Idle Mattress Review

Idle Mattress Review

Last Updated: July, 2020

Please Note: This Post Contains Affiliate Links

Idle Plush Foam Mattress Review

There isn't a shortage of all-foam and a bed-in-a-box mattresses you can buy online these days. Since starting The Sleep Shop, we've had the chance to test a variety of different mattresses. Some are great, others, not so much.

Here's our take on the new Idle 14 Inch Foam Mattress and what type of sleepers this bed is best for.

Idle Mattress Review

Quick Summary:

The Idle Gel Foam mattress is a medium-soft cooling gel mattress that uses premium materials to revolutionize what you should expect from an all-foam bed. It's not the cheapest option, but it's backed by an 18-month trial, lifetime warranty, and free returns. 


  • Super-Cooling, better than any other foam mattress we've tested
  • Great motion isolation
  • Responsive foam doesn't make you feel trapped
  • Quick setup
  • 18 month trial period (industry-leading)
  • Lifetime warranty
  • Free shipping and returns


  • Edge support isn't great
  • Can't be flipped like other Idle models
  • May be too soft for heavy sleepers

Idle Is currently running an awesome deal! Get 20% off + 2 free pillows if you buy today!

Sleeping Position Overview

The Idle 14in Foam mattress is a medium-soft mattress which would be considered comfortable by most people. However, if you sleep on your stomach consistently, you may want a firmer mattress, like the Idle Hybrid instead.

  • Back Sleepers: If you sleep on your back, you're most likely to like a medium to medium-firm mattress. The Idle Foam mattress is considered a medium mattress when it comes to firmness and should be comfortable for most back sleepers. It was great at keeping your entire body fully supported without any sinking feelings. 
  • Stomach Sleepers: If you sleep on your stomach, the Idle Plush Foam mattress may be too soft. The foam does sink when you lie on it, which may strain your back and neck if you sleep on your stomach. The Idle Hybrid or Latex mattresses would be better suited for this sleep style.
  • Side Sleepers: If you sleep on your side, you'll love this mattress. Its soft yet supportive, which is traditionally what side sleepers find to be the most comfortable. There's enough give in the foam to be able to conform to and support all areas of your body while you sleep.

Overall Build Quality/Quality of Materials

Edge Support

Idle isn't a cheap brand, but with mattresses, you get what you pay for. We were very impressed with the overall build quality of this all-foam mattress. 

It has 6 structural layers, as well as a washable cover, a fire-resistant base cover to protect the mattress no matter what happens. 

Nothing about this mattress felt cheap. Everything from the weight, to the foam itself, to the cover and the pillows that came with it, everything was a quality level that justified the price. It's a high-quality foam mattress that should last for years. 

Idle is currently running an awesome deal! Get 20% off + 2 free pillows if you buy today!


There are a ton of all-foam mattresses on the market, and what makes each one unique are their layers. The Idle Plush foam mattress puts cooling support at the forefront of their design. Here's some info on the layers of this mattress.

  • "Ice Fabric" Cover: This cover is truly remarkable. It's noticeably cooler than a traditional mattress cover, and the cooling effect lasts throughout the night. 
  • 1" Cooling Buoyancy Foam: Another cooling layer, this buoyancy foam is designed to feel like traditional foam, but without that "stuck" sensation. It's more responsive, which means it takes the shape of what's put on it, but once you get up/remove the object on the bed, it bounces back quicker than traditional memory foam. 
  • Fire Resistant Barrier: This layer is a 100% natural cotton barrier than shields the bed from potential fire damage in the worst-case scenario.
  • 3" Gel Infused Buoyancy Foam: This support layer is what provides the quick reaction time and support of this mattress. 
  • 3" Idle Memory Foam: The next foam layer of this mattress provides additional support and thermal neutrality which means it's more responsive and retains less heat than traditional foam. 
  • 8" High-Density Foam Base: This super-thick base provides extra stability and is one of the main reasons why the Idle foam mattresses are thicker than the industry standard. It's also around 30% more durable than other types of foam due to its super high density.
  • Fireproof Cloth: This layer is another fire-resistant one that helps in case of emergencies. It has no petroleum-based synthetic nylon or polyester either. 
  • Washable Base Cover: The final layer of this mattress is a washable cover that unzips so you can easily clean it.

All of these layers come together to create a 14in foam mattress, which is thicker than most others within the same price range on the market.

Idle Foam Mattress Height

Overall Comfort & Pressure Relief

Comfort is the #1 thing you should consider when shopping for a mattress. After all, if a mattress isn't comfortable, it doesn't matter how many layers or cool features it has, you won't like it. 

We're happy to tell you that the overall comfort level of The Idle Plush Foam Mattress was great. 

I'm a lightweight combination sleeper, and I was able to get comfortable in multiple positions. This mattress had enough support for my spine and neck while lying on my back. It provided good pressure relief for the hips and shoulders when lying on my side; yet it was still firm enough not to cause a kink in my neck while sleeping on my stomach.

Overall, the comfort and pressure relief level was great. The only area that Idle Sleep could improve on would be edge support. Edge support with all-foam mattresses is always tough to get right, but it was the only real comfort flaw of this bed.

Idle is currently running an awesome deal! Get 20% off + 2 free pillows if you buy today!


According to Idle, this mattress comes in at around a 4.5-5.5 on the firmness scale. This makes it a true medium, but for heavier sleepers, it may feel softer.

For me, someone weighing well under 250lbs, it felt like a true medium. However, without additional support coils like you'll find in their hybrid, if you're heavier, it will definitely feel softer. 


Motion Isolation & Motion Transfer

All-foam mattresses are known for having great motion isolation, with a minimal amount of motion transfer, and this mattress was no different. As you can see, you can make a fair amount of ruckus on the bed without knocking over a glass of water. Nice!

Motion isolation

Cooling Properties

It felt like the entire build of this mattress was centered around keeping you cool at night. The cover itself provides a cooling effect to the touch while the buoyancy foam layers help dissipate heat throughout the night while you sleep. 

Overall, if you're a hot sleeper, this mattress makes a huge difference in how cool you stay at night.

Buying Experience

Buying a mattress online can be scary. It doesn't matter how many reviews you read; you never truly know how you're going to like a mattress until you sleep on it. 

The industry standard for an in-home trial is about three months, with some companies offering free returns, and others requiring a restocking fee. 

The industry standard for a mattress warranty is about ten years. 

Idle blows these numbers out of the water. They offer an 18 month trial time period and a lifetime warranty with free returns. As far as risk-free online mattress shopping goes, this company is a leader. One other thing to note - you also get free shipping and returns if you end up not liking the bed.


Overall, we don't have much bad to say about the Idle Plush Foam Mattress. It took what people love about memory foam and what people hate about memory foam and used that data to create an innovative, industry-leading foam mattress that's suitable for just about everyone. 

Idle is currently running an awesome deal! Get 20% off + 2 free pillows if you buy today!

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