Sleeping Duck Mattress Review

So much customisation, so much choice.
Last Updated Apr 2024
The Sleeping Duck stands out as having an incredible system that allows you to customise the firmness of any part of the bed, which is unmatched by any competitor. Read on to learn more!

Sleeping Duck SD MACH II

Our Verdict
If you and your sleeping partner have wildly different preferences, this might be your answer.
What we like
  • The interchangeable firmness system lets you adjust the firmness level
  • You can choose different firmness for half and half, or even different zones along your body
  • Did I mention the interchangeable firmness system?
Considerations
  • It's expensive. A single mattress comes at $999.
  • It is very heavy. I have video footage of my brother falling on his bum while trying to get it up the stairs which will definitely be shown at his wedding.

Who is Sleeping Duck and where are their mattresses made?

Started by two Melburnian engineers in 2014, Sleeping Duck mattresses are Australian owned. Sleeping Duck created the SD Mach II and launched it towards the end of 2020, replacing their original Sleeping Duck mattress. This article will be about the SD Mach II, not the first Sleeping Duck mattress.

Their foams are made in Sydney Australia, but the springs and upholstery layers are made in China, where the mattress itself is also assembled.

Have you considered this similar mattress?

Origin Hybrid Pro Mattress

Click for Best Price
Time To Sleep Editor's Choice
"This is a high quality mattress - durable, cool, plush yet supportive, and suits all sorts of sleepers."

What is the Sleeping Duck mattress made out of? Are there detailed specifications for this mattress?

BreatheTech Cover

Sleeping Duck’s BreatheTech cover is a elastane yarn bamboo cover that has an inbuilt zipper to allow you to open it up to change your firmness scale. It’s an efficient and easy system to allow individual customisation for either or both sides of the bed. While you’re at it, you can pop the cover in the washing machine to keep your bed hygienic.

However, Sleeping Duck claims that their washable cover has maximum breathability for air and moisture. Is it really that breathable? What is bamboo elastane exactly?

Elastane is derived from polyurethane, the same material that polyfoam is made from. The elastane in the cover provides stretch and comfort. If you’re trying to avoid plastics, this is something to consider. Sleeping Duck’s bamboo elastane fabric is currently pending certification from the textile industry certifiers, which tends to take quite a long time to achieve. Given that this blend was not used in the original Sleeping Duck mattresses in 2014, it’s reasonable to expect that this new blend will need a bit more time before certification is awarded to it, and that this lag time is an unavoidable side product of Sleeping Duck’s continued innovation. If the mattress does achieve this certification, you can be reassured regarding the level of harmful chemicals in the fabric. That said, it cannot be substantiated that the cover has breathability properties from the bamboo plant itself.

All in all, it is a very fancy looking cover, very comfortable, functional and easy to use. If you’re looking for something organic or environmentalism is a high priority on your list, the SD Mach II might not be the bed for you between the cover and foam layers. If that’s not a dealbreaker for you though, this cover should tick most if not all the boxes.

AntiGravity Surface Foam

Both the AntiGravity foam and the ComponentAdapt foam in the SD Mach II are produced right here in Sydney. Sleeping Duck claims that it’s more breathable as their high-quality foam is are expanded with pressure rather than chemicals, and that unnecessary chemicals are therefore avoided. But what does this mean?

Well, one can start with the question of what a foam is. You get a foam when you get lots of gaseous bubbles in either a liquid or a solid. Think about a foamy bubble bath. All those air bubbles are what makes the bath foam up. You can scoop up a huge chunk of the foam, and it’s light and airy. Or if you put a marshmallow in a vacuum chamber, it’ll expand to replace the absence of air (at least until the very air inside the marshmallow also gets sucked out). In the context of memory foam or polyfoam, mattress manufacturers need to put air pockets into the polyurethane, which is made from petrochemicals. Otherwise you’d be sleeping on a solid block of plastic. Not good.

Sleeping Duck claims that instead of using chemical reactions to create air pockets in the polyurethane as many manufacturers do, they use Variable Pressure Foaming to expand the foam, thereby creating the air pockets. GECA has approved the SD Mach II which shows that there are no Volatile Organic Compounds (VOCs for short). The foams being made in Sydney rather than in China definitely helps with our peace of mind, as there is much more transparency within Australia.

The goal of the AntiGravity surface foam comfort layer is to give the cushioning and pressure point relief effects of memory foam along with the responsiveness that memory foam doesn’t have, and have it be durable so that it doesn’t sag. This means that while the foam will conform to your shape like memory foam does and give you pressure point relief, you won’t end up stuck in that impression and can move around easily.

ComponentAdapt Customisation System

Sleeping Duck have designed the ComponentAdapt Customisation layer to be interchangeable so you can vary the firmness scale of your bed. For example, you can order firmer options of Sleeping Duck’s airgrown foam to change specifically the shoulders or hips areas, or have a much softer bed on the firmness scale from your partner’s personal preferences.

Sleeping Duck’s foam being “airgrown”, uses pressure to create the air pockets, as explained above. This gives them control over the structure of the foam and the pockets inside so they can determine how firm, resilient, breathable, and responsive the foam will be. The ComponentAdapt layer uses this to give sleepers varying levels of firmness and responsiveness as requested.

After receiving the bed, sleepers should allow 21 days to get used to sleeping on the bed before requesting for any adjustments. Then Sleeping Duck will for up to 100 days provide additional foam panels for free. After that there is an extra cost for these – but that’s definitely cheaper than buying an entire mattress.

The flexibility for different firmness levels is definitely one of Sleeping Duck’s incredible advantages. This layer gives you more than 256 combinations, so sleepers can have many firmness levels in the one mattress.

Multi-zoned Spring System – the “Motherboard”

Sleeping Duck uses twice tempered steel in their pocket springs so there’s no question about their durability. The SD Mach II has three gauges of spring throughout the mattress – 1.8mm springs for shoulder and knee zones, 2.0mm under your back and hip, and 2.3mm around the perimeter for edge support. The zoning is a smart way to help with spinal alignment and pressure relief, especially for side sleepers.

Pocket springs help with motion isolation to minimise partner disturbance or motion transfer, and the 2.3mm edge support means you can sleep on the whole surface of the bed, right up to the edges.

It must be pointed out that very few mattress manufacturers disclose the gauges of their springs even when directly asked, and that the usual response we get is “this is proprietary information”. For Sleeping Duck to be so open about the coil gauges in their beds is so refreshing and downright incredible, and shows the great confidence Sleeping Duck have in their hybrid design.

Sleeping Duck Mattress Dimensions and Weight

The Queen size of the SD Mach II is 203 by 153cm and 31cm thick and 52kg, putting it on the heavier end of hybrid beds.

How strong is the edge support?

Sleeping Duck uses springs right up to the edge of the mattress (many use a wall of polyfoam for edge support. They use a thicker coil on the edges to reinforce structural integrity when you sit on the edge of the bed. Coil mattresses often have better edge support than foam mattresses, so for those with any mobility issues, this is something to think about as strong edge support will help you physically get out of bed more easily.

Have you considered this similar mattress?

Origin Hybrid Pro Mattress

Click for Best Price
Time To Sleep Editor's Choice
"This is a high quality mattress - durable, cool, plush yet supportive, and suits all sorts of sleepers."

What was the buying experience like?

Purchasing Online

Sleeping Duck accepts Visa, Mastercard, and Paypal. They’ve partnered with ZipMoney to finance your purchase over 6 months, interest free. Payment can be done online or over the phone, though phone payments will only work with credit cards.

Delivery of the mattress

Most Australian metropolitan and most regional areas will get Sleeping Duck’s free next day delivery, except for Tasmania and Northern Territory. Outside of these areas, delivery will usually be dispatched in 1-2 days. You can book the day of delivery when you make your purchase, and will be sent an SMS when they are half an hour away from you.

If you want to give them authority to leave the mattress in a safe place, you’ll need to email them at least a day before delivery with your order number and instructions.

Sleeping Duck, Unboxed

The unboxing – how exciting!

The box has wheels. In other articles I’ve expressed my excitement for wheels on boxes, and I don’t think that excitement will ever go away. Seriously, how is everyone not rolling with this?

The SD Mach II is a heavy bed as I mentioned earlier, so I cannot understate how helpful those wheels are. Rip and pull away the plastic wrapping and eventually it’ll roll out. You have to flip it over once it unrolls (it’ll be upside down), so an extra pair of hands will be handy. When it’s unrolled and flipped, cut the plastic to break the vacuum seal and let the bed inflate.

Customer Service

Sleeping Duck will give you a call or shoot you an email to touch base with you after 40 nights to check if you need any readjustments in firmness.

Email and Form

I filled out their online form with some questions, and they answered the very next day in great detail and in full. My follow up email was also answered the following day, so it’s great to know that someone is personally regularly checking and replying to any questions or concerns you send via email. They were also honest about why certain questions couldn’t be answered, such as it being proprietary information, or the information just wasn’t known to them. Rather than try to give me very wordy answers to dodge the question and hide the fact that the information wasn’t readily known to them (it was a fairly specific question after all), they were honest and still gave me their best guess in light of knowing how most of the industry process materials.

Warranty – Anything to watch out for?

It’s evident by the 10 year warranty that Sleeping Duck are confident in the durability of their mattresses and the high-quality materials used in it. The main thing to make sure of is that you rest the bed on an appropriate surface. Don’t use it on an adjustable mattress base or a bed base of springs – foam mattresses and not innerspring are best for those bed bases. You want firm and flat throughout the mattress, so don’t just prop it up along the edges. It either needs grounded beams supporting the mattress’ middle (two beams with legs for a king mattress) or slats no more than 8cm apart. The mattress needs to be supported so that it doesn’t bend or sag regardless of whether someone is sleeping on it or not.

What is covered

The one thing Sleeping Duck’s warranty will cover are body impressions that, through normal use, are deeper than 3cm, assuming that you are using a suitable bed base, as detailed above.

What is not covered

Less than 3cm deep impressions are normal, as that is the memory foam molding itself to you. Also Sleeping Duck won’t cover firmness adjustments after the 100 day trial. You can buy new layers of foam at your preferred level of firmness, but it will be at your cost. Any damage that comes from abnormal use or from moving the mattress around won’t be covered, and they won’t cover odours or stains (use a mattress protector!). Sleeping Duck also won’t cover “minor manufacturing anomalies” like small tears that you can fix quite easily yourself, or general wear and tear. All in all, reasonable. Note that the warranty only covers the initial purchaser, so if you got the mattress second hand, it won’t apply.

Warranty Process

Sleeping Duck won’t be able to send someone out to assess your warranty claim, so they will give you instructions on photos you will need to take, as well as of the bed base you’re using without the mattress on top. It will be extensive (fair enough!) and you will need to take photos of each layer – it’ll probably take up to half an hour to get all the photos taken properly.

For the sag to be significant enough, the mattress as a whole needs to have sagged more than 3cm. Then they’ll assess each layer and replace any layers that have sagged more than 8% of their original height (it should be 10%, but they’ll be gracious and deem 8% sufficient). It’s not a brand new bed, but your bed will be at a level comparable for how long it’s been since you bought it.

Returns – How are the beds disposed?

Sleeping Duck offers a trial for 100 nights, with free adjustments and refunds if you’re not satisfied in this time. You’ll be required to sleep on the mattress for 3 weeks though before making any adjustments, as you need time to get used to the mattress before knowing whether you actually need an adjustment or not. They will allow for one mattress return per household.

But what happens to the beds that are returned? They get collected by Sleeping Duck themselves, and given to a charity partner or failing that, a recycling team so the foam can be made into things like carpet underlay. If you’re in a remote area though, you may be asked to take the mattress directly to a local charity. When the mattress has been picked up (or you have taken it to a local charity), the money will be returned to you.

SUMMARY

Sleeping Duck’s main point of attraction is the level of customisation that very few other mattress brands can compete with. Definitely take advantage of the 100 night trial period to mix, match, and adjust till you’re happy with your firmness option. And there is peace in mind in knowing that as your life circumstances change (for instance, pregnancy), the Sleeping Duck mattress system is flexible enough to change with you to give you consistent quality of sleep.

While I do generally prefer latex foam over polyfoam, it wouldn’t be possible to control every aspect of latex foam’s quality, softness and feel in the same way that Sleeping Duck have with their custom foams. It’s a versatile system with high-quality materials, so if you’re looking for a comfortable mattress that fits into your life, this would be one of my top choices.

Have you considered this similar mattress?

Origin Hybrid Pro Mattress

Click for Best Price
Time To Sleep Editor's Choice
"This is a high quality mattress - durable, cool, plush yet supportive, and suits all sorts of sleepers."

Sleeping Duck SD MACH II

Our Verdict
If you and your sleeping partner have wildly different preferences, this might be your answer.
What we like
  • The interchangeable firmness system lets you adjust the firmness level
  • You can choose different firmness for half and half, or even different zones along your body
  • Did I mention the interchangeable firmness system?
Considerations
  • It's expensive. A single mattress comes at $999.
  • It is very heavy. I have video footage of my brother falling on his bum while trying to get it up the stairs which will definitely be shown at his wedding.

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