๐Ÿ‡ฆ๐Ÿ‡บ Australia ยท Foam vs Hybrid (foam & springs)

Koala Calm AsvsSleeping Duck

Which one is best for you? Koala Calm As or Sleeping Duck - 2026 comparison by Vs Mattress

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Koala Calm AsSleeping DuckCheck current deal.
Koala Calm As logoKoala Calm As

Koala Calm As

by Koala ยท Foam

10 ยท 120-night trial

Sleeping Duck logoSleeping Duck

Sleeping Duck

by Sleeping Duck ยท Hybrid (foam & springs)

Check current deal.

10 ยท 100-night trial

Pricing by size

Koala Calm As

Single$1,000
King Single$1,200
Double$1,500
Queen$1,700
King$2,000

Sleeping Duck

Single$999
King Single$1,099
Double$1,349
Queen$1,649
King$1,999

Essential information

Koala Calm AsSleeping Duck
TypeFoamHybrid (foam & springs)
Launched2022 (brand 2015)2014
BrandKoalaSleeping Duck
Made inChinaChina
Unique points

3 zones of support and easily customisable firmness levels, you can be rest assured the Koala Calm As Mattress hits the spot every single night.

  • COOLMAXยฎ Sleep Surface Technology
  • Flippable Kloudcellโ„ข Comfort
  • ZoneOut Transition Layer
  • NoPressure Adaptive Core
  • StayPut Edge Support

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:

  • Australian made AntiGravity surface foam (made from high density AirGrown polyurethane foam)
  • Australian made Precision Firmness Pads
  • The Motherboard: a multi-zoned steel spring system
VideoThe Koala Mattress | Calm As | Koala AUSleeping Duck Review - Which Version Should You Pick?

Certifications & trial

Koala Calm AsSleeping Duck
OEKO-TEXยฎNoNo
CertiPUR-USยฎYesNo
CertificationsCertiPur-USยฎ, GECA (Good Environmental Choice Australia), B Corpโ„ข , 1% For The PlanetGECA (Good Environmental Choice Australia)
Other certification infoโ€“GECA (Good Environmental Choice Australia) Certified
Sleep trial120 nights100 nights
Warranty1010
Free shippingโ€“โ€“
Free returnsYesYes
Pay laterYesYes
Delivery info

We offer free 4 hour delivery in Sydney, Melbourne, Brisbane, Perth and Adelaide. Everywhere else, delivery is still fast and free.

Free next business day for almost all of Australia. Delivered straight to your door.

Firmness & feel

Koala Calm AsSleeping Duck
One firmness fits allNoNo
Select your firmnessNoYes
Adjustable firmnessYesYes
Half and half firmnessNoYes
Flippable / reversibleYesNo
Firmness info

The Koala Calm As mattress has a double-sided comfort layer that you access by unzipping the cover, and flip this layer over. You can choose between medium-firm support and firmer support. Koala recommend trying the medium-firm default side first. The Calm As mattress is the firmest, the Koala in the middle, and the Soul Mate is not quite as firm. The same order applies when using the softer side.

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.

Construction & materials

Koala Calm AsSleeping Duck
LayersFlippable Kloudcellโ„ข Comfort, ZoneOut Transition Layer, NoPressure Adaptive CoreAntiGravity foam, Precision Firmness Pads, Motherboard (pocket springs)
CoverUltra cooling, our 7cm comfort layer made with COOLMAXยฎ fibre has a 1cm quilted cover designed to help cool your body down with permanent moisture-wicking tech, making it easier to fall asleep faster. - 63% Polyester, 37% Polyester (COOLMAXยฎ Fibre)Bamboo
Machine-washable coverNoNo
Ergonomic handlesNoYes
ComfortWhat might feel right to your mate, doesn't feel right to you. That's why we've created our double-sided comfort layer that gives you the choice between medium-firm support and firm support. Just unzip and flip it to find what works for you. Our customisable, double-sided Kloudcellโ„ข comfort layer means you can choose what firmness level works for you. It comes in a medium-firm feel but if youโ€™re on the lookout for something a little firmer, it's as easy as unzipping and flipping the comfort layer.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.
SupportDesigned to take the pressure off, a high-density reactive layer with precision cut support zones helps to provide an ideal foundation for sleeping no matter what position you prefer. Known around our neck of the woods as StayPut Edge Support, but all you need to know about our super stable edges is that the chances of anyone sliding off the bed are slim to none.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.
Posts

Koala's Mission

Koala supports 1% for the Planet, and many other charities, check them here...

[Read more]

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Size & weight

Koala Calm AsSleeping Duck
Available sizesSingle, King Single, Double, Queen, KingSingle, King Single, Double, Queen, King
DimensionsSingle: 29 cmSingle: 31 cm
Single weight (kg)2630
King Single weight (kg)3136
Double weight (kg)3743
Queen weight (kg)4453
King weight (kg)5260

FAQs

Koala Calm As

Is Koala calm as worth it?

The Koala Calm As mattress, known for its comfort, support, and cooling features, is competitively priced and could be a worthwhile choice if it aligns with your sleep preferences and needs. However, individual comfort varies, so consider your personal sleeping habits and any physical conditions before purchasing.

How long will a koala mattress last?

While it's challenging to provide an exact lifespan for the Koala Calm As mattress since it's a relatively new product, we can look at general guidelines and the quality of its construction. Mattresses typically last between 7-10 years, with high-quality ones potentially exceeding this range. The Koala Calm As mattress has been recognized for its quality, receiving the 'Product of the Year' award in the mattress category for 2022 and being CHOICEยฎ recommended. It's a well-constructed product that should provide good durability, but actual lifespan can vary depending on factors such as usage and care. Regular rotation, for instance, can help extend the life of a mattress.

Can the Koala Calm as mattress go on slats?

Yes, the Koala Calm As mattress can be placed on slatted bed frames. However, it's important to ensure that the slats are not too far apart. As a general rule, the gap between slats should be no more than 3 inches (or about 7.6 cm) to provide adequate support and prevent sagging. If the slats are too far apart, it may affect the mattress's support and potentially its lifespan. Always make sure your bed frame is in good condition and provides sufficient support for your mattress.

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.

Wrap up

Thank you for checking out this Koala Calm As vs Sleeping Duck mattress comparison. We have tried to compare all the necessary information to help you choose which mattress is the most suitable for you.

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