Sleep Republic Mattress Review
The Sleep Republic Mattress is one of Australia’s most awarded mattresses in a box.
Its innerspring design combines premium comfort foams with a high-definition pocket spring system, delivering excellent support, pressure relief, and durability.
It sits in the middle of Sleep Republic’s range, between the entry-level Sleep Republic ES and the premium Sleep Republic LUXE.
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✏️ Product summary
- Innerspring mattress
- Medium-firm feel
- Mattress in a box
- 150 night trial period
- Current best price is $1,139.29 (queen)
- Click SHOP NOW and use code BBEXTRA5 to unlock this price
Purchase and delivery
How do I buy a Sleep Republic Mattress?
The Sleep Republic Mattress can be purchased directly through the Sleep Republic website, with the entire ordering process designed to be simple and convenient.
Like other mattress-in-a-box brands, the mattress arrives compressed, rolled, and boxed, making it easy to move into your bedroom before set-up.
You can see this mattress in ‘real life’ in our video review here:
Delivery is free to most metro and inner regional areas across Australia. Sleep Republic also offers one of the fastest delivery services in the market, with next-day delivery available to major cities such as Melbourne, Sydney, Brisbane, Adelaide, Perth, Canberra, Hobart, and the Gold Coast (for orders placed before 2pm on business days).
For most other locations, delivery takes 3–7 business days, while more remote regional addresses may take up to 21 business days.
Unboxing is straightforward, although the queen mattress weighs around 50kg, so we recommend having two people available. The mattress should take about 10 minutes to unpack, and we suggest allowing up to 24 hours for it to fully expand before sleeping on it.
It’s worth noting that Sleep Republic also provides one of the widest ranges of payment and finance options in the online mattress industry. This includes standard credit card payments, Afterpay, and Zip, giving customers maximum flexibility.
Aesthetics and Presentation
What does the Sleep Republic Mattress look like?
The Sleep Republic Mattress presents with a modern, sophisticated style that will suit most bedroom decors. It stands 31cm high, giving it a substantial profile without appearing bulky.
The design combines a black base with a white quilted top, accented by subtle wave-like stitching across the side panels. This creates a clean yet distinctive look that feels both premium and contemporary.
Branding is minimal but effective, with the embroidered “Where dreams are made” tagline and the SR logo adding a touch of class. The mattress also features strong side handles, positioned neatly within the design for practical use without compromising aesthetics.
Overall, the Sleep Republic Mattress has a polished, luxury appearance that reflects the quality inside. It looks every bit like a premium mattress, even before you lie on it.
Mattress construction
What’s inside the Sleep Republic Mattress?
The Sleep Republic Mattress is an innerspring mattress that combines multiple comfort layers with a robust pocket spring system. This blend of foams, latex, and springs creates a balanced feel of cushioning and support.
1. Cashmere Knitted Fabric Cover
The mattress starts with a quilted cashmere fabric top. This material feels soft and luxurious to touch, while its breathable structure helps keep the surface cool and comfortable.
2. Gel Infused Memory Foam (30mm)
Beneath the cover is a layer of gel-infused memory foam that contours to the body and relieves pressure points. The gel infusion assists with heat dissipation, helping to regulate body temperature during sleep.
3. 100% Natural Latex (30mm)
Sitting under the memory foam is a ventilated latex layer. Latex provides buoyant support and durability, while thousands of tiny ventilation holes promote airflow and add to the mattress’s cooling properties.
4. High Definition Pocket Spring System
The core support comes from Sleep Republic’s high-definition pocket spring system. With up to 2,500 individually encased springs (queen size 1,850), this system is zoned to provide firmer support where you need it (hips, lower back) and softer support around the shoulders and knees. The result is improved spinal alignment and reduced partner disturbance.
5. Dynamic Edge Support
Around the perimeter, firmer high-tensile steel springs reinforce the edges. This prevents sagging, increases usable surface area, and provides stability when sitting or sleeping near the edge.
6. 3D Spacer Side Fabric
The side panels are finished with a breathable 3D spacer fabric that helps maintain airflow throughout the mattress. This not only improves ventilation but also adds a touch of modern style.
Comfort and support
What’s it like to sleep on the Sleep Republic Mattress?
The top surface of this mattress (cashmere knitted fabric) feels soft, smooth, and luxurious. This top cover is also well ventilated and may help to regulate temperature during sleep.
The comfort layers (gel infused memory foam and natural latex) absorb body weight smoothly and provide lovely pressure relief.
Quite simply, this mattress has a superb balance of comfort, support, and responsiveness. There is also a real sense of stability with this mattress, and it should appeal to most people.
The Sleep Republic Mattress should suit all sleeping positions (side sleepers, back sleepers, and stomach sleepers) but understandably, its suitability will vary between individuals.
When it comes to a specific firmness rating, our reviewers settled on a 7 / 10 on the firmness scale (with 10 being the firmest).
Firmness rating
Please note that our firmness ratings are just a guide and they do not necessarily relate to comfort.
Furthermore, our firmness ratings are assigned based on Bedbuyer’s testing process and these may differ from firmness ratings given by individual companies. Mattress firmness will also vary depending on the type of bed base used.
We tested the Sleep Republic Mattress on the Chiropedic Bed Base which is a good quality bed base with rigid slats.
The high definition pocket spring system provides excellent spinal support, and we detected no undesirable sinking or sagging. The mattress has a 300kg weight limit (queen size) so it should suit people of all sizes.
Sleep Republic’s ‘High Definition’ Pocket Spring System
The Sleep Republic Mattress responds nicely to normal sleep movements and we rated its level of responsiveness as ‘optimal’. In basic terms, this means that changing sleep positions (and intimate activities) shouldn’t be any trouble.
Responsiveness
Please note that our responsiveness scales are just a guide and preferred responsiveness levels will vary between individuals. It’s worth noting also that innerspring mattresses are generally more responsive than foam mattresses.
The finer details
What else should I know?
The overall build quality of the Sleep Republic Mattress is excellent, easily on par with many retail store mattresses at a much higher price point. The craftsmanship feels solid and refined, from the stitching through to the quality of the foams and fabrics.
At 31cm high, this mattress sits at a standard profile for a good quality innerspring mattress. A queen size weighs around 50kg, so while it’s not excessively heavy, you’ll likely need two people when moving or rotating it.
Thankfully, Sleep Republic has included strong vertical side handles stitched securely into the border, making this task more manageable.
Edge support is one of the mattress’s standout features. Thanks to the firmer high-tensile steel springs that line the perimeter, sleepers can comfortably use the full surface of the mattress without feeling unstable near the edges. The reinforced edge also provides a stable base for sitting.
Motion transfer is well contained. The high-definition pocket spring system isolates movement effectively, meaning a restless partner shouldn’t disturb your sleep too much.
That said, motion transfer will vary slightly depending on mattress size (larger mattresses like a king generally reduce disturbance further) and the weight of the occupants.
From a health and safety perspective, the cashmere blend fabric used in the cover has been independently tested by the CSIRO and cleared of harmful chemicals. The memory foam layer is also certified by CertiPUR-US®, ensuring it meets international standards for content, emissions, and durability.
Easily on par with many retail store mattresses at a much higher price point.
All things considered, the Sleep Republic Mattress delivers durability, strong edge support, and a clean bill of health in terms of safety certifications – features that add to its reputation as one of the best mattresses in a box available in Australia.
Other details
Product weight of each mattress size (approximately):
- Super King Mattress: 65kg
- King Mattress: 60kg
- Queen Mattress: 50kg
- Double Mattress: 45kg
- King Single Mattress: 38kg
- Single Mattress: 32kg
Additional information
- Total maximum weight limit: 300kgs total, 150kgs per person (Queen mattress)
- Spring counts: 1,850 pocket springs (Queen mattress)
- Coil Gauge: 2.0mm, 1.9mm, 1.8mm (depending on the zone)
Country of Origin
Designed in Melbourne, Australia. Manufactured in China.
Bed base compatibility
What type of bed base should I use?
As with most mattresses, we recommend the Sleep Republic Mattress to be used on a bed base with flat panel slats such as the Koala Paddington Bed Base.
A bed base with solid/rigid slats such as the Sleep Republic Pro Base, would also be very suitable.
We would advise against using a bed base with flexible (posture) slats as this type of base may not provide adequate support. Ultimately, the use of an unsupportive mattress foundation will void the mattress warranty.
We don’t recommend the Sleep Republic Mattress to be used with an adjustable (electric) bed base as this may cause damage to the mattress components. Here is our full list of mattresses that are compatible with an adjustable bed base.
It’s worth noting here that mattress firmness, performance, and durability will vary with different bed bases.
Trial period and warranty
What happens if I don’t like it?
The Sleep Republic Mattress comes with a generous 150 night trial period, one of the longest trial offers in the Australian mattress-in-a-box market.
This gives you plenty of time to test the mattress in your own home and decide if it’s right for you.
If you’re not satisfied, Sleep Republic will arrange to collect the mattress for donation or recycling and provide a refund. As with most trial offers, conditions apply – for example, you’ll need to keep the mattress for a minimum of two weeks to allow your body time to adjust. The trial is also limited to one return per household.
Backing up this trial is a 12 year warranty, which covers faulty workmanship and materials, as well as visible sagging or body impressions greater than 3.5cm. This warranty length is slightly above the industry standard of 10 years, giving buyers extra peace of mind.
Available sizes
What size options are available?
The Sleep Republic Mattress is available in all 7 Australian mattress sizes (super king, king, queen, double, king single, long single, and single size).
This is noteworthy, as Sleep Republic is one of only a few, bed in a box companies to offer the full collection of Australian mattress sizes.
The graphic below includes all of Australia’s standard bed (mattress) sizes in 2025.
Customer feedback
What are real Aussie customers saying?
The Sleep Republic Mattress enjoys strong praise from Australians – on ProductReview.com.au it holds a 4.8 out of 5 stars rating from over 2,000 verified reviews.
Many users highlight the blend of comfort and support, saying the mattress helped reduce back pain or discomfort. Comments like “feel like sleeping in the clouds” and “super quick delivery and the mattress is so comfortable” appear repeatedly.
Overall, the user sentiment strongly leans positive, reinforcing Sleep Republic’s reputation as a leading mattress-in-a-box choice in Australia.
Prices
How much does the Sleep Republic Mattress cost?
Here are the retail prices and current Bedbuyer prices of the Sleep Republic Mattress.
Retail Prices
- Super King Mattress: $1,999
- King Mattress: $1,799
- Queen Mattress: $1,599
- Double Mattress: $1,249
- King Single Mattress: $1,149
- Long Single Mattress: $1,049
- Single Mattress: $999
Bedbuyer Prices*
- Super King Mattress: $1,424.29
- King Mattress: $1,281.79
- Queen Mattress: $1,139.29
- Double Mattress: $889.91
- King Single Mattress: $818.66
- Long Single Mattress: $747.41
- Single Mattress: $711.79
* Click SHOP NOW and use code BBEXTRA5 to unlock Bedbuyer price.
Did you know?
Sleep Republic also makes kids mattress
Sleep Republic also makes a dedicated kids mattress – the Sleep Republic Kids Mattress.
Designed with the same award-winning technology as the main Sleep Republic Mattress, it offers the right balance of comfort and support for growing bodies. It’s ideal for toddlers, children, and teenagers, and thanks to its durable build and excellent edge support, it’s also well suited to co-sleeping with parents.
Final verdict
Is this the right mattress for you?
The Sleep Republic Mattress stands out as one of the best-value mattresses in Australia. It combines premium materials like cashmere fabric, gel memory foam, and natural latex with an advanced high-definition pocket spring system.
The result is a mattress that feels luxurious, stable, and supportive, while also minimising partner disturbance.
Its craftsmanship and durability are outstanding for a mattress that arrives compressed in a box, and the 150-night trial period with a 12-year warranty adds extra peace of mind.
For those looking for a high-quality mattress-in-a-box that delivers both comfort and long-term value, the Sleep Republic Mattress is hard to beat.
Bedbuyer’s rating: 4.9 / 5
Here are our ratings for each category:
Comfort
Spinal Support
Build Quality
Partner Disturbance
Value for Money
As you would expect, the Sleep Republic Mattress made it into Australia’s Top 12 Best Mattress in a Box in 2025.
If you have any questions about this mattress, leave a comment below and we’ll respond shortly!
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