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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.
Award winning mattress

Awarded as Bedbuyer’s ‘Best Firm Mattress 2026
Nearly Perfect!

With an average rating of 4.9 stars on productreview.com.au, our happy customers are making themselves heard.

Our Firm Mattresses

Sleep Firm Mattress

$1,099.00
 
$1,099.00

Sleep Firm Ultra Mattress

$1,499.00
 
$1,499.00

Sleep Firm Luxe Mattress

$1,899.00
 
$1,899.00

Australia's best firm mattress

Awarded as Bedbuyer’s ‘Best Firm Mattress 2026.
productreview_new-Sleep Firm

4.9 stars

With an average rating of 4.9 stars on productreview.com.au, our happy customers are making themselves heard.
spinal-Sleep Firm

Endorsed by the Australian Spinal Research Foundation

The Sleep Firm mattress has been officially endorsed by the Australian Spinal Research Foundation.
SensitiveChoice-Sleep Firm

GECA and Sensitive Choice certified

Achieved GECA and Sensitive Choice certifications, highlighting environmental responsibility and asthma-friendliness.
Choice-Sleep Firm

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.

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Corner-of-Sleep-Firm-with-Label_1-Sleep Firm
Australian-Made-logo_0558a933-eb97-4d7d-8261-c8a5c8df9f75-Sleep Firm

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.

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Mattress Range

The Sleep Firm Range

All mattresses share our signature S+ Pro 5-Zone Pocket Spring System — up to 1,326 springs, 42% stronger than standard. The difference is in your preferred firmness level.

Most Popular1
Firmness
9/10
Enjoyably Firm

Sleep Firm Mattress

The classic. Very firm, endlessly supportive — the mattress that started it all.

From $1,099

Key Features

  • High density foam comfort layers
  • S+ Pro 5-Zone Pocket Spring System
  • Up to 1,326 springs (King)
  • Boomerang open-cell foam (cool sleep)
  • Edge-to-edge support
  • Next day delivery (Melbourne Metro)

Specs

Height
26 cm
Springs (Queen)
900
Springs (King)
1,326
Warranty
15 Years
Trial
150 Nights
Made In
Melbourne

Ideal For

Back sleepers Stomach sleepers Side sleepers All body types Back pain support

Available Sizes

Size Dimensions Price
Single 188×92×26 cm From $1,099
Queen 203×153×26 cm From $1,499
King 203×183×26 cm From $1,799
Best Firm 2026
Firmness
9/10
Ultra Firm

Sleep Firm Ultra

Maximum firmness. Zero compromise. Built for those who want the absolute firmest surface possible.

From $1,499

Key Features

  • Double layer of ultra firm foam
  • Ultra firm pocket springs
  • S+ Pro 5-Zone Pocket Spring System
  • Up to 1,326 springs (King)
  • No give, no sink — edge to edge
  • Bedbuyer's Best Firm Mattress 2026

Specs

Height
28 cm
Springs (Queen)
900
Springs (King)
1,326
Warranty
15 Years
Trial
150 Nights
Made In
Melbourne

Ideal For

Back sleepers Stomach sleepers Heavier body types Zero-sink preference Maximum spine support

Available Sizes

Size Dimensions Price
Single 188×92×28 cm From $1,499
King Single 203×107×28 cm From $1,799
Double 188×137×28 cm From $1,899
Queen 203×152×28 cm From $1,999
King 203×183×28 cm From $2,399
Premium
Firmness
7/10
Luxe Firm

Sleep Firm Luxe

Firm support meets cloud-like indulgence. Italian Water Gel Foam for those who want firmness with a plush touch.

From $1,899

Key Features

  • CloudGel™ Italian Water Gel Foam
  • Temperature-regulating, naturally antibacterial
  • S+ Pro 5-Zone Pocket Spring System
  • Boomerang foam for cool sleep
  • Tallest profile at 30 cm
  • Ideal for those wanting pressure relief

Specs

Height
30 cm
Springs (Queen)
900
Springs (King)
1,326
Warranty
15 Years
Trial
150 Nights
Made In
Melbourne

Ideal For

Side sleepers Hot sleepers Pressure relief needs Couples Luxury seekers

Available Sizes

Size Dimensions Price
Single 188×92×30 cm From $1,899
King Single 203×107×30 cm From $2,299
Double 188×137×30 cm From $2,399
Queen 203×152×30 cm From $2,499
King 203×183×30 cm From $2,999

Not sure which mattress is right for you?

 TAKE THE QUIZ
Firmly The Best - SleepFirm Bedbuyer

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.

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High-spring-count-Sleep Firm

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-Sleep Firm
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.
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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-Sleep Firm
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.
Sleep-Firm-Boomerang-foam-Sleep Firm

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.

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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.

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Man-sleeping-on-Sleep-Firm-Mattress-1-Sleep Firm
High-spring-count-Sleep Firm
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.
SPro-Pocket-Spring-5-Sleep Firm
42% stronger

Our specialised spring technolgoy ensures 42% greater strength than typical pocket springs.
5-zones-pocketspring-mattress-Sleep Firm
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.
Sleep Firm Mattress-Sleep Firm
150-night sleep trial

We're so confident that you'll love it that we offer a 150-night sleep trial.
Sleep Firm mattress and Charcoal Bed Frame Ensemble-Sleep Firm

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.

 Shop the Sleep Firm Mattress NOW

Don't just take our word for it!

Our customers are firm believers in better sleep.

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