IDLE Sleep Dual Firmness Mattress Review

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IDLE Sleep Dual Firmness Mattress Review

Review By

Nicole Bradford

We receive referral fees when readers use our links to buy a mattress

IDLE Sleep Dual Firmness Mattress Review Summary

The IDLE Sleep Dual Firmness is a luxury, two-sided mattress-in-a-box that is handmade in the USA from premium, CertiPUR-US foams

  • The flexibility to find the perfect level of comfort with two firmness levels in a single mattress (medium and medium-firm)
  • Great value for money and constructed in the USA from premium materials
  • Manufactured with CertiPUR-US foams that contain no formaldehyde, heavy metals, or chemical flame retardants
IDLE Sleep Dual Firmness Mattress Review Summary

IDLE Sleep Dual Firmness Mattress Review Summary

IDLE Sleep Dual Firmness Mattress Review Summary - mobile

The IDLE Sleep Dual Firmness is a luxury, two-sided mattress-in-a-box that is handmade in the USA from premium, CertiPUR-US foams

  • The flexibility to find the perfect level of comfort with two firmness levels in a single mattress (medium and medium-firm)
  • Great value for money and constructed in the USA from premium materials
  • Manufactured with CertiPUR-US foams that contain no formaldehyde, heavy metals, or chemical flame retardants

Full review below

The Complete IDLE Sleep Mattress Review

If you are in a hurry, skip to the review summary at the bottom of this page. But it's better to read the complete review to get a clear picture of this mattress.

The IDLE range of mattresses has two main selling points: the high-tech characteristics of IDLE’s Cooling Buoyancy Foam and the two-sided design of the mattresses.  Whichever IDLE mattress you choose, you are treated to double layers of the soft IDLE quilting foams either side of your chosen core, so you can flip the mattress on a regular basis to get more years of comfort from your investment.

What makes the IDLE Sleep Dual Firmness mattress special is it features an all-foam core sandwiched between two different firmness options – medium on one side and luxury-firm on the other.  If you’re unsure which firmness is right for you, this option really takes the stress out of making a purchase online.

IDLE Sleep Dual Firmness Mattress Review

Four Different Choices so You Can Select Your Favorite Core

IDLE offers sleepers a choice of four different mattress types so you can select the materials you prefer in your IDLE mattress core.

  • The IDLE 14” Hybrid combines layers of IDLE foam on both sides with a central Quantum edge-to-edge coil unit.
  • The IDLE 14” All Foam combines layers of IDLE foam on both sides with a high-density foam core.
  • The IDLE 12” Dual Firmness combines layers of IDLE foam of differing firmnesses with a high-density foam core to create a mattress with dual firmness: Medium on one side and Luxury Firm on the other.
  • The IDLE 14” Natural Latex Hybrid combines natural Talalay Latex on both sides with a central Quantum edge-to-edge coil unit.

The IDLE 12” Dual Firmness mattress features IDLE’s foam core.

Each of these mattresses is designed to offer equal comfort on both sides – thereby prolonging the life of the mattress.  Sleepers can flip the mattress over every four to six months to minimize wear and ensure maximum comfort.

However, IDLE is at pains to point out that this feature doesn’t mean you have to flip your mattress.  The option is there if you want it; but, if you prefer not to, that’s fine too.

Of the four options IDLE gives consumers, this review will focus on the IDLE’s 12” Dual Firmness mattress.

IDLE Sleep Dual Firmness Mattress Review

Enjoy the Best of Both Worlds with the IDLE 12” Dual Firmness Mattress

The IDLE 12” Dual Firmness mattress combines layers of IDLE foam on both sides with a central high-density foam core.

On the Medium side of the mattress you will find:

  • Top layer of Thermacool fabric for a soft breathable cover
  • 5” of IDLE Quilting Foam for softness and comfort
  • 2” of IDLE Cooling Buoyancy foam for a cooler night’s sleep
  • 2” IDLE Support foam, a transitional foam for improved bounce and airflow
  • 4” of high-density foam core

Whereas most IDLE mattress then feature the same three layers of IDLE foam on the bottom as you found on the top, all wrapped in the same soft Thermacool cover, the IDLE 12” Dual Firmness does something different.

This IDLE mattress is a really interesting proposition for sleepers who aren’t sure whether they prefer a medium firmness to their mattress or a firm feel because it delivers both sleep experiences.

On the other side of the 4” high-density foam core, you find a different collection of top-layer foams:

  • 2” IDLE Support foam, a transitional foam for improved bounce and airflow
  • 1” of IDLE Cooling Buoyancy foam for a cooler night’s sleep
  • 5” of IDLE Quilting Foam for softness and comfort
  • Top layer of Thermacool fabric for a soft breathable cover

This reduction in the IDLE Cooling Buoyancy foam layer from 2” on the Medium side to 1” on the other side is what gives the Luxury-Firm feel to the second side.

Choose which Side Suits You Best

We’ve explained how the different thicknesses of its foam layers mean the IDLE 12” Dual Firmness mattress features medium support on one side and luxury firm support on the other.

The beauty of this is it means sleepers can experience a different feel with a simple flip.

This has to be the most fantastic thing about the IDLE 12” Dual Firmness mattress – you can choose the side which suits you best.

This will be especially welcome if you suffer from occasional back or joint pain and therefore need a little extra softness or a little extra support from time to time – you can achieve this with your existing mattress simply by flipping it over.

But it’s also a great idea for anyone who can’t decide whether they sleep medium or medium firm.  With an IDLE Sleep Dual Firmness mattress, you don’t have to decide!

IDLE Sleep Dual Firmness Mattress Review

Sleep Easy from the First Night

All the foams used in an IDLE mattress are CentiPUR-USTM certified.  This means they avoid some of the chemical nasties with which cheaper, imported foams can be tainted.

IDLE Sleep Foams are all:

  • Made without ozone depleters
  • Made without PBDEs, TDCPP or TCEP (“Tris”) flame retardants
  • Made without mercury, lead, and other heavy metals
  • Made without formaldehyde
  • Made without phthalates regulated by the Consumer Product Safety Commission
  • Low Volatile Organic Compound (VOC) emissions for indoor air quality.

As a result, an IDLE mattress isn’t subject to the same nasty off-gassing that cheaper, imported foam mattresses can present.

It is worth noting here that once you have unboxed the mattress you can expect to notice a “new mattress” smell.  However, you can be sure it isn’t because of any of the nasty chemicals listed above.  Plus, that new mattress smell will soon dissipate.

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IDLE Sleep Dual Firmness Mattress Review Summary

Unique IDLE Foam Construction Sleeps Cooler

IDLE mattresses don’t use standard memory foam.  Instead, they feature a new type of foam construction that IDLE says sleeps much cooler than a traditional memory foam mattress.

The memory foam that is used today in many sleep products was developed in the 1970s and IDLE says it has been superseded by modern alternatives.  It is this new type of foam that IDLE uses in its mattresses.

The IDLE Buoyancy foam has billions of microscopic air bubbles that exist within the foam.  As well as the cloud-like feel, this gives the IDLE 12” Dual Firmness mattress an improved airflow.  The improved airflow around and through the foam layer helps sleepers to stay cool.  This is important, because memory foam does usually sleep warmer than traditional coil construction mattresses.

The improved airflow of the IDLE Buoyancy foam helps it to dissipate heat more quickly.  Plus, IDLE Cool Support Buoyancy Foam is made without the visco-elastic chemicals found in traditional memory foam – so an IDLE foam stays cooler longer.

The whole mattress is wrapped in a cover of IDLE’s Thermocool™ fabric.  This has been designed to work with the body’s natural thermal capabilities through the addition of smart fiber cross-sections – further helping sleepers to regulate their temperature and enjoy a cool night’s sleep.

Enjoy Greater Buoyancy

Another key difference between IDLE Cool Support Buoyancy foam and the memory foam that is traditionally used in mattresses is in the buoyancy of the foam.

IDLE Cool Support Buoyancy foam’s air bubbles means the IDLE foam has less push back against your body.  This means that, when you sleep on an IDLE foam mattress, you don’t get that “sinking feeling” that you can experience with other foam mattresses.

Demonstration videos on the IDLE website show the faster foam response. This responsiveness makes it much easier to adjust positions on an IDLE mattress.  The IDLE 12” Dual Firmness mattress is, therefore, an ideal choice for couples who would like the comfort and support that a foam mattress can deliver but prefer to have a little extra bounce in their mattress.

Avoid that Roll Together Feeling

IDLE says that its IDLE Buoyancy foam has up to eight times better pressure relief than memory foam, so it significantly reduces the impact on pressure points.  If you have a tendency to wake with soreness to the lower back or hip, IDLE’s pressure-relieving foam will help to alleviate these feelings.

The same characteristics of the foam also help to minimize motion transfer – so couples won’t experience that roll together that can happen with some mattresses.  Instead, sleep disruption is minimized – which is great for couples where one partner moves around a lot in the night, or if you have different sleep schedules.

IDLE Sleep Dual Firmness Mattress Review

All IDLE Mattresses Come with a 120-Day Sleep Trial

All IDLE mattresses come with a 120 Night Sleep Trial.  This gives purchasers plenty of time to decide whether their IDLE Sleep Dual Firmness Mattress is right for them.

IDLE does expect purchasers to give their body time to adjust to the new mattress and therefore, if you decide your IDLE Sleep Dual Firmness Mattress, you will have to wait 30 days before you can arrange a return.  This is a fairly standard requirement in the industry.

After 30 days, customers can contact IDLE either via a contact form on its website or via email to arrange for the mattress to be picked up.  Once the mattress has been collected, you will receive a full refund.

Alternatively, if you decide the mattress is too firm, after 30 days, you can request that IDLE ships a complimentary matching mattress topper to you.  This will help to soften the feel of the mattress, so it is worth taking IDLE up on this offer if you think the mattress is too firm for you.

This way, you may be able to avoid an unnecessary return.  Or, alternatively, if you prefer the Medium side to the Luxury-Firm side of your IDLE 12” Dual Firmness mattress, if is a good way to bring the two sides into alignment.

Made in the USA

IDLE manufactures its mattresses at one of three factory partner sites in the USA.  The mattresses are made to order so, after placing your order, you can expect to receive your IDLE Sleep Dual Firmness Mattress within 3 to 7 business days.

IDLE suggests you can expect to allow two to three days for production plus three to six days for shipping, but this will depend on how busy its factories are and where you’re located.

After ordering you can monitor the progress of your delivery; the IDLE Sleep Dual Firmness mattress will be shipped to you via UPS Ground and you’ll receive tracking details via an email as soon as the mattress is shipped.

As well as being made in the USA, the IDLE Sleep Dual Firmness mattress comes with CentiPUR-USA certification, so you know the mattress is manufactured to the highest quality with no chemical nasties lurking inside.

IDLE Sleep Dual Firmness Mattress Review

Good Communication from the IDLE team and a Lifetime Warranty

Online customer reviews praise the service they have received from IDLE.  At present, you can contact IDLE through its website via a website form, email or online chat.

It is also important to note that every IDLE Sleep Dual Firmness Mattress comes with a limited lifetime warranty.  If you do discover a manufacturing defect, IDLE will provide a repaired or replacement Mattress or Mattress Cover, as appropriate, at any point over your IDLE Sleep Dual Firmness mattress’s lifetime.

Choose an IDLE Sleep Base – or Use Your Own

On its website, IDLE offers its own range of bed bases to use with your new IDLE Sleep Dual Firmness mattress.

The range includes:

  • The IDLE Adjustable Bed Base
  • The IDLE Smart Bed Base
  • The IDLE Super Durable Platform Base

Alternatively, you can use the mattress with a non-IDLE base of similar construction.

There aren’t any requirements under the warranty to use a particular type of base but, whatever mattress you choose to sleep on, we would always recommend using a base of some kind in order to prolong the life of your mattress.

Great Value for Money for a Quality Product

The IDLE Sleep Dual Firmness mattress is a great value product.  As well as being competitively priced for a premium foam mattress, there are frequent promotions that run on the IDLE website.

The fact you can prolong the life of your mattress because of the two-sided construction ensures that you will get maximum value for money from your purchase.  What’s more, the fact the IDLE Sleep Dual Firmness mattress comes with a lifetime warranty underscores the longevity of the mattress.

In terms of price per great night’s sleep, the IDLE Sleep Dual Firmness is a fantastic value-for-money deal.

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IDLE Sleep Dual Firmness Mattress Review Summary

Customers Love IDLE’s Mattresses and its Customer Service

Customer ratings on the IDLE website rate give their mattresses a convincing average rating of 4.87 out of five, based on 171 customer reviews.

In general, customers praise the comfort and the good looks of the IDLE mattress.  Many reviewers value the ability to flip their IDLE mattress and the rejuvenating “new mattress” sensation this creates.

Comments include:

  • A significant number of customers are enthusiastic about the fact the IDLE mattress is two sided.
  • Several reviewers commented that two-sided mattresses are hard to find these days, so the ability to flip the IDLE mattress is really appreciated.
  • The mattress gives a good level of support. Several reviewers reported that as a heavier and/or taller customer they find buying a suitable mattress that offers enough comfort and support difficult, but they felt that they had found a great mattress with IDLE.
  • A good proportion of IDLE’s customers praised its exceptional customer service.
  • The advice available through online chat to help with purchasing decisions is also highly praised by IDLE customers.
  • The generous thickness of the IDLE mattress was also praised by some reviewers.
  • A high number of reviewers reported reduced motion transfer – this feature was especially appreciated where one partner moves around a lot at night.
  • Overall, reviewers agreed that the IDLE Sleep Dual Firmness is a quality mattress.

Overall, IDLE Sleep Dual Firmness mattress is especially valued by customers who have suffered with discomfort from pressure points in the past, with many reporting that they enjoy a better night’s sleep on an IDLE Sleep mattress.

IDLE Sleep Dual Firmness Mattress Review

Dual Firmness Lowers the Risk of Ordering Online

The fact the IDLE Sleep Dual Firmness mattress features a different level of firmness on each side of the mattress helps to take the feeling of uncertainty away from purchasing over the Internet for many online purchasers.

IDLE is the first to acknowledge that buying a mattress online is a rather odd concept for some people.

Choosing an IDLE Sleep Dual Firmness mattress gives you two different levels of firmness to try at home.  IDLE says customers value this, especially if they aren’t used to buying a mattress before trying it.

With the IDLE Sleep Dual Firmness mattress, you can experience two firmness levels in the comfort of your own home.  And you have the versatility to flip between them, as desired.

IDLE Sleep Dual Firmness Mattress Review

Simple Online Ordering Process

It is a simple process to order your IDLE Sleep Dual Firmness mattress online direct through IDLE’s own website.

Choose your desired mattress size from:

  • Twin
  • Twin XL
  • Full
  • Queen
  • King
  • California King
  • Split King

The Split King is an interesting proposition for couples who want a King size bed but don’t agree on the level of firmness they enjoy in a mattress.  Purchasing a Split King IDLE Sleep Dual Firmness mattress would allow you to enjoy different firmnesses and get maximum benefit from the two-sided nature of the IDLE sleep construction.

It’s also worth noting that IDLE also offers an option to spread the cost of your IDLE Sleep Dual Firmness mattress through an agreement with Klarna.  This gives you the option to set up a Klarna credit agreement at the point of checkout.  This then enables you to spread the cost of your new mattress over six or twelve months – making the IDLE Sleep Dual Firmness mattress very affordable indeed.

Unbox and Enjoy!

Like most foam mattresses, the IDLE Sleep Dual Firmness mattress is shipped compressed in a box for the convenience of shipping and moving into place once it arrives.

It is simple to set up.  Move the box to the room in which you intend to sleep on your IDLE Sleep Dual Firmness mattress.  Remove the roll-packed mattress from the box.

Place the roll-packed mattress on top of the bed base on which you intend to use it, then unwrap the mattress from its plastic wrap.  Once you have removed the plastic, the IDLE Sleep Dual Firmness mattress will unfurl and expand quickly – so it is ready to sleep on straight away.

As with most foam mattresses you may notice a little off-gassing immediately after unboxing.  However, this should be minimal with a IDLE Sleep Dual Firmness mattress because they are made to order and shipped within the USA.

What’s more, thanks to the IDLE Sleep Dual Firmness mattress’s Certi-PUR USA certification, you know there are no chemical nasties involved and the scent is nothing more than that typical “new mattress” smell.

IDLE Sleep Dual Firmness Mattress Review

We Recommend the IDLE Sleep Dual Firmness for Great Value Comfort

As we’ve noted, the IDLE Sleep Dual Firmness mattress gives a good balance of support and buoyancy.

This means it is favored by couples who want the comfort of a foam mattress with a little extra bounce, as well as being highly regarded by people who have previously suffered from sore pressure points when sleeping.

The best points about the IDLE Dual Firmness mattress include:

  • The two key points of recommendation are the cooler sleeping experience delivered by the IDLE Buoyancy foam when compared with traditional memory foam mattresses and its two-sided construction.
  • Being able to flip your IDLE Sleep Dual Firmness mattress helps to prolong the life of the mattress. It also helps you to enjoy that “new mattress” sensation for longer – simply by flipping the mattress.
  • The IDLE Sleep Dual Firmness mattress is a particularly good option for anyone who isn’t sure about the level of firmness they want from their mattress.
  • Having the option of both medium and luxury-firm in one mattress helps to reduce the risk of buying online. This is especially valued by people who are new to purchasing a mattress over the Internet.
  • The IDLE Sleep Dual Firmness is also of great benefit to those people who need varying levels of support from time to time; for example, those with a tendency to fluctuate in weight or to occasionally suffer from joint or back pain which makes a little extra support when sleeping desirable.
  • 120-night sleep trial
  • Lifetime warranty

On the whole, we recommend the IDLE Sleep Dual Firmness mattress as a great all-rounder that delivers a high-quality sleeping experience.

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IDLE Sleep Mattress Review Summary

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IDLE Sleep Dual Firmness Mattress Review

Mattress Comfort Rating

  • Two firmness options (medium and medium-firm) for comfort and support whether you sleep on your back, side, or stomach
  • Effective at reducing pressure on key joint areas, such as the hips, knees, and neck
  • Proprietary foams sleep cooler than memory foam to ensure you stay comfortable even when the temperature begins to rise

Trial Period and Value for Money

  • Handmade to order in the USA and shipped directly from a dedicated factory
  • Get competitively priced luxury with two mattress styles for the price of one
  • An industry-leading lifetime warranty and a 120-day risk-free trial period so you can test-drive the bed in the comfort of your home, risk-free

Where To Buy The IDLE Sleep Mattress?

The best place to buy the IDLE Sleep mattress is on the official website. Sleep Cupid has been able to secure special discounts for our readers. Click the button below to get a $300 IDLE Sleep mattress discount coupon.

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