Quick verdict: a historical, flippable mattress
Yawnder originally tested the Idle Sleep Dual Firmness mattress, an all-foam design with a softer side and a firmer side. This page is a record of that test. Idle Sleep is reported to be out of business, so do not assume its old direct-sale trial, returns or warranty can be honored; ask any seller for written support terms before buying an older or resold product.
In the original test, Ben described the softer side as medium firm, preferred it to the firmer side, and observed less motion on the softer side. Comfort and durability vary by sleeper and by mattress condition.
Compare current two-sided options by feel, support, weight, and return terms; see our other archived Idle Sleep review and mattress comparisons.
Historical test: The original account below describes the model, prices and manufacturer policies at the time of testing. These offers should not be treated as current.
At the time of this review, Idle Sleep was an online mattress brand that has multiple mattress models that have one thing in common, they can all be flipped. This means you can sleep on either side. This is a construction that harkens back many decades when you could maximize the lifespan on your mattress by wearing each side evenly. This was true then and is true now with Idle Sleep.
Their Dual Firmness mattress is a little different in that each side is a different firmness. This gives you the option of sleeping on a firm or soft side. At the time, the queen was listed at $1,199
Overview of the Idle Sleep Dual Firmness Mattress
The reviewed offer included a 120-night trial at the time. That means you can try out the mattress in your house for 120 days and if you don’t like it, you can return it for a full refund. There’s no need to ship it back either, Idle will work with you to take care of the return.
The brand then advertised U.S. manufacturing and a lifetime warranty; availability of support today is unverified.
Here’s a quick overview of the mattress. In the video, I show you how easy it is to flip as it comes with handles on each side that are stitched into the mattress.
Construction of the Idle Dual Firmness Mattress
Below are the construction details of the mattress as listed on the Idle Sleep website.
Queen size) 112lbs
Materials:
Super Soft Quilting foam,
IDLE buoyancy foam
Foam core
Comfort foams on BOTH sides
• MEDIUM-FIRM SIDE
Cover ALL-NATURAL Organic Cotton all the way around
1. .5” quilting foam on each side1.512 density
2. 2” IDLE buoyancy Foam 3.5lb
3. 2” transition poly layer 1.828 lb
4. 4” High Density Foam Core 1.835lb
• FIRM SIDE
1. .5” quilting foam on each side1.512 density
2. IDLE buoyancy Foam 3.5lb
3. .5” quilting foam on each side1.512 density
My Idle Sleep Findings
Below is a photo of my 14 lb. bowling ball on the soft side of the Idle Sleep Mattress. On a firmness scale I would say this is a medium firm feel.
The other side felt more firmly supportive to me.
In this test, I observed relatively little motion transfer. Below is a video illustrating motion transfer on the soft side. The soft side absorbs more motion than the firm side.
Original soft-side motion test
Here’s a video of the firm side of the mattress. There isn’t that much difference between the two but I noticed the soft side absorbed a little more motion.
Original firm-side motion test
My Idle Sleep Recommendation
Dual firmness mattresses are excellent guest bedroom mattresses because they give you two choices in one. But this mattress is also great for your bedroom every night. I prefer the softer side as I generally like a softer mattress but people on the lookout for a firm mattress will appreciate the firm side of the Idles Sleep.
At the time, I considered the two-sided design useful for a guest bedroom or a mattress for an Airbnb!
Frequently asked questions
Was the reviewed Idle Sleep mattress flippable?
Yes. This specific Dual Firmness sample had two sleeping surfaces; the original test describes a softer side and a firmer side. Other models can differ.
Can I rely on the original trial or warranty?
The original offer is historical. Idle Sleep is reported to be out of business, so verify in writing whether any seller or third party will provide support before buying.
Which side did Ben prefer?
In the original review, Ben preferred the softer side and described it as medium firm. The firmer side felt distinctly firmer to him.
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