By Dr Jon Tan - Chiropractor & Editor Tested by the Bedbuyer Review Team
In recent years, mattress companies have increasingly focused on more user-friendly designs, giving sleepers the ability to adjust comfort and firmness levels to better suit their individual needs.
In this guide, we compare the best customisable mattresses currently available in Australia, based on our hands-on testing.
Australia’s best customisable mattresses
- Sleeping Duck Mattress
- Onebed Max Mattress
- Dusk&Dawn Harmony
- Peace Lily Latex Mattress
- Koala Mattress
- Macoda Mattress
- Premium Adapt Mattress
- Atlantis S1 Mattress
- Ecosa Pure Mattress
- Ausbeds Cloud Mattress
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Keep reading for detailed insights on each top pick, plus some handy buying tips at the end. And if you’ve got any questions, drop a comment below!
1. Sleeping Duck Mattress
$1,566.79 (Queen)
The Sleeping Duck Mattress (Mach II) is one of the most well-known and widely used mattresses in Australia, and it stands out as the clear leader when it comes to customisation.
What truly sets the Sleeping Duck apart is its extraordinary level of adjustability. Sleepers can choose medium or firm on each side at the time of purchase, including a half-half option for couples. Beyond this, additional foam layers can be requested during the trial period to further refine the feel.
This customisation goes a step further than most competitors by allowing different sections of the mattress to be adjusted independently. This makes it possible to fine-tune support across specific areas of the body, which can be particularly beneficial for those with back concerns or more complex comfort needs. While this process does require contacting the company, we have consistently found Sleeping Duck’s customer service to be reliable and responsive.
In our hands-on testing, the mattress performed well across all configurations. The feel is balanced and supportive, with good pressure relief and strong responsiveness, making it easy to change positions throughout the night. Edge support is excellent, and partner disturbance remains low for an innerspring design.
With a 100-night trial, 10-year warranty, and a highly refined customisation system, the Sleeping Duck Mattress remains the benchmark in this category. For sleepers wanting maximum flexibility and the ability to truly personalise their mattress, it is one of the most compelling options available.
2. Onebed Max Mattress
$1,053.50 (Queen)
The Onebed Max Mattress is the flagship model in the Onebed range and offers a well-balanced mix of comfort, support, and adjustability. This mattress combines multiple comfort layers with a 5-zone pocket spring system, resulting in a stable and supportive overall feel.
A standout feature is its adjustable firmness design. By flipping the top comfort layer, sleepers can choose between a more responsive medium-firm feel or a slightly softer, more spongy feel. In our testing, both configurations felt distinct and practical, which isn’t always the case with adjustable mattresses.
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In its default setup, the mattress feels slightly firmer and more buoyant, making it well suited to back and combination sleepers. Switching to the softer configuration provides a more cushioned feel that should appeal to side sleepers or those who prefer a gentler surface. Across both setups, support remains strong and consistent.
Edge support is a highlight, thanks to the perimeter foam encasement, which helps create a stable and usable sleep surface. Build quality is solid for the price, and the zip-off design makes adjusting the layers simple. Partner disturbance is present but not excessive for most sleepers.
With a 125-night trial, 10-year warranty, and a very competitive price point, the Onebed Max Mattress represents strong overall value. It’s a practical choice for sleepers wanting comfort, support, and easy firmness flexibility in one package.
3. Dusk&Dawn Harmony
$2,463.12 (Queen)
The Dusk&Dawn Harmony Mattress is an Australian-made innerspring mattress that stands out for its premium feel and high-quality construction. It combines plush comfort foams with a 5-zone pocket spring system and reinforced edge support, resulting in a refined and well-balanced overall design.
A key feature of the Harmony is its flippable comfort layer, which allows sleepers to switch between a medium-firm and medium-soft feel. The adjustment process is simple and intuitive, requiring only a quick unzip and flip of the internal layer, with no additional components needed.
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In our hands-on testing, both firmness options felt very comfortable, with only subtle differences between the two. Regardless of configuration, the mattress delivers a plush, supportive feel that should suit most sleeping positions. The overall comfort level is a standout, even when viewed independently of its customisation feature.
Support is strong and consistent, with the pocket spring system providing good spinal alignment and stability across the mattress. Edge support is also impressive, thanks to the reinforced foam wall, and partner disturbance is kept to a minimum.
With Australian manufacturing, premium materials, and a straightforward customisation system, the Dusk&Dawn Harmony Mattress is a top-tier option in this category. For sleepers wanting a high-end mattress with a touch of flexibility, it is a very compelling choice.
4. Peace Lily Latex Mattress
$1,599 (Queen)
The Peace Lily Latex Mattress is a natural, eco-focused mattress made entirely from 100% natural latex and organic cotton. It offers a simple but effective customisation system, combined with a durable and highly supportive overall design.
The mattress features a flippable construction, allowing sleepers to choose between a medium feel on one side and a firmer feel on the other. This is a straightforward and reliable way to adjust comfort, without the need for internal layer changes or additional components.
In our hands-on testing, both sides felt well balanced, with the medium side offering more pressure relief and the firm side delivering a slightly more supportive, buoyant feel. The latex provides a responsive surface that makes it easy to move and change positions during sleep.
While the customisation is simple, it is effective, and can be extended further with the optional latex topper for those wanting additional softness or firmness. It’s worth noting that due to the weight of natural latex, flipping the mattress is best done with two people.
With strong eco certifications, a 25-year warranty, and a focus on natural materials, the Peace Lily Latex Mattress is a standout option in this category. It’s particularly well suited to sleepers wanting a non-toxic mattress with simple, long-term versatility.
5. Koala Mattress
$1,124.10 (Queen)
As we’ve seen across these best customisable mattresses, most offer simple ways to adjust firmness without needing to replace the entire mattress. A good example of this approach is the Koala Mattress, which is one of Australia’s most recognisable foam mattresses.
The mattress includes a separate comfort layer that can be unzipped and flipped to switch between a medium-firm and firm feel. The process is straightforward, with clear tags on the layer indicating orientation, making it easy to adjust without confusion.
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In our hands-on testing, both configurations felt supportive and well-balanced, although the difference between the two firmness options is relatively subtle. The medium-firm setting should suit most sleepers, while the firmer option may appeal more to those wanting a denser, more supportive surface.
As expected from a foam mattress, motion isolation is excellent, making it a strong choice for couples. Responsiveness is lower than an innerspring design, so movement can require slightly more effort, and edge support is softer but still within normal limits for this category.
With a 120-night trial, non-toxic certifications, and a simple, user-friendly customisation system, the Koala Mattress remains a solid option. It’s best suited to sleepers who prefer a foam feel and want the flexibility to adjust firmness without overcomplicating the setup.
6. Macoda Mattress
$1,175 (Queen)
The Macoda Mattress is a highly comfortable innerspring mattress that has evolved significantly from its original version. While earlier models were not customisable, the latest version now includes an adjustable design, reflecting the broader shift in the mattress-in-a-box market.
The mattress allows users to create multiple firmness options by unzipping the cover and rearranging the internal foam layers. Sleepers can configure the mattress into soft, medium, or firm feels, with an additional extra-firm option available if required.
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In our hands-on testing, the medium configuration delivered a very comfortable and well-balanced feel, with excellent pressure relief. The softer option offers a plush, cushioning surface, while the firmer setups provide slightly more support, although the differences between some configurations are relatively subtle.
Support remains consistent across all setups, with the 5-zone pocket spring system providing good spinal alignment and stability. Responsiveness is also impressive for a mattress with multiple foam layers, making it easy to move and change positions during the night.
With its strong focus on comfort, flexible configuration options, and competitive price point, the Macoda Mattress is a standout in this category. It’s particularly well suited to sleepers who prioritise comfort but still want the ability to fine-tune their mattress over time.
7. Premium Adapt Mattress
$1,390 (Queen)
The Premium Adapt Mattress (formerly Eva Mattress Plus) is a versatile innerspring mattress that offers a more hands-on approach to customisation. It combines multiple foam layers with a 5-zone pocket spring system, delivering a supportive and well-balanced overall feel.
A key feature of this mattress is its ability to create three distinct firmness options – soft, medium, and firm. This is achieved by unzipping the cover and rearranging the internal foam layers, giving users a greater level of control compared to simpler flip-style designs.
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While the system is effective, it is slightly more involved than other adjustable mattresses. The soft and medium configurations are relatively easy to set up, but creating the firm option requires a more detailed rearrangement of the internal layers. As such, this process is best done with two people.
In our hands-on testing, the mattress performed well across all configurations, with the soft and medium options offering strong comfort and pressure relief. The underlying spring system feels stable and supportive, and responsiveness is good across the board, making it easy to move during sleep.
With a flexible layering system, optional split firmness for couples, and the ability to fine-tune comfort over time, the Premium Adapt Mattress is a strong option in this category. It’s best suited to sleepers who want more control over their setup and are comfortable making adjustments to achieve their ideal feel.
8. Atlantis S1 Mattress
$1,679 (Queen)
The Atlantis S1 Mattress is a premium Australian-made innerspring mattress that combines high-end materials with an advanced customisation system. It features multiple comfort layers over a multi-zoned pocket spring unit, resulting in a supportive and well-balanced overall feel.
Much like the Sleeping Duck, the Atlantis S1 offers a high level of adjustability. Sleepers can choose soft, medium, or firm at the time of purchase, including a half-half option for couples. If the initial selection isn’t quite right, additional foam layers can be requested during the trial period to fine-tune the feel.
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In our hands-on testing, the mattress performed exceptionally well across all firmness options. Comfort is a real highlight here, with a smooth, pressure-relieving surface that feels slightly more refined than many comparable designs. The underlying support system is strong and stable, providing excellent spinal alignment for a wide range of sleepers.
Build quality is excellent throughout, with premium fabrics, strong edge support, and thoughtful finishing details. The mattress also offers a unique “fresh box” delivery option, meaning it can be compressed and shipped quickly without long-term storage, helping preserve material integrity.
With a 100-night trial, 10-year warranty, and a highly versatile adjustment system, the Atlantis S1 Mattress is one of the most complete options in this category. For sleepers wanting Australian-made quality with extensive customisation and premium comfort, it is a standout choice.
9. Ecosa Pure Mattress
$1,392 (Queen)
The Ecosa Pure Mattress is the flagship model in Ecosa’s range and offers a sophisticated, multi-layered design with a focus on comfort, sustainability, and performance. It combines premium foams, latex, micro coils, and a 7-zone pocket spring system to deliver a responsive and supportive overall feel.
A key feature is its adjustable firmness design. By unzipping the cover, the main comfort layer can be flipped to switch between a softer or slightly firmer feel. The layer includes clear tags for orientation, although due to its weight and construction, the adjustment is best done with two people.
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In our hands-on testing, both configurations felt comfortable and well balanced, with only a moderate difference between the two. The mattress offers a responsive, slightly bouncy feel thanks to the combination of latex and micro coils, while still providing good pressure relief.
Support is strong across the board, with the pocket spring system offering reliable spinal alignment and stability. Edge support is solid, and responsiveness is excellent, making it easy to move and change positions during the night.
With eco-friendly materials, strong build quality, and a simple customisation system, the Ecosa Pure Mattress is a well-rounded option. It’s particularly suited to sleepers wanting a more sustainable mattress with a responsive feel and easy firmness adjustment.
10. Ausbeds Cloud Mattress
$2,950 (Queen)
The Ausbeds Cloud Mattress is an Australian-made innerspring mattress that takes a more hands-on approach to customisation. It features a layered design that includes natural latex, dual microspring layers, and a pocket spring support system, resulting in a soft yet responsive overall feel.
What sets the Cloud apart is the way it is constructed and adjusted. Rather than simply flipping a layer, the mattress is made up of separate internal components that can be arranged and configured to suit your needs. Firmness is also guided by body weight, which is a slightly different approach compared to most other mattresses.
In our hands-on testing, the mattress delivered a soft, pressure-relieving feel with a lively, responsive surface. The combination of latex and microsprings creates a buoyant sleep experience, while still maintaining good underlying support and spinal alignment.
This level of adjustability does come with a slightly more involved setup process, particularly for those outside major metro areas where self-assembly is required. The internal layers can be heavy and require some care when positioning, but the design does allow for ongoing adjustments over time.
With Australian manufacturing, a 7-month trial, and a unique approach to customisation, the Ausbeds Cloud Mattress offers something different in this category. It’s best suited to sleepers who enjoy a softer, more luxurious feel and don’t mind a more hands-on setup.
Additional info – customisable mattresses
The best customisable mattresses can vary in how they adjust and how practical they are to use. Below are a few key points to keep in mind when comparing different options.
Different types of customisation
Not all customisable mattresses work in the same way.
Some mattresses use a simple flippable design, where you can flip a comfort layer or the entire mattress to switch between two firmness levels. These are typically the easiest to use and don’t require any additional parts.
Other mattresses use internal layers or inserts that can be rearranged or replaced. In some cases, you may need to contact the company to request additional foam layers or components during the trial period. This offers a higher level of flexibility, but involves a little more ‘admin’ work.
As mentioned above, the Sleeping Duck Mattress allows you to adjust different sections of the mattress, giving you more targeted support across areas such as the shoulders, hips, or lower back.
Split firmness for couples
One of the biggest advantages of a customisable mattress is the ability to choose different firmness levels on each side.
Some products (such as the Atlantis S1 Mattress) offer a half-half configuration, allowing each partner to select their preferred feel. This can be especially useful for couples with different body weights or sleeping positions.
Ease of adjustment
While customisation is a great feature, it’s important to consider how easy it is to use in practice.
Flipping layers or rearranging components can sometimes be a bit cumbersome, particularly with heavier mattresses. In most cases, we recommend having two people available to carry out any adjustments safely and correctly.
Edge support considerations
In some cases, customisable designs can slightly affect edge support, particularly if the internal layers are not well contained.
That said, this isn’t always an issue. Some mattresses – such as the Sleeping Duck Mattress and Onebed Max Mattress – maintain very good edge support thanks to reinforced perimeter designs. It’s simply something to be aware of when comparing different models.
Trial periods
All of the customisable mattresses listed above come with trial periods, which adds an extra layer of reassurance when purchasing.
A trial period allows you to return the mattress for a refund if you’re not satisfied, even after testing the different firmness configurations available.
When combined with the customisation features, this provides a high level of after-sales security. It gives you the flexibility to experiment with different feels and ensures you’re not locked into a mattress that doesn’t suit your comfort preferences.
Subtle differences in firmness
It’s also worth noting that in our experience, the differences between firmness settings are not always dramatic.
While customisation certainly provides useful flexibility, the changes in feel are often quite subtle rather than extreme. In many cases, it may take some time to determine which configuration suits you best.
Nevertheless, having the option to adjust the mattress still offers clear advantages and can help fine-tune comfort over time. Our list of the best customisable mattresses highlights just how far mattress design has evolved in recent years.
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