Sleeping Duck Mattress

Sleeping Duck Mattress Review

The Sleeping Duck Mattress (MACH II) is perhaps the most popular and well-known mattress in Australia.

One of the stand out features of the Sleeping Duck Mattress is its extraordinary level of customisation. This allows the user to adjust the firmness of the mattress, if desired.

✏️ Product summary

• Innerspring mattress
• Extraordinary level of customisation
• Mattress in a box
• 100 night trial period
• Current best price is $1,649 (queen)
• Click SHOP NOW for best price

Purchase and delivery

The Sleeping Duck Mattress can be conveniently ordered online through the Sleeping Duck website. The mattress will be delivered to your door in a compact box, with larger sizes (e.g. queen and king) being noticeably heavy. So, be prepared.

Sleeping Duck offers free delivery Australia-wide, and shipping times are generally fast. For more information about delivery, please see our Delivery information section further down.

Sleeping Duck offers a premium delivery service (for an additional fee) to certain areas of Victoria, South Australia, New South Wales, Queensland, and Western Australia. This premium service option includes the delivery of your mattress to a room of your choice, mattress unpacking, and packaging removed.

In most areas, Sleeping Duck can also remove your old mattress. You just need to select the ‘mattress removal’ option at checkout.

Our box arrived in good condition, and the box’s handy transport wheels allow for easy manoeuvrability. It is possible with one person, but we do recommend having two people available to take delivery of and unpack a mattress in a box.

You can see this mattress in ‘real life’ in our video review here:

Keep in mind that there will be a substantial amount of packaging (cardboard and plastic) to dispose of. So, some planning may be required along with plenty of bin space.

Once all packaging is removed, the Sleeping Duck Mattress should be ready to sleep on after a few hours. With that said, we always allow a mattress in a box to decompress for at least 24 hours before testing.

Aesthetically speaking, the Sleeping Duck Mattress makes a strong statement. It sits 31cm high which is a typical height of an innerspring mattress. It gives off a modern, edgy vibe and oozes sophistication.

The ‘SD’ brand label and rubber logo tag also give the product a distinct sense of class.

Mattress construction

As mentioned above, the Sleeping Duck Mattress is an innerspring mattress and includes a breathable cover, two layers of comfort foam, and a strong spring system.

1. BreathTech Cover

The Sleeping Duck Mattress has a BreathTech cover that is made from bamboo fabric. This has been specially designed for breathability and comfort.

This cover is also removable (and washable) and forms an important part of the customisation process.

2. Foam Comfort Layers

The BreathTech cover sits over an ‘AntiGravity Surface Foam’ that is made from high density AirGrown polyurethane foam.

The second layer of the comfort section is named the ‘ComponentAdapt Customisation’ layer. This layer controls the firmness of the mattress, and it is this layer that can be altered.

3. Motherboard Spring System

The comfort layers sit over a ‘multi-zoned’ pocket spring system called the Motherboard. This spring unit has tailored support zones to suit specific parts of your body and is made from twice tempered steel springs.

The Motherboard also has a reinforced perimeter support for enhanced edge firmness.

How does the customisation work?

As we touched on earlier, the Sleeping Duck Mattress has an incredible level of customisation. This means that you can choose from a number of firmness options to suit you, and your partner.

With that said, you can simply order the mattress without ever adjusting the firmness.

On your initial order, you can choose either ‘medium’ (on both sides) or ‘firm’ (on both sides).

Additionally on your initial order, you have the option to order ‘half-half’ configuration- firm on one side, and medium on the other. This half-half option only applies to super king, king, and queen sizes and is ideal for couples who have different firmness preferences.

If you aren’t completely satisfied with your initial selection, you can request from Sleeping Duck (at no charge) additional foam layers to alter the firmness of your mattress.

For example, let’s say you initially selected medium (on both sides) on your initial order. If your partner found his/her side too soft, you could request a firm insert for that side.

It’s worth noting though that to claim your free additional foam layer/s, you must wait 3 weeks from the time of delivery, and it must be done within the 100 night trial period. The additional layers of foam can be soft, medium, firm, or extra firm, so there are several options to choose from.

Sleeping Duck takes this customisation to the next level, by allowing you to request different foam pieces for different sections of the body. This feature is best shown in our video review (above).

This degree of adjustability is revolutionary. Although there are many customisable mattress options on the market, it’s fair to say that the Sleeping Duck Mattress has the highest level of customisation of any mattress in Australia.

This unique adjustability makes this product very suitable for those who experience back pain, or for those who suffer with a spinal condition.

Comfort and support

The outer over of this mattress feels breathable and durable. It may help to regulate temperature during sleep.

The medium version of the Sleeping Duck Mattress offers nice pressure relief with a foamy yet responsive feel. It is a little softer than some other medium versions that we have tested, but it still offers reasonable back support.

This medium version should suit most side sleepers, but it may also accommodate back and stomach sleepers. Understandably though, this suitability will vary between individuals.

All of our expert reviewers agreed that this medium version has a ‘medium’ feel. By majority vote, we settled on a 5.5 / 10 on the firmness scale (with 10 being the firmest).

Medium Version

Please note that our firmness ratings are just a guide and they do not necessarily relate to comfort.

Furthermore, our firmness ratings are assigned based on Bedbuyer’s testing process and these may differ from firmness ratings given by individual companies. Mattress firmness will also vary depending on the type of bed base used.

We tested the Sleeping Duck Mattress on the Chiropedic Bed Base which is a good quality bed base with rigid slats.

As you would expect, the firm version is firmer than the medium option. It isn’t super firm though, and is nicely balanced with comfort and support. It maintains body position well and didn’t detect any dipping or sinking.

This firm version should suit back most back sleepers, but will likely accomodate side sleepers and stomach sleepers as well.

All of our expert reviewers agreed that this firm version has a ‘medium-firm’ feel. By majority vote, we settled on a 7.5 / 10 on the firmness scale (with 10 being the firmest).

Firm Version

If neither the firm or medium options are to your liking, you do have the option to request ‘extra firm’ or ‘soft’ foam layers to adjust the mattress firmness, as discussed above.

The extra firm option is particularly firm, and will generally suit back sleepers. Again, this suitability will vary between individuals.

All of our expert reviewers agreed that this extra-firm version has an ‘extra-firm’ feel. By majority vote, we settled on an 8.5 / 10 on the firmness scale (with 10 being the firmest).

Again, please note that our firmness ratings are just a guide and they do not necessarily relate to comfort.

Extra-Firm Version

As you might expect, the soft version offers plenty of pressure relief, and feels foamy and spongy. Some users may experience a certain degree of sinking.

The soft version will generally suit side sleepers but this suitability may vary.

All of our expert reviewers agreed that this soft version has a ‘medium-soft’ feel. By majority vote, we settled on a 4.5 / 10 on the firmness scale (with 10 being the firmest).

Soft Version

Assuming that you select a firmness option suitable for your needs, the Sleeping Duck Mattress offers admirable back support. Its pocket spring system (the Motherboard) feels stable, robust, yet nicely responsive.

All firmness options of the Sleeping Duck Mattress respond well to normal sleep movements, however the soft version is less responsive due to the thicker foam layers.

In any case, we rated the overall level of responsiveness on this mattress as ‘optimal’. In basic terms, this means that changing sleep positions (and intimate activities) shouldn’t be any trouble.

Please note that our responsiveness scales are just a guide and preferred responsiveness levels will vary between individuals. It’s worth noting also that innerspring mattresses are generally more responsive than foam mattresses.

The finer details

The overall level of quality and craftsmanship of the Sleeping Duck Mattress is excellent. The quality of the foams and fabrics is of a high standard, as is the quality of the stitching and finishings.

The zip mechanism that removes the top cover is strong and the ComponentAdapt foam layers and pieces are easy to rearrange. With that said, it is much easier to swap foam layers with two people.

It’s worth mentioning also that each foam layer has a protective fabric cover. This is a noticeable upgrade from its original version (released back in 2014), when the foam layers were ‘naked’.

The Sleeping Duck Mattress has the highest level of customisation of any mattress in Australia.

The Sleeping Duck Mattress has two side handles on each side. These are positioned horizontally and will make transporting and manoeuvring the mattress much easier.

Edge support is strong thanks to Sleeping Duck’s reinforced perimeter support. So, you should be able to use the full surface of the mattress, without the fear of rolling off the edge. As usual though, edge support is better in the firm and extra firm options.

The mattress should also accommodate sitting activities, easily.

The level of partner disturbance on this mattress is low, so a restless partner shouldn’t cause any problems. With that said, partner disturbance will vary.

For example, larger mattress (e.g. king size) will usually involve lower amounts of motion transfer. Partner disturbance will also depend on the size of the occupants of the bed.

You may notice a new product smell upon opening your new mattress, but this should dissipate within a few days or weeks.

It’s worth noting that the foams used in this mattress have been independently tested and certified by GECA (Good Environmental Choice Australia).

GECA’s eco label provides reassurance to customers that the product has a minimal impact on the environment and is safe for use by humans.

As mentioned earlier, the Sleeping Duck Mattress sits 31cm high. With this in mind, any standard size fitted sheet should fit around this mattress.

What bed base should I use?

As with most mattresses, we recommend the Sleeping Duck Mattress to be used with a bed base with flat panel slats such as the Sleeping Duck Indestruct Bed.

A bed base with solid slats such as the Chiropedic Bed Base would also be very suitable.

We would advise against using a bed base with flexible (posture) slats as this type of base may not provide adequate support. Ultimately, the use of an unsupportive mattress foundation may void the mattress warranty.

Sleeping Duck Indestruct Bed

Furthermore, we do not recommend the Sleeping Duck Mattress to be used with an adjustable (electric) bed base as this may also void the warranty. Here is our full list of mattresses that are compatible with an adjustable bed base.

It’s worth noting here that mattress firmness, performance, and durability will vary with different bed bases.

Trial period and warranty

The Sleeping Duck Mattress comes with a 100 night trial period, which is a typical trial period in the online mattress market. This means that you can return the mattress for a refund if you are not satisfied (conditions do apply).

As mentioned earlier, requests for firmness adjustments must be done within the 100 night trial period. Requests for firmness adjustments cannot be made in the first 3 weeks (from the time of delivery).

This mattress also comes with a 10 year warranty to cover any faulty materials or workmanship. This is also a typical warranty length of many of its online competitors.

Available sizes

The Sleeping Duck Mattress is available in 6 sizes (super king, king, queen, double, king single, and single size) so it should accommodate most sleeping arrangements.

Here are Australia’s standard bed (mattress) sizes in 2025.

Did you know?

In 2017, Sleeping Duck co-founders Winston Wijeyeratne and Selvam Sinnappan appeared on Channel 10’s Shark Tank series. This reality TV series showcases a range of entrepreneurs seeking investment from a panel of successful businesspeople.

Despite a number of offers and much negotiating, the pair of co-founders controversially declined a $500,000 investment for 15% of the company. See the full video here.

Final verdict

The Sleeping Duck Mattress combines quality, sophistication, and a clever design. It has revolutionised the mattress industry in Australia and Sleeping Duck’s attention to detail must be commended.

Bedbuyer’s rating:  4.6 / 5

Here are our ratings in each category:

Did you know? The Sleeping Duck Mattress made it into Australia’s Top 12 Mattress in a Box for 2025.

If you have any questions about the Sleeping Duck Mattress, please comment below.

Recommended Retail Prices

• Super King Mattress: $2,699
• King Mattress: $1,999
• Queen Mattress: $1,649
• Double Mattress: $1,349
• King Single Mattress: $1,099
• Single Mattress: $999

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Payment & Finance Options

VISA, Mastercard, AMEX, PayPal, Zip Pay, Humm, Apple Pay, Google Pay.

Delivery information

Where does Sleeping Duck deliver?

Sleeping Duck delivers Australia wide, except for some remote locations.

Sleeping Duck offers free next business day delivery to most Metropolitan and some Regional suburbs. If they are unable to offer this to your area, you will be informed of this during checkout.

To discuss other potential delivery options for locations outside of their delivery network, please contact Sleeping Duck directly.

How do I book my delivery?

Assuming that your location is eligible for day of choice delivery and stock is available, you’ll receive the option to book your delivery day during purchase.

If we are awaiting stock, you will be provided with an approximate delivery timeframe and will be unable to select your date of choice. You will then receive an SMS to book in delivery once your order is ready for dispatch.

What does Standard delivery include?

Standard delivery is free on all Sleeping Duck orders within our delivery network.

What it includes:

• Scheduled delivery day or time slot – to ensure your order arrives when you’d like, a delivery day or time slot can be selected for most Metropolitan and some Regional areas. If your delivery is coming via an alternative courier, you can learn more below.
• Delivery to the front door – this is provided there are no more than four external steps leading up or down to the door, and good external access for the driver and their vehicle.
• Apartment deliveries to the front door of the apartment – this is provided there is a lift, and someone is available to escort the driver. It is also subject to individual strata rules, which may prohibit delivery past the lobby.
• Authority to leave – our couriers can leave your order by the front door, even if you’re not home. If ATL is selected, your order will be delivered on your chosen day but may not arrive in your selected time slot. By waiving the signature requirement, Sleeping Duck is not responsible for lost, stolen, or missing boxes that are marked as delivered.

What it doesn’t include:

• Delivery into the home – our couriers are not able to deliver into your home with this delivery service.
• Mattress unpacking and base assembly – instructions and tools are provided for self-assembly.
• Rubbish removal – our couriers do not remove the packaging. You can find more information on how to best dispose of the box and soft plastic in our FAQs.
• Removal of an existing base – our couriers currently don’t offer a service to remove old bed frames or bases. You can find more information on our recommendations for bed base removal in our FAQs.
• Removal of an existing mattress If you’re located in Melbourne, this is available as an optional add-on during checkout. Your existing mattress must be placed outside the home for collection at the time of delivery. For every Mattress being delivered on the day, we will be able to take an existing mattress away. If we’re not delivering a Mattress, we can still remove up to one mattress. Once an old mattress has been collected, it cannot be returned.

For everyone’s safety, the drivers can’t accept assistance when delivering or unloading your items. If access to your front door may be tricky for the courier, or the location exceeds our step limit, please get in touch with SDHQ to discuss potential options.

Sleeping Duck also offer premium delivery options.