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With its swappable foam layers, Sleeping Duck Mach II is marketed towards couples with different firmness preferences. Is the mattress just a gimmick or is it actually worth buying? I ran it through a series of hands-on, data-backed performance tests to find out.
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Sleeping Duck Mach II Review and Performance Test Results
Pros
- Great for couples with different sleeping styles
- Good for all sleeper types
- Supports your back and joints
- Edge support is good
Cons
- Significant motion transfer
- Expensive
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My experience with the Sleeping Duck Mach II mattress
My favorite aspect of the Sleeping Duck Mach II is the customization system.
If you aren’t happy with the firmness level, you can swap it out until you’re satisfied. That eliminates one of the biggest frustrations when shopping for a mattress online.
The other features of this mattress are really good as well…
Except for one glaring thing.
For a mattress that’s specifically marketed to couples, the motion-isolating capabilities of the Sleeping Duck Mach II leave much to be desired (and I hope the company will address this issue soon).
As for everything else, the Mach II performs well across the board.
Firmness
You can independently customize the firmness level on each side of the mattress.
If you prefer a firm mattress and your husband/wife/boyfriend/girlfriend prefers a soft one, you can make that happen.
That’s one of the major unique selling points of the Mach II.
There are very few mattresses on the market that let you have different firmness levels within one mattress (the Naturepedic EOS Classic is an example).
Also, since it’s a hybrid mattress with a coil support core, it’s really good for overweight people.
Cooling Test
We rate the Sleeping Duck Mach II a 7.5 out of 10 when it comes to cooling.
The Sleeping Duck Mach II slept cool.
I especially liked the cool-to-the-touch bamboo mattress cover.
If you tend to sleep extremely hot though, you may experience a tiny bit of heat retention from the mattress’ polyfoam layers.
It’s not the most cooling mattress I’ve ever tried, but it’s good enough. I have no problem recommending it to hot sleepers.
Motion Transfer Test
We rate the Sleeping Duck Mach II a 6.5 out of 10 when it comes to motion isolation.
This is where the Sleeping Duck Mach II disappoints.
Like I said, for a mattress that’s aimed toward couples, the Sleeping Duck Mach II’s motion isolating capabilities are aggressively mediocre, which I chalk up to the mattress’ bouncier and more responsive nature.
I experienced a good amount of motion transfer when I tried the mattress out with a partner.
Edge Support Test
We rate the Sleeping Duck Mach II an 8.5 out of 10 when it comes to edge support.
One thing that I noticed right away are that the mattress’ edge seams are really thick. This helps provide structure to the perimeter of the mattress and makes it so that it doesn’t sag as easily.
It’s also built with reinforced edge coils, which makes it even more supportive.
Overall, I was actually really impressed with the edge support on the Mach II. If you’ve read any of my other reviews, you know that I have high standards when it comes to edge support and am frustrated by most brands, who tend to treat this feature as an afterthought.
Just by sitting down on the Mach II, you can tell that Sleeping Duck put a lot of effort into the edge support.
Pressure Relief/Relief Test
We rate the Sleeping Duck Mach II an 8.5 out of 10 when it comes to comfort and pressure relief.
While not as compressing as memory foam, I still found the Sleeping Duck Mach II to be extremely pressure-relieving.
My joints felt well-supported when I tried it out.
The Sleeping Duck Mach II also has targeted and zoned support, which means you get extra support in the areas of your body where you need it the most (hips and shoulders).
Construction
There are only three layers to the Sleeping Duck Mach II.
These layers come encased in a removable cool-to-the-touch bamboo cover.
The top comfort layer is made up of polyfoam and provides you with a weightless feel and more responsive support.
The second comfort layer is made up of higher density polyfoam blocks that you can swap out to get your desired firmness level.
The coil unit of the Sleeping Duck Mach II is pretty substantial and is made up of individually-pocketed coils that provide zoned and targeted support.
I did experience some slight off-gassing when I first unboxed the mattress, but it dissipated within 48 hours.
Durability
From what I’ve tried in Sleeping Duck’s product lineup (their military grade steel Indestruct bed to be exact), I can safely say that the Mach II mattress is built to last.
Made from premium and high quality materials that are locally sourced in Australia, the Sleeping Duck Mach II should last you a long time (especially with proper mattress care and maintenance).
Sizes
The Sleeping Duck Mach II comes in three standard mattress sizes.
It measures 12.2 inches and is compatible with most bed bases, foundations, and bed frames (including adjustable beds).
- Queen
- King
- California King
Financing
Sleeping Duck offers financing for their Mach II mattress through AfterPay.
Shipping
Sleeping Duck offers free shipping to major cities within the continental United States.
Trial period
You get a 100 night risk-free trial period when you buy the Sleeping Duck Mach II mattress.
Return Policy
You get a 100-night sleep trial with the Sleeping Duck Mach II which means you get 100 nights to return the mattress in case you find that you do not like the product.
Initiate the return process by contacting the Sleeping Duck customer service team through either phone, email, or the live chat function on their official website.
Sleeping Duck will then arrange pickup and delivery.
You’ll receive a refund once the company receives the returned mattress.
Warranty
You get a 10-year warranty with the Sleeping Duck Mach II mattress.
The warranty covers body indentations and/or sagging greater than 30mm (1.8 inches). The Mach II mattress (just like any other mattress) has a break-in period wherein it conforms to the contours of your body as well as your weight. Indentations up to 30mm is normal and is not covered under the warranty.
Visible manufacturing defects as well as physical damages caused during manufacturing, assembly and shipping is also covered under the warranty.
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Evolution of the Sleeping Duck Mach II and Previous Versions
The Mach II replaced the original Sleeping Duck mattress in 2021.
It’s currently the only mattress that the company manufactures.
About Sleeping Duck
Headquartered in Australia, Sleeping Duck was founded by two Melbourne-based engineering students who decided to create a bed frame using construction-grade steel.
The Indestruct Bed used to be the only product that Sleeping Duck carried on their US website but they now also offer the Mach II mattress and an ‘anti-gravity’ pillow.
Sleeping Duck has won multiple awards and has been featured on Shark Tank.
You can buy Sleeping Duck products both in the United States and Australia.
Contact Sleeping Duck Customer Service
You can contact Sleeping Duck through the following channels:
- Phone – +1844-491-3825
- Email – service@sleepingduck.com
- Live chat
Similar Mattresses to Consider
If the Sleeping Duck Mach II doesn’t float your boat, I recommend these alternatives.
Naturepedic EOS Classic
If you need something that’s also customizable, check out the Naturepedic EOS Classic.
Like the Sleeping Duck Mach II, you can swap out the mattress’ internal layers to get the firmness level that you desire.
Cooling and hypoallergenic, the Naturepedic EOS Classic is made up of latex foam.
I recommend this alternative if you want an organic mattress.
>> View full Naturepedic EOS Classic mattress review for more details
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Birch Luxe Natural
If you need something slightly cheaper, check out the Birch Luxe Natural.
The Luxe Natural feels really similar to the Mach II, although it’s made out of latex instead of foam.
I recommend it if you like the Mach II but prefer latex instead.
If you’re on an extreme budget, you can also downgrade to the core model Birch Natural.
>> View full Birch Luxe Natural mattress review for more details
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Leesa Legend Chill Hybrid
If you need something with better cooling capabilities, check out the Leesa Legend Chill Hybrid.
I highly recommend this one to extremely hot sleepers. The Mach II does sleep cool, but if you sweat a TON you need something even cooler.
>> View full Leesa Legend Chill Hybrid mattress review for more details
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Additional Resources: Learn More About the Sleeping Duck Mach II
Where to buy the Sleeping Duck Mach II Mattress
You can purchase the Mach II on the official Sleeping Duck website in both the US and Australia.
Conclusion
The Sleeping Duck Mach II is a customizable mattress that allows you to tailor the firmness level to suit your (and your partner’s) needs.
The Sleeping Duck Mach II performs very well in terms of comfort and pressure relief while also providing very good responsive support.
But no mattress is perfect.
Even the best brands all have weak points, and for the Mach II that’s motion isolation. You will feel your partner tossing and turning.
If that doesn’t bother you, I think you’ll be very happy with this mattress. It’s well-made and feels expensive.
It should last you at least 10 years (and will be comfortable the whole time).
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How We Rate Mattresses
We personally test and rate mattresses using the following strict quantitative criteria:
- Comfort
- Structural integrity and durability
- Firmness and support
- Cooling capabilities
- Pressure relief
- Edge support
- Motion isolation
Learn more about our mattress rating process and methodology here.
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