TOP 3 Best Firm Mattresses in Australia 2025【Complete Guide】

SEP 16, 2025

811 views, 4 mins read

If you’ve ever woken up with an aching back, chances are your mattress might be part of the problem. For many Australians, finding the best firm mattress Australia offers can be life-changing. A firmer sleeping surface helps keep your spine aligned, prevents that “sinking” feeling, and supports healthy posture throughout the night.

But is a firm mattress right for everyone? And with so many options on the market, which one should you choose? In this guide, we’ll break down the pros and cons, test some of the best firm mattresses in Australia, and answer your most common questions before you buy.

In this article

1. The Pros & Cons of Firm Mattress 2. [Expert Tested] 3 Best Firm Mattresses in Australia

3. FAQs about Firm Mattress

The Pros & Cons of Firm Mattress

Pros

Better Spinal Alignment – Firm mattresses provide a solid surface that helps your back stay in a neutral position.
Prevents Excess Sinkage – Unlike softer beds, firm ones stop your body from dipping too far, which is helpful for heavier people.
Great for Back Sleepers & Stomach Sleepers – If you sleep on your back or stomach, firm mattresses help prevent your midsection from collapsing into the bed.

Cons

Not Ideal for Side Sleepers – Side sleepers may feel too much pressure on their shoulders and hips.
Adjustment Period – Switching from a soft mattress to a firm one can feel uncomfortable at first, and may take a few weeks.
Limited Pressure Relief – People with joint pain or arthritis might prefer something with more cushioning.

Tips

In reality, a firm mattress isn’t suitable for every sleep position. While it can be beneficial for spinal health to some extent, it’s important to remember that the human spine isn’t perfectly straight—it naturally forms an “S-shaped” curve. That’s why a medium-firm mattress with zoned support is often more effective, as it adapts to the body’s unique shape and keeps the spine aligned without creating pressure points.

Another great option is an adjustable-firmness mattress. These allow sleepers to customize the level of support, which is especially helpful for households with different comfort needs or for those whose preferences change over time. For example, side sleepers may prefer a slightly softer setting to cushion the shoulders and hips, while back and stomach sleepers might need a firmer surface to maintain spinal alignment.

Ultimately, the best mattress isn’t about choosing the hardest or softest option—it’s about finding the right balance between comfort and support. With zoned construction or adjustable firmness, you can achieve a sleep surface that works with your body, not against it, promoting better rest and long-term spinal health.

[Expert Tested] 3 Best Firm Mattresses in Australia

We tested several mattresses available in Australia, focusing on support, durability, and comfort. Here are our top three picks:

2.1 Newentor Hybrid Mattress

Trial/Warranty: 120-night trial, 10-year warranty.

This mattress stands 25cm tall with a medium-firm feel, offering excellent value for money and quality craftsmanship. It features a 7-zone pocket spring system designed with ergonomic support to keep your spine aligned while minimizing partner disturbance. The top layer is made with denser, more resilient foam for added stability, while the reinforced edges provide reliable support—helping you get in and out of bed with confidence and reducing the risk of slipping or falling.

2.2 Newentor Hesperis Memory Foam Mattress

Trial/Warranty: 120-night trial, 10-year warranty.

Unlike a traditional hybrid, the Newentor Hesperis is an all-foam mattress with adjustable firmness to match your personal comfort. Its unique three-layer construction lets you rearrange the internal foam layers to switch easily between soft and medium-firm feels.

At 22cm thick, this mattress is a practical choice for RVs, bunk beds, or smaller spaces, thanks to its streamlined profile and supportive build. The premium memory foam delivers quick rebound, stable pressure relief, and lasting durability, while the sturdy non-slip base ensures the mattress stays firmly in place.

2.3 Emma Luxe Mattress

Trial/Warranty: 100-night trial, 10-year warranty.

The Emma Luxe Mattress combines HRX support foam with pocket springs, making it one of the most durable firm mattresses in Australia. Emma is well-known in Europe and has gained strong popularity in the Australian market.

It also has a medium-firm feel, delivering both solid support and a comfortable sleeping surface. Suitable for back, stomach, and side sleepers, it uses a zoned pocket spring system—similar to the Newentor Hybrid Mattress—that provides targeted lift in heavier areas like the hips. Overall, it’s a well-balanced mattress worth considering.

Check out Emma Mattresses review >>

FAQs about Firm Mattress

How do I know if I need an extra firm mattress?

If you’re a heavy sleeper (over 100kg) or find yourself sinking into softer beds, you may benefit from an extra firm mattress.

Is a firm mattress always the best for back pain?

Not always. While firm mattresses help with spinal alignment, too firm can create pressure points. Most experts recommend a medium-firm mattress.

Soft or firm mattress, which one better for me?

If you’re wondering whether a soft or firm mattress is better, it really comes down to how you sleep. Side sleepers usually love a softer feel because it cushions the shoulders and hips, while back or stomach sleepers often feel more supported on something firmer.

How to choose the right mattress firmness?

When choosing the right firmness, think about your sleep position, body weight, and what feels comfy to you. Lighter folks may sink less and enjoy softer beds, while heavier sleepers often need firmer support to stay aligned. For most people though, a medium-firm mattress hits that sweet spot of comfort and support.

Bottom Lines

At the end of the day, the best firm mattress Australia sleepers can choose should balance comfort, support, and value. Newentor mattresses deliver all three. The Hybrid offers zoned support for healthy posture, while the Hesperis Memory Foam lets you adjust firmness to your liking. Both are built to last and priced fairly, making them a smart investment for better sleep and long-term health.

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