iComfort Blue 100 Mattress Review

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iComfort Blue 100 Mattress

During your mattress shopping quest, you’ve probably come across quite a few names you’ve never heard of. Competition keeps innovation alive, so this is a good thing. However, it’s inevitable that those who’ve been in any industry longer do have the benefit of experience.

If you’ve seen a counting sheep commercial, you’re familiar with Serta. They introduced their very first Perfect Sleeper mattress to the market back in 1931. Today, our focus is on their iComfort Sleep System. The launch of this series is noted as one of the most successful in the industry, and today we’re looking at the iComfort Blue 100.

The thinnest of the six options at 9.75 inches, it features a four-layer construction that offers a gentle firm feel.

If you sleep on your stomach, I think you’ll like how it keeps you from sinking into your mattress. It also performs remarkably well when it comes to motion isolation.

My main concern is that I saw quite a few comments online about this product sleeping hot, so let’s delve in and see how it performed for me over the past several weeks and determine if could be the right mattress for you.

Video Review

Don’t want to read the full review? Watch our video review instead.

Serta iComfort Blue 100 Mattress Video Review

iComfort Blue 100 Specs Sheet

 Offgassing – Minimal- partially due to the fact it’s not compressed in a box

 Firmness Level (Scale of 1-10) – 7.0

 Trial Period – 120 nights

 Warranty – 10 years limited

Serta: Some Fun Facts

Serta has long been a leader in the mattress industry. Many of the things we’ve come to rely on during mattress shopping directly resulted from Serta’s decision to go against the grain.

For example, it used to be assumed that a firmer mattress is always better. However, that’s not always the case for people who don’t carry much weight or suffer from pressure points. In the 1970s Serta produced the “Pillow Soft®” mattress that catered to these needs. They also:

  • Produced the continuous coil innerspring design in the 1980s
  • Achieved #1 rating of mattress manufacturers in the United States in 2012
  • Were named America’s Most Recommended Mattress, Pillow, and Box Spring brand by the Women’s Choice Award consecutively between 2014 and 2016
  • Led the way in making all of their mattresses meet or exceed federal flammability standards

It’s pretty clear that, aside from having decades of experience, Serta has continually been making strides to lead the way in the industry. This gives them credibility and assurance that they know their way around a mattress.

You may be interested in: Serta iComfort Mattress Review Round Up

The iComfort Blue 100 Layers

We always like to get started giving you an inside look at the mattress so you know just what you’re working with, so let’s break it down!

The Knitted Cover

I like the look of the knitted cover. It’s very soft, but I saw no mention of it containing any specific properties for good heat transfer. We’ll get into more detail on that in a moment when we discuss breathability. It’s recommended you spot clean the cover even though it is removable.

The Comfort Layers

Right beneath the cover is ¾” of TempActiv™ Gel Memory Foam. It works to offer you a degree of contour and hug. This can be difficult to pair with a firmer mattress, so I think that’s why Serta chose to go with such a thick layer to kick off the comfort zone.

It’s followed by two inches of EverCool® Fuze™ Memory Foam. This foam begins to transition into a firmer feel while still allowing for a reasonable degree of contour as we move into the support zone.

The Support Layers

The support zone starts off with an inch of Balanced Support Foam. It provides the buffer for the remaining 62% of the mattress composition with the six-inch Serta Ultimate Edge® Foam Core.

This mattress is composed entirely of foam, and this is typically an indicator of good expectations when it comes to motion isolation. Sleep partners will definitely want to stick around to see how our motion transfer testing goes.

How’s It Feel?

This layer construction results in a feel like you’re floating atop the mattress. This is very common in firmer products and is typically preferable for stomach sleepers so they don’t feel like their faces sink into the mattress.

If you’re looking for an all-foam mattress that offers good support, keep in mind the total thickness of the iComfort Blue 100 is only 9 ¾”. People weighing more than 300 pounds may find they bottom out, especially on the corners. On the other hand, if you’re underweight, you may find the firmness to be a little bit high for your liking.

I do like the combination of lumbar support I get lying on my back and bounce that makes it easy to transition in and out of bed. If you change positions often or have trouble getting in and out of bed, this is a big plus. Keep reading to see how the layer lineup compares to standard medium products.

You may be interested in: Top Five Serta Mattress Reviews

Firmness and Sinkage Expectations

Keep in mind firmness will be perceived differently by different people:

  • Those with a higher BMI often find side sleeping to be uncomfortable due to excessive pressure points in firmer products.
  • The firm is often a good fit for stomach and/or back sleepers.
  • People who don’t carry much weight may also find it difficult to achieve much engagement with the foams that make up the comfort zone.

This makes the iComfort Blue Gentle Firm a great fit for people of average weight looking for a product slightly firmer than a medium.

If firm’s not really your thing or your body type isn’t well suited but you have a sleep partner who really needs the benefits of a firmer sleep surface, a great solution is to purchase a mattress topper that’s smaller than your mattress. It can be placed on the side of the person who likes a plusher sleep surface.

Since Serta has been around for so long, they’ve had time to create products for a large variety of specific sleep needs. To give you an idea of the firmness you can expect with the Blue 100 option, I stood in the middle of the mattress and noted the sinkage that results.

Using this test, 6 ½”  is pretty standard for a medium firmness. You can see this product sinks in about six inches. This is about 10% firmer than a standard medium, making the Blue 100 a well-suited option for stomach sleepers and those who carry a lot of weight.

Edge Support

Let’s take a minute to examine edge support. You probably sit on the edge of your bed more than you realize, and proper edge support keeps you from sagging too low and makes transitioning in and out of bed easier. If you have a sleep partner, proper edge support also works to extend your sleep surface to give you a more viable sleeping space.

You can see here that where this product lacks in heat transfer it makes up for in edge support. Many foam products will sink excessively on the edge, but the firm foams and Ultimate Edge® Foam Core work very well together to keep me supported on different areas of the edge. This can be a big plus for sleep partners and people who have trouble moving.

iComfort Blue 100 Motion Transfer Reduction

When it comes to motion transfer, we usually have pretty good luck with products made entirely of foam. Those including memory foam often do even better, so let’s take a look at how the iComfort Blue 100 works out.

I had no issues with my sleep partner bothering me moving around or getting in and out of bed. If you check out our review video above, you can also observe as I drop a 20-pound medicine ball next to another of equal weight. The ball in motion minimally impacts the resting ball.

I think the inclusion of two types of memory foam in the top two layers go a long way in this result. Sleep partners should expect a high degree of satisfaction when it comes to motion isolation.

You may be interested in: iComfort Vs Tempur-Pedic: Here’s The Scoop

Breathability and Temperature Regulation

Even if hot sleeping isn’t something you generally struggle with, it’s important not to overlook a mattress’s breathability. When your body temperature isn’t able to drop slightly, it makes it more difficult to enter the deep REM stage of sleep.

There are a couple reasons I was a bit worried about the iComfort Blue 100’s breathability:

  • When working with a product with a thin cover immediately followed by memory foam, it’s especially important to proceed with caution since memory foam is known to sleep hot.
  • Since this product is all foam, you miss out on the natural breathability innerspring units offer.
  • Quite a few customers have written online reviews indicating they struggled with hot sleeping.

That doesn’t mean it won’t sleep cool. Most of the newer products on the market incorporate unique cooling components to stand out from the crowd. For Serta’s iComfort Blue 100, this comes in the form of the EverCool® Fuze™ Memory Foam found in layer two.

To see how it measures up against all the other mattresses I’ve tested out, I lied on it for a half hour to see how long it would take to cool back off to a room temperature of 64 degrees Fahrenheit. This process took about 12 ½ minutes. The average is 10 minutes, so it took this mattress 25 percent longer than average.

I noticed more than a couple complaints from other people who’ve used this product with one person even returning it due to hot sleeping. However, this wasn’t the standard experience, and I personally didn’t struggle with hot sleeping.

If you’re someone who has significant issues with hot sleeping, I would suggest something with an innerspring unit like Serta’s Perfect Sleeper Hotel Concierge Suite II. It cooled off 20% quicker than average.

Durability Expectations

I was a little disappointed that there’s nothing noted about the densities of the foams of this mattress since this gives you insight into the durability expectations. During my research, I came across more than a couple of complaints of the development of indentations over time.

However, the iComfort series does come with a 120-night sleep trial to make sure you’re happy with the way it feels. You also get a 10-year warranty to cover manufacturer-related issues. Just remember that it’s imperative you keep your mattress in good condition to take advantage of the warranty. I saw an example online of a customer who was denied their warranty claim on account of a coffee stain.

I’d strongly suggest the supplemental purchase of a mattress protector to keep this from becoming a problem for you.

Maintenance, Protection, Care, & Warranty

I really liked the in-home delivery. You don’t have to deal with unboxing or trash, nor do you have to lift a heavy mattress. The four-layer design did a great job at balancing comfort and support across the length of my body, and the gel memory foam does a great job in providing pressure relief.

If you think the iComfort Blue 100 could be the right sleep solution in your situation, let’s take a look at some details that are easy to overlook until it’s too late!

Reviews and Feedback

This product did exceptionally well in terms of motion transfer reduction. Combined with its excellent edge support, I think this could be a great consideration for sleep partners.

The information I’ve shared is based on my honest opinion, but my viewpoint doesn’t encompass the full spectrum of preferences. Check out the Pros and Cons to see some comments made by customers that will give you a broad idea of what to expect if you decide to buy.

Who We Recommend the iComfort Blue 100 For

The iComfort Blue 100 offers numerous attractive features geared toward specific sleep needs. Because of its excellent contour, great overall support, and superior motion isolation properties, I think this could prove to be a great pick for:

  • Those suffering from lower back pain
  • People suffering from pressure points
  • Sleep partners
  • Those who don’t want a mattress that’s too firm but aren’t happy with plush or medium
  • People whose doctor has recommended they try a firm mattress

You may be interested in: Loom And Leaf Vs iComfort – Which Offers The Best Sleep

Final Verdict

I was a little disappointed in the lack of breathability considering the hype surrounding its heat transfer capability and the use of millions of active beads within the gel memory foam. Although I personally didn’t have significant issues with hot sleeping, this isn’t something I suffer with. If you do, you may want to go with something else.

Aside from this, I was very happy with this product. You do get to try it out for four months before you’re committed, so if other features like the low motion transfer and support sound good to you, you’re safe to try it out. This product is made in the USA, and Serta has had nearly a century in the industry to work out many of the common kinks in the mattress industry.

iComfort Blue 100 Specs Sheet

Material Thickness ILD Density
TempActiv™ Gel Memory Foam ¾ inch n/a n/a
EverCool® Fuze™ Memory Foam 2 inches n/a n/a
Balanced Support Foam 1 inch n/a n/a
Serta Ultimate Edge® Foam Core. 6 inches n/a n/a

Frequently Asked Questions

Is a Foundation Needed?

Mattress can be used with: -Foundation and box spring -Bunkie board -Flat platform -Slatted base -If you are placing the mattress directly on the slatted base, slats can be no more than 2″ apart.

Is a Mattress Pad or Protector Needed?

A quality mattress protector helps preserve your warranty and keep your mattress looking its best. You don’t have to use one, but it’s highly suggested.

Does it Work on Adjustable Beds?


Are Returns Hassle-Free?

100% full refund during sleep trial.

What’s the Warranty?

10 years limited.

Is There A Trial Available?

Yes. 120 nights.

Does It Need To Be Rotated?