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Serta iComfort Mattresses Overview

Last updated on August 12, 2019

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There are 5 models in Serta's popular iComfort line of memory foam mattresses. How are they similar and what are the differences?

Note: This is not a review. This is our plain-English explanation and overview of the current Serta iComfort mattresses. Also see our overview of the Serta iComfort Hybrid series. We also have an in-depth review of the entry-level iComfort mattress, the Blue 100CT Gentle Firm.

If you’d prefer to watch rather than read, watch our Serta iComfort Mattresses Overview video

Serta iComfort Mattresses

The iComfort line from Serta includes 5 total model names, separated into the Blue and Blue Max series, both of which are all-foam mattresses, with a combination of memory foam, gel foam and support foam. The Blue Max mattresses have more cooling features than the Blue models, though both have a cooling cover.

There's also an iComfort Hybrid series, which we cover here; those beds feature foam over a pocketed coil support unit.

We also noted that the terms Serta uses to describe the comfort/feel didn't quite correspond with how we would classify these mattresses. See below.

Serta iComfort Mattress Height GoodBed Feel Estimated Price (Queen)
Blue 100CT Gentle Firm 9.75" Medium $1,199
Blue 300CT Plush 11" Medium Soft $1,499
Blue 300CT Firm 11" Firm $1,499
Blue Max 1000 Cushion Firm 12.5" Medium Firm $1,799
Blue Max 1000 Plush 13" Medium Firm $1,799
Blue Max 3000 Elite Plush 13.5 Medium Soft $2,299
Blue Max 5000 Elite Luxury Firm 13.25" Medium Firm $2,499

Cooling Covers

Both the Blue and the Blue Max iComfort mattresses include cooling covers with phase change material, and the covers feel noticeably cool to the touch.

The cover of the Blue models feature a zig-zag design, while the Blue Max mattresses feature stripes.

Both covers have a soft, stretchy jersey feel, and they perform well in tandem with the memory foam; with memory foam this slow responding, a stretchy cover can move and conform as the foam does.

Serta iComfort Blue

The Blue series includes the Blue 100CT and the Blue 300CT. We have an in-depth review of the Blue 100CT Gentle Firm, which we found to be a supportive choice particularly for back sleepers. The Blue 100CT and the step-up model, the Blue 300CT (which comes in Plush and Firm versions) are similarly constructed. The 100 has about 1.75" of very slow responding memory foam atop firmer support foams. The 300 version has about 3" of the same memory foam.

All of the Blue mattresses give you that squishy, slow, melting-into-the bed feel that memory foam is known for, with varying degrees of softness/cushioning. The Blue 100CT Gentle Firm we would call a Medium feel -- right in between the sensation of sinking deeply into the bed and floating above it. 

The Blue 300CT Firm has 1.5" more slow responding memory foam, but has a firmer comfort/feel, while the 300CT Plush we would call a Medium Soft. Of the three Serta iComfort Blue mattresses, the 300CT has the deepest cushioning -- you really sink in deeply on this bed.

The memory foam in these beds is Serta's TempActiv gel memory foam, which includes phase-change material to help the foam feel cool to the touch. We did think they felt cool to the touch, but keep in mind that the mattress will be under a mattress protector and sheets, which will dampen the cooling effect somewhat.

If you are concerned about overheating or sleeping hot, the Blue Max series has more cooling features.

Serta iComfort Blue Max

Stepping up to the Blue Max series, construction is similar, but you get more cooling features. There are three model numbers in the series, corresponding to different firmness levels, cushioning and mattress height.

All Blue Max models include TempActiv Max foam with phase change material, and we found the Blue Max mattresses to be palpably cooler than the iComfort Blue models. Furthermore, we could feel the cooling effect even through clothing and jeans, so we think it will make a meaningful difference through sheets and bedding.

The iComfort Blue Max 1000 Cushion Firm is what we would call a medium softess level. The related Blue Max 1000 Plush felt similar to us from a support and feel perspective, but it does have deeper cushioning (you sink in more) and has 1/2" more memory foam.

The iComfort Blue Max 3000 Elite Plush is the softest of the iComfort mattresses. It's thick with a lot of memory feel and conformance--you really sink in deeply to this bed and it has just about the deepest cushioning we see on mattresses. The 3000 Elite Plush has an added cooling feature -- a layer of what appears to be an airy plastic mesh -- it reminded us of the texture of steel wool. The mesh is highly breathable, and is meant to help flush warm air away from the body and invite cooler air to circulate. It also gives the mattress a little bit of bounce.

The top mattress in the range, the iComfort Blue Max 5000 Elite Luxury Firm isn't as soft and squishy; we'd call it more of a medium firm, and the feel is the main noticeable difference over the 3000 Plush.

Other Factors

Delivery and Returns

  • Free delivery with white glove service from

Delivery and setup will vary depending on where you purchase your iComfort mattress, so check before buying.


  • Varies by model
  • Return fee

Warranty information for each mattress is included on the mattress "Law Label" at the store, and vary depending on the model. Be sure to talk to your salesperson about warranty terms, and particularly about the body impression warranty, which will tell you how much of a permanent depression may form to be covered under warranty, since it varies by model from 3/4" to 1.5".

To obtain warranty service, you will be responsible for shipping the mattress back to the company or retailer.

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