King mattresses

The Koala Mattress Range has been thoughtfully designed, with options for every kind of sleeper and budget.

Looking for medium-firm or firm support, with the flexibility to adjust the firmness to your liking or to accommodate different preferences for you and your partner? The Koala Mattress might be the way to go. It's Australia's #1 rated mattress for a reason, combining 7cm of Kloudcell® comfort with the firmness adjustability to suit your unique sleeping style.

If you want to step up your sleep comfort, take a look at the Koala Plus Mattress. It features a generous 8cm of Cooling Kloudcell® and five targeted high-density support zones designed to support your body exactly where it needs it. As our most advanced cooling mattress, it's packed with top-notch cooling tech and a double-sided topper that you can flip depending on the season, making sure you're comfortable no matter the weather.

For those of you who want to treat yourselves to life-changing sleep, check out the Koala Luxe Mattress. It's our plushest mattress yet, with a 9cm Kloudcell® Comfort Layer infused with copper that provides unparalleled pressure relief, while the copper keeps you cool and fresh throughout the night. It's also packed with seven targeted high-density support zones for the best curve-cradling sleep you've ever had. We've added a touch of luxury with sumptuously soft Australian cashmere and linen-blended boucle to ensure you sleep in serene comfort.

Each mattress in our lineup is all about giving you the best sleep possible. Whether you need adaptable support, advanced comfort features, or just want to feel like you’re sleeping on a cloud, Koala has something perfect for you, ensuring every night is a great night.

Still on the fence? Check out our mattress comparison table here or take our quiz here.

Firmness preferences for mattresses often vary depending on the sleeper's preferred position. Back sleepers generally benefit from firmer mattresses that help maintain spinal alignment, whereas side sleepers might prefer softer mattresses that provide cushioning for pressure points such as shoulders and hips. Stomach sleepers, on the other hand, may find that firm mattresses prevent spinal stress and enhance overall support.

The Koala Mattress and Koala Plus Mattress are designed with versatility in mind, featuring a flippable comfort layer that allows sleepers — whether they prefer lying on their front, side, or back—to choose between medium-firm and firm comfort levels at home. Additionally, the Koala Luxe Mattress offers the option to include a half-and-half comfort layer, catering to couples with differing firmness preferences and sleeping positions.

For those in search of extra plushness, our Koala Luxe Mattress is the most luxurious option in our range. It also boasts seven targeted high-density support zones for unparalleled curve-cradling comfort.

We’ve spent 9 years engineering our unique Kloudcell® technology to strike the perfect balance between softness and support, ensuring pressure relief in any sleep position. For back and stomach sleepers, Kloudcell® gently supports broad surfaces without the "sinking feeling" often associated with memory foams. For side sleepers, it offers gentle pressure relief by cushioning the shoulders, hips, and legs, ensuring a restful night's sleep.

If you prefer a firmer sleeping surface, the Koala Mattress or the Koala Plus Mattress with Flippable Firmness might be perfect for you. Just flip the comfort layer to easily switch between 'medium-firm' and 'firm' surfaces, tailoring the feel to your exact preference. Additionally, the Koala Mattress offers a Partner Preference option, allowing couples with different firmness preferences to enjoy personalised comfort on their side of the bed.

If luxurious plush comfort is your thing, check out the Koala Luxe Mattress. It's our plushest mattress yet, with a 9cm Kloudcell® Comfort Layer infused with copper that provides unparalleled pressure relief, while the copper keeps you cool and fresh throughout the night. It's also packed with seven targeted high-density support zones for the best curve-cradling sleep you've ever had. We've added a touch of luxury with sumptuously soft Australian cashmere and linen-blended boucle to ensure you sleep in serene comfort.

Every Koala Mattress is designed with a sophisticated base of ergonomic support zones, each tailored to contour the body's natural curves and promote healthier spinal alignment for life changing sleep. The SE Mattress and Koala Mattress both feature three high-density targeted support zones positioned under the torso, hips, and legs to offer enhanced support where it's most beneficial. The Koala Plus Mattress improves on this with five targeted zones, providing an elevated level of support and comfort. Our most advanced mattress - the Koala Luxe Mattress introduces seven precision-cut support zones, aimed at optimising spinal alignment for various sleeping positions. This tiered system of support ensures that each sleeper can find their ideal comfort and support level, catering specifically to their body's individual requirements for a restful sleep.

With our custom designed CoolThread™ tech, Cooling Kloudcell®, and a reversible seasonal topper that lets you choose between cool and cosy, the Koala Plus Mattress has been engineered to keep you at the optimum sleeping temperature all year round.

All Koala Mattresses are made to standard Australian sizes, ensuring a perfect fit for standard bed frames:

- Single: 188 x 92cm
- King Single: 203 x 107cm
- Double: 188 x 138cm
- Queen: 203 x 153cm
- King: 203 x 183cm

The height of your new mattress varies depending on the model you select. Here's a quick guide:

Joey Kids Mattress: 15 cm
SE Mattress: 24 cm
Koala Mattress: 25 cm
Koala Plus Mattress: 28 cm
Koala Luxe Mattress: 31 cm

When shopping for Bed linen and Mattress Protectors , ensure they are compatible with the height of your mattress. Our TENCEL™ Bed Linen and Great Barrier Mattress Protector are also available in 'Deep Fit' sizes, ideal for accommodating the taller Koala Luxe Mattress and ensuring a snug, secure fit.

Kloudcell® is what quality sleep is made of. With its superior support, breathability, responsiveness and durability, Kloudcell® is the closest experience to floating on a cloud that you can have.

Every Koala Mattress uses Kloudcell® technology in the comfort layer, but the Koala Mattress and Koala Plus Mattress models also feature Flippable Firmness, so you can choose between medium-firm and firm Kloudcell® at home. Couples with different firmness preferences can add a Partner Preference comfort layer to their Koala Mattress, featuring half medium-firm and half firm Kloudcell®. For the plushest comfort, the Koala Luxe Mattress features 3cm of Kloudcell® quilting, and has 50% more Kloudcell® than the SE Mattress.

As Australia’s most awarded mattress range with over 50,000 five-star reviews, falling asleep faster and staying asleep longer is as good as a sure thing. Learn more.

Sleeping next to a tosser? Our famous Zero Disturbance® technology has been designed to absorb movement, ensuring you remain undisturbed when your partner tosses and turns during the night. You'll find Zero Disturbance® technology in all of our mattresses.

Koala Mattresses are compressed, rolled, and vacuum-sealed into a compact box for quick and easy delivery directly to your doorstep. Once opened, it can take 3-5 days for the mattress to come back to its correct shape and feel, but you can sleep on it right away. It will just get better and better over the first week or so!

In selected areas of Sydney and Melbourne we've partnered with Soft Landing, a mattress recycling social enterprise, to remove and recycle your old mattress for a reasonable fee!

Once you've ordered your Mattress, we'll send you the details via email for you to book your mattress pick up through Soft Landing!

For those outside of these selected areas, you can check out Planet Ark's mattress directory to find alternative recycling and reuse services in your area!

At Koala, we're committed to making a positive impact on the environment through thoughtful actions and genuine sustainability efforts.

Koala Mattresses feature foams certified by CertiPUR-US®, meaning they are made without ozone depleters and heavy metals, whilst promoting indoor air quality through low Volatile Organic Compounds (VOCs). We also integrate materials like carbon-zero TENCEL™, derived from sustainable wood sources, and recycled fibers, with the aim to reduce our footprint and promote the use of sustainable resources.

In addition to choosing thoughtful materials, we actively support environmental conservation by partnering with WWF and participating in the 1% for the Planet initiative. This means a portion of every mattress sale is invested in projects that aim to protect our planet's natural habitats and biodiversity.

Our approach to sustainability is about taking concrete steps to minimise our environmental impact, while supporting global efforts to preserve the planet for future generations.

Koala Mattresses only use foam that has been CertiPUR-US® certified, meaning it has been tested to meet CertiPUR-US®' rigorous standards for emissions, content, performance, and durability. The foam in our mattresses is made without heavy metals such lead or mercury, there are no harmful phthalates present, and they are made without the use of ozone-depleting substances including methylene chloride and other CFCs. Koala Mattress foam has also been tested to have low VOC (Volatile Organic Compound) emissions for indoor air quality (less than 0.5 parts per million).

As long as your bed base has adequate support and ventilation, it'll work with any Koala Mattress. If it's a slat base, the slats should be no more than 7.5cm apart. While posture slats can be used, they can make the mattress feel considerably softer than it actually is, so for the best comfort we recommend that they are straight (flat) slats.

We don't recommend either using the mattress straight on the floor without ventilation underneath as this can lead to moisture build up, or on an adjustable bed as bending or folding the mattress might cause long-term damage to the core or supportive layers.

If you need to buy a new base you can check out our bed bases. They're beautiful, strong and easy to assemble!