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ComparisonLast updated on 9 July 2025

Koala Plus vs Sleeping Duck vs Ecosa Pure

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

Koala Calm As mattress on Mattress Zone Australia
Sleeping Duck Mach II mattress on Mattress Zone Australia
Ecosa Pure mattress on Mattress Zone Australia
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At a glance

Recommended For
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What we like
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Keep in Mind
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Essential Mattress Info

Brand
KoalaSleeping DuckEcosa (Australia)
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)Hybrid (latex, foam & springs)
Prices
Video
Certifications
CertiPur-US®
CertiPur-US®✕✕
OEKO-TEX®
✕✕OEKO-TEX®

Trial & Warranty

Trial Period
✓✓✓
Trial Period (nights)
120100100
Warranty Length (years)
101015

Firmness Options

One Firmness Fits All?
✕✕✕
Adjustable Firmness
✓✓✓
Half-Half Firmness
✕✓✕
Selectable Firmness
✕✓✕
Flippable / Reversible Firmness
✕✕✕
Firmness Info
The Koala Plus 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 Koala Plus 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.
The Pure Mattress has two interchangeable layers that you can choose from depending on your sleeping style and overall preference for firmness. The mattress will arrive with the medium firmness setting, but easily switch between medium and medium-firm for customisable comfort. Simply unzip the cover, and swap the 1st and 3rd layer of the mattress, keeping the micro coils layer inbetween.

Mattress Construction

Materials Overview
The Koala Plus Mattress offers the choice between medium-firm and firm comfort :
  • 1cm Quilted Plush Cover with COOLMAX® Technology
  • 7cm Flippable Comfort Foam Layers
  • 3 Zone Transition Layer
  • 3 Zone Support Foam Base with StayPut Edge Support
  • Anti-Slip Base.
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.
The Ecosa Pure mattress has 3 layers of latex foam combined micro coils, pocket springs and recycled felt:
  • 3cm BounceTech™ 75D Dunlop Latex Foam (Medium)
  • 2.5cm Micro Coils
  • 3cm Adaptive 90D Talalay Latex Foam (Medium-Firm)
  • 20cm 7 Zone Pocket Springs
  • Recycled Felt
  • 1cm Reinforced Dunlop Latex Foam
  • Removable OceanCycled™ Cover.
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.
Enjoy incomparable comfort and support - and say goodnight to partner disturbance and overheating. Latex takes Ecosa's most advanced mattress to the next level. Natural and sustainable, this luxurious material's properties are second to none. From premium comfort to pain relief, temperature regulation, and allergen control, it provides unparalleled benefits - promoting a quality of sleep you've never experienced before. Proudly carbon neutral. All carbon produced to create and deliver the Pure Mattress is offset via Green Story.
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.
The Ecosa Pure is Ecosa's most luxurious and sustainable mattress that moulds to your body to deliver the sleep of your dreams. It is made from eco-friendly, high-performance materials like natural latex which is harvested from rubber trees to create the perfect amount of support. Generous 20cm springs offer perfect spinal alignment with zoned support for your back, shoulders, and knees.
Comfort Specs
The ultra cooling comfort layer made with COOLMAX® fibre is easy going on your skin, and helps your body feel cool and dry, even on muggy nights.
The ZoneOut Transition Layer is fitted with air tunnels meaning any excess or unwanted heat is efficiently dissipated which helps make for 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.
No Disturbance technology means you can have undisturbed sleep, no matter how much you or your sleeping buddy moves in their sleep. BounceTech™ Latex Foam is an open cell Dunlop Latex which is used for its breathable comfort and medium firmness. Micro Coil Technology allows airflow through the up to 2,000 individual 2.5cm coils.
Support Specs
The Koala Plus mattress has multi-layered zoning. 3 Zone Transition Layer
This foam layer has 3 high density targeted support zones to disperse your weight while providing extra support for your lower back. 3 Zone Support Foam Base
This high-density reactive layer has 3 precision cut support zones is designed to take the pressure off, it offers a firmer support base right beneath the hips that prevents your body from sinking into the mattress. This helps you to maintain a healthy sleeping posture.
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.
Micro coils provide precision support and contouring for pain-free sleeping. Adaptive Talalay Latex for a medium-firm feel and dynamic support. Sleep supported with 7 zones of pocket springs ensuring perfect spinal alignment. Firm pressure supports your lower back and knees, with cushioning for the pressure points in your hips and shoulders. Firmer springs surround the mattress perimeter for reinforced edge support. Recycled Felt is a protective layer for the pocket springs, made from 100% recycled materials. Finally, reinforced latex foam supports the pocket springs.
Fabric Specs
1cm Quilted Plush Cover with COOLMAX® Technology
This quilted cover is designed to help cool your body down by wicking away moisture, keeping you cool and dry, and making it easier to fall asleep faster. The top fabric is 63% Polyester, 37% Polyester (COOLMAX® Fibre). Anti-Slip Base
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.
The Ecosa Pure Mattress cover is OceanCycle certified, meaning up to 80 plastic bottles were collected from the ocean and repurposed into the cover. This cover may be removed and machine washed. Simply zip the top off and pop it in your washing machine.
Manufactured in
ChinaChinaChina

Suitability

Side Sleepers
✓✓✓
Back Sleepers
✓✓✓

Size & Weight

Single
✓✓✕
Single Dimensions
188 x 92 x 29 cm188 x 92 x 31 cm✕
Single Weight (kg)
2630✕
King Single
✓✓✕
King Single Dimensions
203 x 107 x 29 cm203 x 107 x 31 cm✕
King Single Weight (kg)
3136✕
Double
✓✓✕
Double Dimensions
188 x 138 x 29 cm188 x 138 x 31 cm✕
Double Weight (kg)
3743✕
Queen
✓✓✓
Queen Dimensions
203 x 153 x 29 cm203 x 153 x 31 cm203 x 153 x 29 cm
Queen Weight (kg)
445269
King
✓✓✓
King Dimensions
203 x 183 x 29 cm203 x 183 x 31 cm203 x 183 x 29 cm
King Weight (kg)
526579
California King
✕✓✕
California King Dimensions
✕203 x 203 x 31 cm✕
California King Weight (kg)
✕74✕

Delivery

Delivery Cost
FREEFREEFREE
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.
Free shipping and free returns in Australia. Free next day delivery in metro Melbourne, Sydney, Brisbane, Perth and Adelaide.
Prices
Latest Promotions

Check back later for future savings

Shop now

Independence Day Sale - ends Sunday - $200 off all stock. Code: 4JULY2025

See offer

Ecosa 10th Birthday Sale - Take 25% Off Sitewide. Offer ends 27/07/2025.

See Ecosa website