150-night sleep trial
If you don’t love the firmness of our mattress in the first 150 nights of sleeping, then you can return it for a full refund.
Multi-award winning mattress
Multi-awarded as Bedbuyer’s ‘Best Firm Mattress. Awarded for the past 3 years in a row 2023, 2024 & 2025.
Nearly Perfect!
With an average rating of 4.9 stars on productreview.com.au, our happy customers are making themselves heard.
Australia's best firm mattress
Multi-awarded as Bedbuyer’s ‘Best Firm Mattress. Awarded for the past 3 years in a row – 2023, 2024 & 2025.
4.9 stars
With an average rating of 4.9 stars on productreview.com.au, our happy customers are making themselves heard.
Endorsed by the Australian Spinal Research Foundation
The Sleep Firm mattress has been officially endorsed by the Australian Spinal Research Foundation.
GECA and Sensitive Choice certified
Achieved GECA and Sensitive Choice certifications, highlighting environmental responsibility and asthma-friendliness.
Choice reviewed
Reviewed and compared by Choice. Read the review.
Australia’s firmest mattress in a box, built for true support and lasting comfort.
At Sleep Firm, we have a single-minded focus – giving the people firmness. We make entirely firm mattresses, from the centre to the firm supportive edge.
Other mattress brands might have a soft mattress and a slightly firmer pocket spring mattress in their range. Not us. We are firm to the core.
Discover the Premium Australian Craftsmanship of Sleep Firm Mattresses.
The Sleep Firm mattress is proudly Australian made, crafted in Melbourne by Chiropedic—a family-owned business with over 30 years of local manufacturing expertise. Every mattress is designed, cut, stitched, and assembled right here in Australia, using premium materials sourced to meet strict quality and safety standards. By choosing Sleep Firm, you’re not only getting a mattress built for true firmness and lasting support, but also supporting Australian jobs, local craftsmanship, and a product that’s made specifically for Australian sleepers and conditions.
42% stronger than standard springs.
At the heart of the Sleep Firm mattress is the S+ Pro 5-Zone Pocket Spring System, engineered for superior support and durability. Each individually encased spring responds independently to body weight and movement, ensuring targeted pressure relief and minimising partner disturbance. With up to 1,326 springs in a King size, the system provides precise spinal alignment and edge-to-edge stability, so sleepers enjoy consistent firmness across the entire surface. Constructed with medical-grade fabric and tested to be up to 42% stronger than standard pocket springs, these springs are built to deliver uncompromising support and long-lasting performance.
S+ Pro 5‑Zone Pocket Spring System
Our 5 Zone S+Pro high spring count mattresses promote the best support for all body types and weights. You won’t find this in a major retail store mattress.
Boomerang foam
Our Boomerang Foam technology is a premium density foam that springs back into place, night after night. Its open cell structure will also keep your sleep environment cool.
5 sleeping zones
Each zone is designed to provide targeted support to different parts of the body, with the goal of promoting proper spinal alignment and reducing pressure points.
Foam box edge
Our quality foam box edge helps prevent roll off. You can rest assured that your firm mattress will continue to provide a high level of sleep quality from edge to edge.
Why Sleep Firm
Sleep Firm was founded with a single-minded goal – to create the best mattress for people who like a firm feel. Through years of research, design, and feedback, we’ve created a sleeping solution that meets the very specific needs of our customers.
Firmness is all we know. You won’t find a better extra firm mattress anywhere in Australia. We are so confident that you’ll love our firm mattress, that we’ll give you 150 nights to try it, totally risk-free.
Just how firm is the Sleep Firm mattress
We’re glad you asked. Let’s put it this way – it’s very firm but not rock hard. We like to define it as enjoyably firm. An enjoyably firm mattress is a mattress that provides a supportive and comfortable sleeping surface while still offering a significant level of firmness. It should have enough resistance to support the natural curves of your body and prevent excessive sinking or sagging, especially around the hips and lower back.
Up to 1326 Springs
High spring count tailored for spinal alignment, with medical‑grade fabric.
The Queen model features 900 springs; King has 1,326.
42% stronger
Our specialised spring technolgoy ensures 42% greater strength than typical pocket springs.
Zoned for targeted firmness
Each zone is designed to provide targeted support to different parts of the body, with the goal of promoting proper spinal alignment and reducing pressure points.
150-night sleep trial
We're so confident that you'll love it that we offer a 150-night sleep trial.
Enjoy sleeping firmer for 150 nights, totally risk-free
If you don’t love the firmness of our mattress in the first 150 nights of sleeping, then you can return it for a full refund.
Don't just take our word for it!
Our customers are firm believers in better sleep.
I purchased a sleep firm bed as it’s rating was 9 out of 10 on the mattress firmness scale. I am a tall and large person so wanted a mattress with additional inner springs that catered to my weight and wouldn’t sag. A firmer mattress is better for larger people as you don’t “sink” into the mattress and feel like you are not lying straight. This mattress has delivered. Firm, supportive, comfortable (if you like a very firm bed, which I do). Would recommend. It’s a heavier mattress due to the extra springs in it, so getting it out of the box and onto the bed was tricky for one person. Would be great if mattresses had handles on the side like they used to.
This mattress was purchased for a guest bedroom. Whilst I have not used it (yet), several guests have stayed and all rated it very comfortable. One guest was rehabilitating from spinal surgery. I am glad that I could offer them good nights' sleep. My enjoyment came from opening it and watching it puff up!! It was easy enough for one person to manage.
I love this mattress so much! I have had back problems for since I was in grade school and never quite found a mattress that my spine agreed with. We bought our Sleep Firm King 1 month after we had our first son because we found ourselves uncomfortable and cramped in between animals and a baby and more sleep deprived than ever. This mattress was our saving grace. It is the firmest mattress I have had the pleasure of sleeping on and has helped my back problems tenfold, even with all of the aches and pains that come post partum. It is so roomy and comfortable, I truly recommend this mattress to anyone that is looking for a firm change!
This mattress has completely changed my sleep! I’ve struggled with restless nights and constant lower back pain for years, and no mattress ever seemed to help. We decided to try the Sleep Firm Queen after moving into our new house, and honestly, it’s been a life saver. The support is incredible—it’s the firmest mattress I’ve ever owned, and my back pain has eased more than I thought possible. Even after long days on my feet, I wake up refreshed and without aches. It’s comfortable, supportive, and truly everything I was looking for. I recommend it to anyone who wants real firmness and real relief
I can’t say enough good things about this mattress! I’ve always preferred a firmer bed but struggled to find one that was truly supportive without feeling like a rock. The Sleep Firm King has been amazing—it feels solid, supportive, and still comfortable night after night. My partner and I both sleep so much better, and my morning back stiffness is practically gone. If you’re searching for a mattress that delivers real firmness and lasting comfort, this is the one.
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