Good news for bad backs: The best mattress for back pain in Australia

Waking up with a sore back is optional. Here's how to find a mattress that truly helps.

Back pain isn’t just uncomfortable; it can be debilitating. If you’re waking up feeling stiff, sore, or like you’ve barely rested, your mattress might be part of the problem. 

It’s worth asking yourself a few things: how old is your mattress? Is your back pain at its worst when you wake up? Are you tossing and turning all night trying to get comfy? Or are you noticing dips or sagging in your mattress where you sleep? 

Finding the best mattress for back pain in Australia comes down to a few key factors: spinal alignment, pressure relief and firmness. Your sleep position matters too; what works for a side sleeper might not work for someone who sleeps on their back. 

In this 2026 guide, we’ll unpack the connection between your mattress and back pain, what actually makes a mattress ‘good’ for your back and how to choose one that works for your body. Let’s dive in!

Table of Contents 

The link between back pain and your mattress

You spend up to a third of your life in bed, so it’s no surprise that your mattress has a huge impact on how well you sleep [1]. And more importantly, how your body feels when you wake up.

The wrong mattress can do more than just disrupt your sleep. It can trigger back pain or make existing aches even worse, particularly if it’s not providing the right level of support or alignment. Over time, poor support can place extra strain on your spine, which means you’re not fully recovering overnight. 

The good news? The right mattress can do the opposite, supporting your spine and working to reduce pain while you sleep. 

Signs your mattress might be causing back pain

There are a few telltale signs that your mattress might be working against your back, not for it. 

Here’s what to keep an eye on.

  • You wake up stiff or sore, but the pain eases as the day goes on

  • Your mattress is more than 10 years old

  • There are visible sags or lumps where you sleep

  • You’re constantly tossing and turning, trying to get comfortable

  • You wake up multiple times throughout the night

  • You sleep better and wake up pain-free when you sleep in a different bed (even that random hotel mattress feels like an upgrade)

If a few of these sound familiar, your mattress could be a key contributor to your back pain.

That said, even if your mattress seems like the culprit, it’s still important to check in with your GP or healthcare provider, especially if your pain sticks around during the day or gets worse over time.

What makes a good mattress?

A good mattress isn’t just about comfort; it’s about supporting your body the right way. One of the most important features? Spinal alignment.

Your mattress should cradle your body while keeping your spine in a neutral position, so your back isn’t arching or sinking in awkward ways overnight. Proper alignment helps reduce pressure on your muscles and joints, letting your body recover while you sleep.

What type of mattress is best for back pain?

Most experts point to a medium-firm mattress as the sweet spot here. A 2015 study found that medium-firm mattresses were especially helpful for people with chronic non-specific low back pain [2]. Not only were they rated more comfortable than softer beds, but they also improved sleep quality by 55% and reduced back pain by 48%.

Why medium-firm works: it offers enough support to keep your spine aligned while still contouring to your lumbar region, striking a balance that’s harder to achieve with mattresses that are too soft or rock-hard.

The Plus Mattress gives you the freedom to choose between a medium and medium-firm feel and switching between them couldn't be simpler. Just unzip the cover and flip the internal foam layer to find the comfort level that suits you best. 

If you've always slept on softer mattresses but are curious about a firmer feel, the Plus lets you start where you're comfortable and make the change when you feel ready.

What to look for in a mattress

When it comes to choosing your next mattress, a few key factors can make all the difference.

Spinal support

Of everything to consider when choosing a mattress, spinal support is the most important. Your spine is precious and you need to cradle it as such. 

As we touched on earlier, a medium-firm feel is regarded as the best option for achieving this, particularly for those who deal with non-specific low back pain. Research backs this up, showing that medium-firm mattresses can improve sleep quality and lower the risk of developing pesky low back pain [3]. 

The position you sleep in also has a direct impact on spinal curvature and when the spine falls out of alignment night after night, it can contribute to a range of musculoskeletal issues [4]. That’s why a mattress that takes spinal alignment seriously is an investment that your back will thank you for. 

The Plus Mattress contains Kloudcell®, our signature comfort foam, which provides consistent support beneath broader areas of the body like the back and hips. This helps keep you comfy and properly aligned, regardless of how you sleep. 

Its structure is also engineered to relieve pressure at the shoulders, hips and knees, without the sinking or sagging feeling that is often associated with traditional memory foam. 

Pressure relief

Coming in close second is pressure relief. A good mattress should distribute your body weight evenly across its surface, taking the load off the areas that tend to bear the brunt of it most, like your shoulders, hips and back. 

At Koala, we take pressure relief super seriously. The Plus Mattress features advanced ergonomic support through a five zone support core, which contours to the natural curves of your body and respond to where you need it most. Our Kloudcell® foam gently cushions the body’s key pressure points, giving your muscles and joints the chance to properly rest and recover. 

Motion isolation

If you share a bed with a partner, listen up: this one's for you. There are few things more guaranteed to ruin a good night's sleep than lying there feeling every twist, turn and dramatic flop your bedmate makes. 

Being jolted awake by their midnight movements is annoying enough on a good day, but if you're already dealing with back pain, every unnecessary disturbance makes a tough situation a whole lot tougher.

On top of that, a growing body of research points to a meaningful connection between stress, sleep disruptions and musculoskeletal pain (something that is particularly common among middle-aged women) [5]. 

All of this makes reducing partner disturbance far more than a matter of comfort; it plays a real role in both your sleep quality and back health. That’s why we developed our Zero Disturbance® technology.

Designed to absorb movement and prevent it from travelling across the mattress, it means that when your partner shifts positions in the night, you’re far less likely to feel it. The quick-responding foam reacts as you move, letting you (or your partner) shift positions with minimal disturbance. 

Something like this can be difficult to truly appreciate in a traditional showroom setting, which is why we offer a 120-day trial, so you can experience it for yourself, in your own bed, on your own terms. If it turns out the mattress isn’t quite the right fit for you, simply get in touch and we’ll arrange a return and a full product refund. 

You deserve the time and space to figure out what suits your sleeping style.

How to choose the right mattress for you

There’s no universal right answer to choosing a mattress; it’s all about finding one that suits your body. One factor that is often overlooked in the mattress-buying process is sleep style. 

The way you position yourself throughout the night has a real influence on what kind of support and comfort you need. What works for a side sleeper is different from what a back or stomach sleeper requires. 

Side sleepers

As a general rule, side sleepers tend to do best on a softer mattress; one that offers contouring support to cushion the shoulders and hips and prevent pressure from building up in those areas over the course of the night. 

If you’re a side sleeper who also deals with back pain, zoned support becomes particularly important, as it ensures different parts of your body are receiving the right level of support while keeping your spine in a neutral position and preventing it from twisting out of alignment.

Maintaining spinal neutrality can be a little trickier as a side sleeper but with the right mattress, it’s absolutely achievable. This is where the Luxe Mattress really comes into its own. 

Featuring 7-zone support that covers everything from your head, shoulders and back through to your hips, knees, legs and feet, it's our most luxurious mattress. But, this doesn't mean lacking in support. 

The cloud-like cushioning cradles your hips and shoulders to relieve pressure where you need it most, while also providing the stability your back needs to stay properly supported through the night.

Back and stomach sleepers

If you’re a back or stomach sleeper, research consistently points to a firmer mattress as the better choice for your sleep style. A firmer surface means your back and the rest of your body are properly supported throughout the night, rather than sinking into a position that could cause strain. 

For stomach sleepers in particular, an overly soft mattress is worth avoiding altogether, as it can cause the spine to hyperextend, which is truly the last thing you want when you're trying to rest. 

Studies have found that medium-firm mattresses can meaningfully reduce clinically diagnosed back pain, shoulder pain and spine stiffness, while also having a positive impact on overall sleep quality [6]. 

Research has also shown that when it comes to managing low back pain specifically, medium-firm mattresses outperform even firm ones [7]. If this sounds like what your body needs, the Plus Mattress or the Koala Mattress are both great places to start. 

The Plus Mattress is our most advanced option, engineered to sleep 13% cooler than leading online mattress brands, while the Koala Mattress holds the title of Australia’s top-rated mattress. Like the Plus, the Koala Mattress also features a flippable topper, giving you the flexibility to switch between medium-firm and firm support. 

And if you're not sure which feel is right for you straight away, that's exactly what our 120-day trial is there for. Whether you sleep on your back, your stomach or your side, the trial gives you the time to properly test your mattress in real conditions and find out whether it's truly working for you and your back pain.

The Koala cheat sheet

Not sure where to start? We've broken it all down so you can cut straight to the Koala mattress that's going to be best for your back pain.

The Koala SE Mattress

The SE Mattress combines a medium feel, 3-zone support and a plush topper to deliver a genuinely comfortable night's sleep at an outstanding price point. So much so that it's earned a CHOICE® Recommendation for value.

The Koala Mattress

The Koala Mattress is Australia's #1 rated mattress for a reason. This multi-award-winning all-rounder comes with your choice of medium-firm or firm support, 3-zone support, zero motion transfer and a breathable cover.

The Plus Mattress

The Plus Mattress is our most advanced mattress. Featuring your choice of medium or medium-firm support, 5-zone support and seasonal temperature control, it's engineered to relieve pressure and deliver stable, reliable support.

The Polar+ Mattress

Offering your choice of medium or medium-firm support, 5-zone support and thermal bands that actively absorb body heat, the Polar+ Mattress is designed to give you the coolest, most comfortable night's sleep possible.

The Luxe Mattress

The Luxe Mattress combines plush, soft comfort, 7-zone support and cooling copper foam encased in Australian cashmere to deliver the most luxurious night's sleep in our range.

How often to replace your mattress

If your back pain tends to be at its worst first thing in the morning and gradually eases as the day goes on, your mattress is probably the culprit. And, if your current one has been with you for a significant stretch of time (we're talking years, possibly decades), there's a good chance it's quietly doing more harm than good. 

As a general guide, memory foam mattresses are recommended to be replaced every 7 to 10 years, while spring mattresses tend to have a slightly shorter lifespan of around 5 to 7 years. 

That said, mattresses are a big commitment in both price and the time you have them, so chances are you probably aren’t swapping them out as regularly as this. (Don’t worry, we get it. No shame here). 

At Koala, we build our mattresses to go the distance and every mattress in our range comes backed with a 10-year warranty. The durable, high-density foam used in our mattresses is designed to hold its shape over years of use, so you can count on a comfortable night's sleep for the long haul.

Tips for sleeping with a bad back

A new mattress is just one piece of the puzzle. Here are a few other things worth trying if you're sleeping with a bad back.

Give your legs some support

For side sleepers, a pillow between the knees is a small change that makes a big difference, as it keeps your top leg from tugging your spine out of place and relieves pressure on your hips and lower back. 

Back sleepers, your move is a pillow tucked under the knees, which helps your spine hold its natural curve and lets your back muscles finally relax the way they're supposed to.

Stretch it out 

A few gentle stretches before bed and again when you wake up can go a long way in loosening tight muscles and setting your body up for a more comfy sleep or day ahead.

Turn up the heat

A heating pad or a warm bath before bed can do wonders for a sore back. Both help increase blood flow and encourage your muscles to relax before you settle in for the night.

Your pillow might be the problem

If your head and neck aren't being properly supported through the night, the rest of your body is going to feel it, so it’s worth reflecting on the performance of your pillow. 

Side sleepers typically need a thicker pillow to fill the space between the ear and shoulder, while back sleepers usually find a medium or contoured pillow hits the sweet spot of being supportive enough to keep the neck comfortable without pushing it into an awkward forward position.

Back pain is, quite literally, a pain in the backside and if it's become a regular part of your life, it's worth having a chat with your GP or healthcare professional to get some personalised guidance.

 

REFERENCES

[1] https://pmc.ncbi.nlm.nih.gov/articles/PMC8655046/

[2] https://www.sciencedirect.com/science/article/abs/pii/S2352721815001400 

[3] https://link.springer.com/article/10.1186/s10195-021-00616-5

[4] https://pmc.ncbi.nlm.nih.gov/articles/PMC9311775/ 

[5] https://pubmed.ncbi.nlm.nih.gov/19303357/ 

[6] https://pubmed.ncbi.nlm.nih.gov/11896375/ 

[7] https://pubmed.ncbi.nlm.nih.gov/15230560/

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