Period is 120 nights. For other products, Serta's Comfort Assurance program is 45 nights.
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Here are the delivery terms for mattresses purchased from the Serta website:
- Policy: Delivery available - Free with any mattress purchase
- Set-up: Set-up provided with delivery - Extra fee applies (+$150.00)
- Removal: Removal of old mattress provided with delivery - Extra fee applies
- Notes: Optional white glove delivery service includes set up, as well as the removal of packaging, your old mattress, and the box spring (if applicable).
Expert Q&A
See questions from other mattress buyersOther Models from Serta
Additional Information
General Description
Serta iSeries NXG™ - the next generation of comfort. Designed with 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. Featuring high-density NXG™ Memory Foam and a supportive foam core for deep, contouring pressure relief.
- CoolFeel™ Cover: a cool-to-the-touch CoolFeel™ cover provides immediate cooling, directly from the mattress surface, 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
- NXG Memory Foam: innovative, high-density, premium memory foam for deep, contouring pressure relief
- Foam Core with Ultimate Edge™ Support: premium, high-density foam core surrounded with Ultimate Edge™ Support for lasting, edge-to-edge mattress stability
About This Model
| Status | Active (released 2025) |
|---|---|
| Manufacturer | Serta |
| Line | Serta iSeries NXG |
| Collection | Serta iSeries NXG Foam Level 2 |
| Comfort Level | Firm |
| Support Type | Foam |
| Build Details |
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Corrections
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