Sleeping Duck Mattress

Sleeping Duck Mattress Review

The Sleeping Duck Mattress is one of Australia’s most popular and well-known mattresses. Now in its MACH II version, this mattress combines a robust innerspring support system with one of the highest levels of customisation in the Australian mattress market.

In this Sleeping Duck Mattress review, we take a close look at its comfort, support, customisation options, build quality, and value for money. We also compare its different firmness options to help you decide whether this mattress is right for you.

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✏️ Product summary

• Innerspring mattress
• Highly customisable firmness
• Mattress in a box
• 100 night trial period
• 10 year warranty
• Current best price is $1,649 (queen)
• Click SHOP NOW to unlock this price

Purchase and delivery

How do I buy the Sleeping Duck Mattress?

The Sleeping Duck Mattress can be conveniently ordered online through the Sleeping Duck website and delivered Australia-wide.

The mattress arrives compressed in a compact box, although larger sizes (such as queen and king) are noticeably heavy. We recommend having two people available for unpacking.

Sleeping Duck offers free standard delivery across most metropolitan areas and selected regional locations, with next business day delivery available in many suburbs. Customers can generally choose a preferred delivery day or time slot during checkout.

Our box arrived in good condition, and the built-in transport wheels made manoeuvring much easier.

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

Standard delivery includes front door delivery, while premium delivery options are available in selected areas of Victoria, South Australia, New South Wales, Queensland, and Western Australia. Premium services may include delivery to a room of your choice, mattress unpacking, packaging removal, and optional mattress removal.

Sleeping Duck also offers a Premium Plus delivery service in selected areas of Melbourne, Sydney, Brisbane, and Perth. This upgraded option includes SD Indestruct Bed™ assembly in addition to mattress unpacking and packaging removal.

Once unpacked, the Sleeping Duck Mattress expands relatively quickly, although we recommend allowing at least 24 hours for full decompression before sleeping on it.

As with most mattress-in-a-box products, there will be a reasonable amount of cardboard and plastic packaging to dispose of.

Aesthetics and presentation

What does it look like in real life?

Aesthetically, the Sleeping Duck Mattress makes a strong impression. Its black and charcoal colour scheme gives it a modern, premium appearance that stands out from many competing mattress-in-a-box products. At 31cm high, the mattress has a substantial profile and looks more like a traditional premium innerspring mattress than a compressed online mattress.

The overall presentation is excellent, with quality finishings throughout. The textured side fabric, subtle piping, horizontal side handles, and signature ‘SD’ centre panel all contribute to a clean and sophisticated design. Sleeping Duck has clearly placed significant attention on visual presentation and build quality.

Mattress construction

What’s inside the Sleeping Duck Mattress?

The Sleeping Duck Mattress combines premium foams with a robust multi-zoned pocket spring system. Its construction focuses heavily on customisation, pressure relief, and long-term support, while still maintaining a relatively simple and practical design.

1. BreatheTech™ Cover

The Sleeping Duck Mattress features a removable BreatheTech™ cover made from vortex spun bamboo yarn. This cover feels soft and breathable, and is designed to assist with airflow and temperature regulation during sleep.

The cover is also machine washable, which is a useful practical feature that many mattresses do not offer. Importantly, the zip system integrates neatly into the mattress design and allows easy access to the internal comfort layers for customisation purposes.

2. AntiGravity Surface Foam

Beneath the cover sits Sleeping Duck’s AntiGravity Surface Foam, which is made from high density AirGrown polyurethane foam. This top comfort layer delivers initial pressure relief and gives the mattress its responsive, slightly buoyant feel.

Unlike traditional memory foam, this material feels more breathable and easier to move around on. It contours to the body without creating an excessive sinking sensation, which should appeal to a broad range of sleepers.

3. ComponentAdapt™ Customisation Layer

Under the AntiGravity layer sits the ComponentAdapt™ customisation system – arguably the defining feature of the Sleeping Duck Mattress. This layer uses interchangeable foam inserts that allow users to adjust firmness levels across different sections of the mattress.

Initially, customers can choose between medium or firm feels, including a ‘half-half’ configuration for couples on larger sizes. Additional foam inserts can also be requested during the trial period, allowing further adjustment to suit changing comfort preferences or support needs.

4. Motherboard™ Multi-zoned Spring System

At the core of the mattress sits Sleeping Duck’s Motherboard™ spring system – a multi-zoned pocket spring unit made from twice tempered steel springs. This support system is designed to provide targeted support to different areas of the body while still maintaining good responsiveness and low partner disturbance.

The perimeter springs are noticeably reinforced, which improves edge support and helps maximise the usable sleep surface.

Firmness adjustments

How does the customisation work?

As mentioned earlier, the Sleeping Duck Mattress offers one of the highest levels of mattress customisation available in Australia. This allows users to adjust the firmness of the mattress to better suit their comfort preferences and support needs.

On the initial order, customers can choose either a medium or firm feel. Queen, king, and super king sizes are also available in a ‘half-half’ configuration, allowing couples to select a different firmness on each side of the mattress.

Sleeping Duck recommends allowing a 21-night adjustment period before making any firmness changes. If your initial firmness selection still doesn’t feel quite right after this period, customers can request alternative foam inserts during the 100 night trial period at no additional cost. These inserts are available in soft, medium, firm, and extra firm options.

Sleeping Duck takes this concept even further by allowing different sections of the mattress to be adjusted independently. This means users can customise support levels for specific areas of the body if required, which is best demonstrated in our video review.

This level of adjustability is a major point of difference for the Sleeping Duck Mattress and may be particularly beneficial for couples, combination sleepers, or those experiencing back pain and spinal discomfort.

Comfort and support

What’s it like to sleep on the Sleeping Duck Mattress?

The outer cover of the Sleeping Duck Mattress feels breathable, smooth, and durable. It gives the mattress a premium surface feel and may help with temperature regulation during sleep.

The medium version offers good pressure relief with a foamy yet responsive feel. It is not overly soft, but it does have more cushioning than some other medium mattresses we have tested. This should make it particularly suitable for side sleepers, while still offering enough support for many back sleepers.

All of our expert reviewers agreed that the medium version has a true medium feel. By majority vote, we rated it as 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 Porto Bed Base which is a good quality bed base with rigid slats.

As you would expect, the firm version feels noticeably firmer than the medium option, although it still maintains a comfortable level of cushioning. It offers a more supportive and stable sleep surface, with very little sinking or dipping detected during our testing.

This firmer feel should suit many back sleepers and some stomach sleepers, although it may still accommodate side sleepers who prefer a firmer mattress feel.

All of our expert reviewers agreed that the firm version has a medium-firm feel. By majority vote, we rated it as 7.5 / 10 on the firmness scale, with 10 being the firmest.

Firm Version

If neither the medium nor firm options feel supportive enough, Sleeping Duck also allows customers to request an extra firm insert during the 100 night trial period.

The extra firm version delivers a very firm and highly supportive feel. During testing, it maintained body position particularly well and offered minimal sinkage, making it a suitable option for those who prefer a firmer sleep surface.

This option should generally suit back sleepers and some stomach sleepers, although comfort preferences will naturally vary between individuals.

All of our expert reviewers agreed that the extra firm version has an extra-firm feel. By majority vote, we rated it as 8.5 / 10 on the firmness scale, with 10 being the firmest.

Extra-Firm Version

If the medium and firm options don’t offer enough comfort or softness, Sleeping Duck also allows customers to request a soft insert during the 100 night trial period.

As expected, the soft version offers increased pressure relief with a more cushioned and contouring feel. It feels noticeably softer and more adaptive than the other firmness options, with a slightly deeper level of sinkage.

This softer feel should generally suit side sleepers and those who prefer a plusher sleep surface, although suitability will naturally vary between individuals.

All of our expert reviewers agreed that the soft version has a medium-soft feel. By majority vote, we rated it as 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 excellent back support. Its Motherboard™ pocket spring system feels stable, robust, and highly supportive, while still maintaining a responsive and balanced feel.

During testing, the spring system maintained body position particularly well and provided strong support across the lumbar and hip regions. The overall design should comfortably accommodate a wide range of body types and sleeping positions, and the quality of the support system was genuinely impressive.

Responsiveness across all firmness options was very good during testing, making it easy to change sleeping positions without feeling ‘stuck’ in the mattress. The soft version is slightly less responsive due to its plusher comfort layers, although this is fairly typical.

Responsiveness

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

What else should I know?

The overall level of quality and craftsmanship of the Sleeping Duck Mattress is excellent. The foams, fabrics, stitching, and finishings all feel premium, and the mattress presents as a thoughtfully engineered product.

The removable zip cover feels durable and well constructed, while the internal foam inserts are relatively easy to rearrange during the customisation process. It is worth noting though that swapping inserts is generally easier with two people.

Each foam insert is also enclosed within its own protective fabric cover, which is a noticeable improvement over earlier versions of the mattress.

The Sleeping Duck Mattress offers one of the highest levels of mattress customisation available in Australia.

The horizontal side handles feel strong and secure, making the mattress easier to manoeuvre when required.

Edge support is also excellent thanks to the reinforced perimeter spring system. This allows good use of the full sleep surface and provides stable support when sitting on the edge of the mattress.

Partner disturbance is low overall, with the pocket spring system helping to minimise motion transfer between sleepers. As expected though, larger mattress sizes will generally perform slightly better in this area.

The foams used in the Sleeping Duck Mattress have also been independently tested and certified by Global GreenTag, reflecting a high environmental standard.

As mentioned earlier, the mattress sits approximately 31cm high, so standard fitted sheets should fit without issue.

Other details

Product weight of each mattress size (estimated):

• Super King Mattress: ~67kg
• King Mattress: ~60kg
• Queen Mattress: ~53kg
• Double Mattress: ~43kg
• King Single Mattress: ~36kg
• Single Mattress: ~30kg

Additional information

• Mattress height: 31cm
• Maximum recommended weight: approximately 140kg per sleeper (queen, king, and super king sizes)

Country of Origin

The foams used in the Sleeping Duck Mattress are produced in Sydney, while the springs and final mattress assembly are completed in China.

Bed base compatibility

What type of 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 Porto 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

What happens if I don’t like it?

The Sleeping Duck Mattress comes with a 100 night trial period, which is standard for many leading online mattress brands in Australia. This allows customers to test the mattress at home and return it for a refund if it is not suitable.

Included within the 100 night trial are free firmness adjustments, allowing users to tailor the mattress feel to their comfort preferences. Sleeping Duck recommends allowing a 21-night adjustment period for each firmness configuration before making additional changes.

Sleeping Duck will also arrange mattress collection and provide a full refund within the trial period if required. It is worth noting that the company currently limits returns to two mattresses per household under the 100 night guarantee.

The Sleeping Duck Mattress is backed by a 10 year limited warranty covering faulty materials and workmanship.

Available sizes

What size options are available?

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.

The graphic below includes all of Australia’s standard bed (mattress) sizes in 2026. Again please note that the Sleeping Duck Mattress is available in 6 of these sizes.

Prices

How much does the Sleeping Duck Mattress cost?

Here are the current retail prices of the Sleeping Duck Mattress:

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

Unlike many online mattress brands, Sleeping Duck generally does not offer discount codes or percentage-off sales on the mattress itself. Instead, the company occasionally runs bundle promotions with products such as the Sleeping Duck Indestruct Bed.

Did you know?

Sleeping Duck was on Shark Tank!

In 2017, Sleeping Duck co-founders Winston Wijeyeratne and Selvam Sinnappan appeared on Channel 10’s Shark Tank Australia, seeking investment for their growing mattress company.

During the episode, the pair received several offers from the Sharks, including a $500,000 offer for 15% of the business. Despite strong interest from the investors, the founders ultimately declined the deal – a decision that generated considerable attention at the time.

Since then, Sleeping Duck has grown into one of Australia’s most recognisable online mattress brands. See the full video here.

Final verdict

Is this the right mattress for you?

The Sleeping Duck Mattress combines excellent build quality, impressive support, and one of the most advanced customisation systems currently available in the Australian mattress market.

Its Motherboard™ pocket spring system feels stable, robust, and highly supportive, while the interchangeable comfort layers allow users to fine tune the mattress feel to suit changing comfort preferences and support needs. This flexibility makes the mattress particularly appealing for couples and those who have struggled to find the right firmness level in a conventional mattress.

The overall presentation and craftsmanship are also excellent, with strong edge support, low partner disturbance, and high-quality finishings throughout.

While the price point sits above some competing mattress-in-a-box products, the level of engineering, adjustability, and overall refinement help justify the premium positioning.

Bedbuyer’s rating:  4.6 / 5

Here are our ratings in each category:

For a full roundup, see our guide to the best mattresses in Australia.

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