A king mattress is technically the best option for couples due to its large size. 

Offering at least eight inches more than a queen mattress, such mattresses provide a lot of space to each person sleeping on it. In fact, sleeping on a king mattress is similar to having your own twin XL bed. 

The extra wiggle room that such mattresses offer ensures that you can sleep comfortably without worrying about disturbing your partner. And the best mattresses, including memory foam and hybrid mattresses from almost all brands are available in king size.

But they may be constructed differently or offer varying features, which is why it is easy to get confused when choosing one. To help you find the best king mattress in Australia, we’ve reviewed the most popular options currently available. 

And not only that, we’ve also answered some of the most commonly asked questions on the topic. So, check them out!

5 Best King Mattresses In Australia [Reviews]

1. Emma Comfort Mattress

When looking for a memory foam mattress, the Emma Comfort mattress is one of the best options worth considering. Featuring high-quality construction that includes a point-elastic Airgocell layer for temperature regulation and an adaptive and supportive HRX foam layer, it is perfect for all types of sleepers. The mattress also features Zero Motion technology which eliminates motion transfer and ensures undisturbed sleep throughout the night.

Other than that, this Emma mattress comes with a washable and removable Fresh Air Comfort Cover that covers the mattress tightly and prevents it from slipping and sliding. It is manufactured using a climate control fibre and has excellent moisture and humidity regulating properties. As for the bottom layer, this comes with handles that allow positioning the mattress as required, and the material allows unrestricted air circulation. The mattress is also Oeko-Tex 100 certified.


The Emma Comfort mattress is an extremely pricey option. 


If you’re looking for a high-quality mattress from a reputed brand that comes with exceptional temperature regulation properties, the Emma Comfort mattress is a great choice. It is perfect for all types of sleepers and comes with a washable cover.  

2. The Koala Mattress

When it comes to Australian mattress brands, Koala is right there at the very top with brands like Emma. And this mattress, with its fantastic features like the flippable comfort layer or Zero Disturbance technology, is extremely popular. The top cover is made of Tencel Lyocell and polyester, ensuring durability. Additionally, the mattress offers adjustable firmness levels, thanks to its flippable comfort layer, allowing you to get the benefits of a soft and firm mattress.

The mattress also comes with 3-zone support technology that provides pressure relief to areas like the hips, shoulders, and feet, and it has a KloudCell foam topper as well. Furthermore, it is great for isolating motion, which means that couples won’t get disturbed by any movements and can enjoy better sleep quality. Finally, there is the antimicrobial protection of the mattress, which keeps it protected against mildew, mould and bacteria.


The Koala Mattress is not the best choice for heavier sleepers. 


Features like 3-zone support and a flippable comfort layer help the Koala mattress stand out from the crowd. But what is most impressive about this mattress in a box is its antimicrobial protection, which ensures that it won’t get damaged easily.

3. The Origin Hybrid Mattress

The Origin hybrid mattress offers the benefits of both a pocket spring mattress and a memory foam one. Manufactured using sustainable wool and bamboo foam, it features the HexaGrid orthopaedic layer of the brand that offers superb comfort levels while also providing relief to all the pressure points. The pillowtop of the mattress is manufactured using premium Tencel fibres that keep the mattress cool so you can sleep comfortably even on the hottest nights.

And the heat dissipation is further enhanced due to the presence of cooling crystals. Being a hybrid mattress, it comes with anti-gravity springs, which offer impressive edge support, eliminating any worries about falling off the bed. As for firmness levels, the mattress offers the perfect balance of comfort and support, making it ideal for different types of sleepers. And its 15-year warranty and 120-night trial make it a fantastic mattress in a box.


The mattress cover of the Origin hybrid mattress cannot be machine washed.


The Origin hybrid mattress, with its HexaGrid technology, can help you stay cool and comfortable while also providing impressive back pain relief. Its sustainable construction and superb edge support also make it a worthy choice.

4. Emma Diamond Hybrid Mattress

Another excellent option from Emma, the Diamond is a hybrid mattress that comes with the patented Emma Diamond Degree technology of the brand. This technology uses diamond and graphite particles as a coating that absorbs heat to help you sleep without feeling any discomfort. There is also a removable and washable cover that ensures breathability and makes this technology more effective, while a graphite foam layer reduces disturbances due to its low rolling resistance.

The top memory foam layer is highly adaptive and adjusts to your sleeping position while distributing pressure uniformly, making it one of the best hybrid mattresses on the market. As for the bottom, this is constructed using HRX foam that provides long-lasting durability. That’s not all; the individually encased steel pocket springs ensure better breathability. Lastly, this mattress comes with a 10-year guarantee and a 100-night trial.


Due to multiple memory foam layers, some sheets may not properly fit this mattress. 


With its Diamond Degree technology that allows outstanding temperature regulation, this mattress is perfect for hot Australian nights. And its high-quality washable cover and durable construction ensure that it is a breathable mattress that does not require much maintenance.

5. Dusk&Dawn Premiere MK2

The next item we reviewed is the Premiere MK2 mattress from Dusk&Dawn, one of the best Australian mattress brands. It comes with a high-quality, comfortable stretch fabric and a 3D mesh gusset that provides a luxurious sleeping surface while ensuring breathability and proper temperature regulation. In addition, the advanced Iso-coil support system minimises disturbances, thereby cradling your body and making it better than a regular memory foam mattress.

One of the best features of this mattress is its Eco-Air layers, which make up the comfort layers and ensure maximum sleeping comfort. Then there is the Elasta Gel technology that helps keep the Premiere MK2 mattress fresh while also providing pressure relief. This makes it perfect for people who experience frequent back pain problems. And the airflow and breathability are further improved, thanks to the Premium Dusk Air technology of the brand.


Being a luxury option, the Dusk&Dawn Premiere MK2 mattress is not very affordable.


The Premiere MK2 mattress offers exceptional comfort and support, thanks to innovative features like the Iso-coil support system, which ensures relief to the pressure points. Similarly, the Eco-Air layers provide a comfortable surface, ensuring a proper night’s sleep. 


1. What Are Some Of The Factors To Consider When Purchasing A King Mattress?

1. Accessibility

One of the first things to consider when buying a king-size mattress is accessibility. The mattresses are most suitable for bedrooms that measure 12 feet by 9 feet and 10 inches. If you get such a mattress for a room with smaller dimensions, it will take up too much space and make it difficult to move about in the room.

Also, according to most interior designers, there should be a gap of at least 30 inches around the bed. King-size mattresses are usually meant for master bedrooms, and if the room is larger than the minimum recommended, the bed can be used as a centrepiece.

2. Mattress Occupants

A king-size mattress is ideal if you have to share the bed with a partner. It is also great if you have a small child or pet who sleeps in the same bed since it provides plenty of room for each occupant to sleep comfortably.

On the other hand, spending on a king mattress might be a bit too much if you do not share the bed with a partner, child or pet. In such instances, going with a smaller option, such as a queen-size mattress, full mattress, or twin XL might be a better choice.

3. Sleeping Needs

Different people have different sleeping habits, which often depend on their body and build. For instance, people over six feet and two inches in height might find the mattress size ideal since it provides adequate space to move about. That said, if two people with such builds have to share the bed, it may be better to go with an even larger mattress.

Similarly, consider the materials that make up the mattress, since each material has its own advantage and disadvantage. Memory foam ones have good contouring capabilities but can get hot, so you may want a mattress with gel memory foam. Alternatively, innerspring mattresses offer better support, while hybrid ones balance both comfort and support.  

4. Bed Frame Size

Beds that are meant for king-size mattresses should be a bit wider than the mattress. Ideally, this extra width should be between three and five inches. But you should also consider the fact that certain types of beds designed for such mattresses can themselves take up a lot of space.

Some examples of these include sleigh beds, solid wooden frame beds, panel bed frames, upholstered beds, storage beds, etc. If the mattress has to be used in a room with limited space, you may need to change the bed as well.

There are several options that can fit such requirements without taking up much space, such as low-profile wooden slat frames, rail frame beds or slimmer metal frame ones.

2. What Are Some Types Of King Size Mattresses You Can Buy?

When looking for the best king mattresses in Australia, there are several options you can check out.

1. Memory Foam Mattresses

If you’re looking for a mattress that can provide good pressure relief, then a memory foam mattress might be the best option. A memory foam mattress can conform to your body shape and relieve the pressure exerted on areas like the hips and shoulders. That is why such mattresses are best for side sleepers or those with back pain.

You can even go for mattresses with gel-infused memory foam, which has good temperature regulation properties and can keep you cool while sleeping.

2. Latex Mattresses

Made from natural or synthetic latex, these mattresses offer a bouncy feel but are firmer than memory foam ones. They are a good choice if you are looking for an environment-friendly option that also has hypoallergenic properties. A mattress with latex foam is most suitable in situations where a memory foam one cannot be used, such as when you want a soft mattress for hot sleepers. 

3. Innerspring Mattresses

A pocket spring mattress is made from pocket springs or steel coils, which provide it with more bounce while also making it firmer. Such traditional mattresses are the complete opposite of memory foam ones, and were more popular earlier, but nowadays, more people opt for a mattress in a box.

A king-sized mattress made from pocket springs is best for stomach and back sleepers since it offers a medium-firm level of firmness. 

4. Hybrid Mattresses

For some people, the best mattress is a hybrid one with a latex or memory foam layer along with pocket springs. Sometimes the manufacturer uses a gel memory foam layer which further enhances the cooling capabilities of such mattresses. While a hybrid mattress can offer a good night’s sleep, it can be a bit expensive.


Now that you know about the best king mattresses that can be purchased, it is time to make a decision. But before that, make sure you make the necessary preparations, such as measuring the room space and the bed for which it is required. This will ensure that there are no hassles involved in installing the new mattress.

If you’re still not sure which option to pick, the Emma Comfort mattress is excellent. Its high-quality construction, Zero Motion technology and Airgocell foam layer all work together to ensure you get a good night’s sleep.