๐ฆ๐บ Australia ยท Hybrid (foam & springs) vs Memory foam
Sleeping DuckvsErgoflex
Which one is best for you? Sleeping Duck or Ergoflex - 2026 comparison by Vs Mattress
Vs Mattress is reader-supported, that means if you buy something via a link on this page, we might earn a commission. Thank you kindly.
Pricing by size
Sleeping Duck
Ergoflex
Essential information
| Sleeping Duck | Ergoflex | |
|---|---|---|
| Type | Hybrid (foam & springs) | Memory foam |
| Launched | 2014 | 2010 |
| Brand | Sleeping Duck | Ergoflex |
| Made in | China | China |
| Unique points | The Sleeping Duck now called the SD Mach II is Australian designed but produced in China. It combines a combination of technologies in the one mattress:
| The longest running mattress in a box, mattress in Australia, the Ergoflex 5G comprises of 3 layers:
|
| Video | Sleeping Duck Review - Which Version Should You Pick? | Ergoflexยฎ 5G Mattress vs 9 Tonne Tractor - Extreme Test |
Certifications & trial
| Sleeping Duck | Ergoflex | |
|---|---|---|
| OEKO-TEXยฎ | No | Yes |
| CertiPUR-USยฎ | No | Yes |
| Certifications | GECA (Good Environmental Choice Australia) | CertiPur-USยฎ, OEKO-TEXยฎ |
| Other certification info | GECA (Good Environmental Choice Australia) Certified | โ |
| Sleep trial | 100 nights | 30 nights |
| Warranty | 10 | 10 |
| Free shipping | โ | โ |
| Free returns | Yes | Yes |
| Pay later | Yes | Yes |
| Delivery info | Free next business day for almost all of Australia. Delivered straight to your door. | We offer free next day delivery to Brisbane, Canberra, Melbourne and Sydney and express delivery Australia wide. We also offer after hours and weekend deliveries. Every Ergoflex is delivered right to your door in a beautifully compact box. We were the first to deliver our mattresses this way, and like all excellent ideas it's now an industry standard. |
Firmness & feel
| Sleeping Duck | Ergoflex | |
|---|---|---|
| One firmness fits all | No | Yes |
| Select your firmness | Yes | No |
| Adjustable firmness | Yes | No |
| Half and half firmness | Yes | No |
| Flippable / reversible | No | No |
| Firmness info | Firmness is the most sensitive and personal element of any mattress. Sleeping Duck have re-engineered the traditional mattress to make it modular, allowing you to pick (and even swap) the firmness that's exactly right for you. Simply choose between medium or firm initially. Rest assured, you'll be able to change the firmness via foam swaps for the first 100 nights for free. Medium: Suitable for side sleepers, Sinks in slightly while being supportive, Approximately a 6/10 on the firmness scale. Firm: Suitable for back sleepers, Still feels cloud like while maintaining a strong level of support, Approximately an 8/10 on the firmness scale. Half Medium & Half Firm:, A different firmness on either side of the bed, Ideal for couples who have different firmness preferences. | The Ergoflex mattress is a result of over a decade of research and development. This one 'perfect' mattress is rated medium-firm and is optimised with the highest-quality materials available, and has thousands of 5-star reviews from customers in Australia, the UK, and all over the globe. |
Construction & materials
| Sleeping Duck | Ergoflex | |
|---|---|---|
| Layers | AntiGravity foam, Precision Firmness Pads, Motherboard (pocket springs) | Viscoelastic Memory Foam, Cool-Sleepโข Airflow System, Support Foam |
| Cover | Bamboo | Tencel |
| Machine-washable cover | No | Yes |
| Ergonomic handles | Yes | No |
| Comfort | Appreciating that everyone is different, Sleeping Duck allows you to choose from a medium or firm mattress (or half-half on Queen and King sizes). Over the course of your 100 night trial you can change the firmness of your mattress depending on the way you are sleeping. These firmnesses can be adjusted with just the pull of a zip. The ComponentAdapt customisation system empowers you to take full control of the comfort of your mattress. This is achieved via interchangeable Precision Pads that you can swap out for both you and your partner. After sleeping on your mattress, you can contact the SDHQ who can help you to customise and adapt the mattress with up to 256 combinations possible. | Ergoflex comparable only to TEMPURยฎ is technically more advanced and superior in performance to every alternative both in this price range and beyond. As a result it is renowned for delivering deep restorative sleep. It is recommended by Practioners for those that suffer from back pain, fibromyalgia, circulation problems and joint complaints or to those simply in need of a good night's sleep. The Ergoflex 5G consists of an unrivalled 9cms of open-cell 85kg/mยณ high-density memory foam. Our unique Cool-Sleep airflow system encourages air to freely circulate thorough the mattress keeping you cool while you sleep. Our base layer provides perfectly weighted support for the upper layers and longevity of mattress performance. |
| Support | The Sleeping Duck Mach II has a multi-zone support structure to make sure every part of your body is wonderfully supported and comfortable. Pocket Springs are far more resilient and provide better support over a longer period of time. They're specifically designed to ease the human body to relaxation and relieve pressure points by varying the distribution of weight throughout the entire surface. The mattress has superior edge support thanks to the reinforced spring perimeter through the use of 2.3mm springs on the entire border. This allows you to sleep edge-to-edge, making your Queen size feel like a King, and allowing you to sit or sleep on the edge without the rolling or sliding off feeling. Independently pocketed springs create zero disturbance between you and your sleeping partner. | Our mattress is the only true high density memory foam mattress available. Designed to mould itself to the contours of your body it provides instant comfort, more support and better sleep. This confidence is matched by our customers making repeat purchases for additional mattresses time and time again. Our class-leading zero disturbance technology has been a distinctive feature for over 10 years. Promoting deeper, more restful sleep it reduces the likelihood of being woken by a restless sleeping partner. Indeed our ten-year guarantee is underpinned with confidence of a decade of success. Unlike other brands we know our mattresses stand up to our warranty claims - as we have done it in real life for over a decade. |
| Posts | โ | โ |
Size & weight
| Sleeping Duck | Ergoflex | |
|---|---|---|
| Available sizes | Single, King Single, Double, Queen, King | Single, King Single, Double, Queen, King |
| Dimensions | Single: 31 cm | Single: 23 cm |
| Single weight (kg) | 30 | 24 |
| King Single weight (kg) | 36 | 28 |
| Double weight (kg) | 43 | 37 |
| Queen weight (kg) | 53 | 39 |
| King weight (kg) | 60 | 41 |
FAQs
Sleeping Duck
Where is Sleeping Duck mattress made?
Sleeping Duck mattresses are assembled in China, with materials sourced from multiple locations. The foam components of the mattress are produced in Sydney, Australia, while the springs and upholstery layers are manufactured in China. Thus, while some aspects of production take place in Australia, the final assembly occurs in China. To then be shipped back to Aus for sale.
Who is the founder of Sleeping Duck?
Sleeping Duck was founded by engineers Winston Wijeyeratne and Selvam Sinnappan in 2014. Based in Melbourne, they were motivated to create their own bed after finding the existing process of buying a bed to be expensive, complicated, and frustrating. Selvam Sinnappan currently serves as a Founder and Director of the company. Their mission was to simplify the mattress buying process and provide high-quality, tailored sleep experiences to their customers.
Is Sleeping Duck non toxic?
Yes, Sleeping Duck mattresses are non-toxic. The company ensures this by using foams that hold the highest Global Green Tag certification, a certification system that guarantees products are environmentally sustainable and non-toxic. While the mattresses might have a smell when first unboxed, this is normal and non-toxic. However, it's important to note that the AntiGravity Foam used in the mattresses cannot be washed as it begins to disintegrate when exposed to water. If needed, the company recommends replacing this layer.
Ergoflex
Where is Ergoflex made?
The Ergoflex mattress is designed in Australia but manufactured in state-of-the-art facilities located in China. Ergoflex aims to offer a quality product comparable to Tempur mattresses, but at a more affordable price point. The manufacturing process takes place in China, utilizing advanced facilities to ensure the production of high-quality mattresses.
Is Ergoflex a firm mattress?
The Ergoflex mattress is considered medium to firm in terms of comfort, providing a firmer sleeping surface compared to Tempur mattresses, which are generally categorized as medium in terms of firmness. This makes the Ergoflex mattress a suitable choice for back sleepers and heavier-weight side sleepers who typically prefer firmer mattresses for better support. It is important to note that firmness preferences can vary based on individual body weight and personal comfort preferences. Heavier individuals often find firmer mattresses more comfortable and supportive, while lighter sleepers may prefer softer to medium firm options. Density is not directly correlated with firmness, so the "High Density" label does not necessarily indicate a firm foam in the Ergoflex mattress.
What density is Ergoflex?
The Ergoflex mattress utilizes a luxury 5G high-density memory foam layer that is 9cm deep. This high-density foam layer contributes to the overall comfort and support of the mattress. The specific density measurement of the foam is not provided in the available information, but the use of high-density memory foam suggests a foam material that is denser and more durable.
Thank you for checking out this Sleeping Duck vs Ergoflex mattress comparison. We have tried to compare all the necessary information to help you choose which mattress is the most suitable for you.
Related comparisons
- Emma Zero Gravity vs Sleeping Duck
- Sealy Posturepedic vs Sleeping Duck
- Emma Comfort Premium vs Sleeping Duck
- Newentor Hybrid vs Sleeping Duck
- Newentor vs Sleeping Duck
- Essential vs Sleeping Duck
- Premiere vs Sleeping Duck
- Signature vs Sleeping Duck
- Emma Zero Gravity vs Ergoflex
- Sealy Posturepedic vs Ergoflex
- Emma Comfort Premium vs Ergoflex
- Newentor Hybrid vs Ergoflex
- Newentor vs Ergoflex
- Essential vs Ergoflex
- Premiere vs Ergoflex
- Signature vs Ergoflex



