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comparisonLast updated on 14 January 2025

Koala Soul Mate vs Sleeping Duck

Easily compare the Sleeping Duck vs Koala Soul Mate Mattresses side-by-side.

Koala Soul Mate mattress on Mattress Zone Australia
Sleeping Duck Mach II mattress on Mattress Zone Australia
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At a glance

Recommended For
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Essential Mattress Info

Brand
KoalaSleeping Duck
About
  • B-Corp Certified
  • Official WWF Partner - Adopt A Koala
  • 1% for the Planet
Unlike most mattresses, Sleeping Duck Mach II is not one size fits all as you can customise each mattress side.
Mattress Type
All FoamHybrid (foam & springs)
Prices
Video
Certifications
CertiPur-US®
CertiPur-US®✕

Trial & Warranty

Trial Period
✓✓
Trial Period (nights)
120100
Warranty Length (years)
1010

Firmness Options

One Firmness Fits All?
✕✕
Adjustable Firmness
✓✓
Half-Half Firmness
✕✓
Selectable Firmness
✕✓
Flippable / Reversible Firmness
✕✕
Firmness Info
Designed with a 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.
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.

Mattress Construction

Materials Overview
The New Koala Soul Mate Mattress has four layers:
  • 2cm Quilted Plush Cover
  • 9cm Flippable Kloudcell™ Comfort with Sensapole® Sleep Surface
  • Bamboo Charcoal Memory Foam
  • 5 Zoned Adaptive Foam Springs and StayPut Edge Support.
The Sleeping Duck is made for sleepers who want the best of old and new. The Sleeping Duck is Australian designed and combines a combination of technologies in the one mattress:
  • Australian made AntiGravity surface foam (made from high density AirGrown polyurethane foam)
  • Australian made Precision Firmess Pads (made from high density AirGrown polyurethane foam)
  • The Motherboard: a multi-zoned steel spring system
These elements create a highly comfortable, breathable and supportive mattress on both the lumbar and neck.
This award-winning, GECA certified mattress is loved by their customers.
Comfort Info
No more tossing and turning, as Koala mattresses have a Zero-disturbance® layer meaning you'll sleep soundly no matter who you sleep next to. It's like sleeping in separate beds, without giving up the cuddles.
All Koala mattresses come with an anti-bacterial treatment to help keep dust-mites and other nasties away.
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.
Support Info
StayPut Edge Support is effectively a firmer foam perimeter that creates super stable edges so that you can sit or lie right on the edge of the mattress without falling off.
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.
Comfort Specs
Bamboo charcoal memory foam with nifty ventilation holes is used in the transition layer for its naturally antimicrobial properties and to promote airflow through these perforations.
The foam springs furthre allow airflow in all the right areas to help give you a cooler night's sleep.
AntiGravity Foam
The top layer was engineered in pursuit of the ultimate comfort. The foam which doesn't contain any latex or memory foam offers superior comfort and cushioning. It actually improves on the combination and provides increased pressure relief, buoyancy and breathability. The hyper-adaptable properties of the AntiGravity foam allows it to rapidly reshape around you as you move, allowing unimpeded movement, not achievable with the more rigid moulding that memory foam provides. It is produced via pressure expansion rather than chemical reactions which means it is 8x more open than latex and memory foam. Furthermore, it's all Australian made.
The use of the pocketed springs allows for far superior air circulation and ventilation than all-foam mattresses. This helps to keep your mattress cooler and drier.
Support Specs
Designed to work with your body, not against it, the 5 Zoned Adaptive Foam Springs are crafted to react to your body's slightest movements. Each spring offers tailored support without compromising Koala's famous Zero Disturbance® technology. 5 zones offers variable support across your whole body, including your head, shoulders, lower back, thighs and feet to help relieve pressure and give you a great night's sleep.
Bamboo charcoal memory foam in the layer above further relieves pressure.
The combination of the changeable, high-density foam layer and the individually-wrapped pocketed spring multi-zone support layer, creates a system that is highly responsive to your needs.
The multi-zone spring system has three types of springs that are specifically engineered - 2.3mm springs around the very edge, 2.0mm springs through your back and hip zones and 1.8mm springs through your shoulder zone. The shoulder and hip zones conform whilst more support is provided to the lower back and head zones, therefore giving you the required alignment for a restorative night's sleep.
The use of these Twice Tempered IndestructSprings is not just for their ductility, strength and durability properties but to provide comfort and support through proper spinal alignment.
Fabric Specs
The Sensapole® sleep surface (62% Polyester, 38% Viscose Phase Change Material) will help keep you at the right temperature all year round.
The anti-slip base fabric is 100% Polyester with PVC dot which helps keep your mattress securely in place.
BreatheTech Cover
The vortex spun bamboo yarn top cover is designed for maximum breathability and ease of switching foam layers. Soft and silky to touch, it also has natural anti-microbial properties that keep it fresher for longer. The cover easily unzips and is machine washable. Plus no annoying buttons that you feel with tufted mattresses. This high performance bamboo yarn is knitted to ensure optimal breathability for air and liquid, to ensure it remains dry and cool.
Manufactured in
ChinaChina

Suitability

Side Sleepers
✓✓
Back Sleepers
✓✓

Size & Weight

Double
✓✓
Double Dimensions
188 x 138 x 33 cm188 x 138 x 31 cm
Double Weight (kg)
4443
Queen
✓✓
Queen Dimensions
203 x 153 x 33 cm203 x 153 x 31 cm
Queen Weight (kg)
5052
King
✓✓
King Dimensions
203 x 183 x 33 cm203 x 183 x 31 cm
King Weight (kg)
5965
Single
✕✓
Single Dimensions
✕188 x 92 x 31 cm
Single Weight (kg)
✕30
King Single
✕✓
King Single Dimensions
✕203 x 107 x 31 cm
King Single Weight (kg)
✕36
California King
✕✓
California King Dimensions
✕203 x 203 x 31 cm
California King Weight (kg)
✕74

Delivery

Delivery Cost
FREEFREE
Delivery Info
Same day delivery on furniture and mattress orders in Sydney, Melbourne, Brisbane, Perth and Adelaide. Delivery is FREE on mattress and small items and Koala's fast and flexible furniture delivery lets you choose a window that suits you.
Free next business day for almost all of Australia or choose your preferred delivery date and time. Delivered straight to your door.
Prices
Latest Promotions

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