Sleep Republic Mattress Review
The Sleep Republic Mattress is a high quality, innerspring mattress that has become one of the most popular online mattresses in Australia.
The Sleep Republic Mattress was awarded Australia’s ‘Best Overall’ Mattress in a Box in by Bedbuyer in 2025, for the third year in a row.
✏️ Product summary
- Innerspring mattress
- Medium-firm feel
- Mattress in a box
- 150 night trial period
- Current best price is $1,063.34 (queen)
- Click SHOP NOW and use code BBEXTRA5 for best price
Purchase and delivery
As with other mattress in a box products, the Sleep Republic Mattress can be conveniently ordered online through the Sleep Republic website. The mattress will be delivered to your door in a compact box.
It’s worth noting here that Sleep Republic offers the largest range of payment and finance options in the online mattress market (see ‘Payment & Finance’ options further down).
These options even include cryptocurrency payments, and should accommodate the needs of all customers.
Sleep Republic also offer free delivery, Australia wide. They have one of the best delivery services in the online mattress market and can do ‘next day delivery’ to most major cities. For more information about delivery, see our Delivery information section further down.
The mattress was fairly easy to remove from its packaging and should take around 10 minutes. As usual, we recommend having two people available to unpack a mattress in a box.
Keep in mind that there will be a substantial amount of packaging (cardboard and plastic) to dispose of. So, some planning may be required along with a fair bit of bin space.
As per our standard testing process, we gave the mattress 24 hours to decompress before we conducted our testing.
You can see this mattress in ‘real life’ in our video review here:
Aesthetically, the Sleep Republic Mattress presents beautifully. It combines simplicity with modern style, and gives off a distinct touch of luxury.
Its brand name label and embroidery at the base also give off plenty of class.
Mattress construction
As mentioned above, the Sleep Republic Mattress is an innerspring mattress that consists of multiple comfort layers and a high definition, pocket spring system.
1. Cashmere knitted fabric cover
The Sleep Republic Mattress starts with a top cover made from a cashmere knitted fabric. This fabric feels smooth, luxurious, and is well ventilated.
2. Gel infused memory foam
The cashmere fabric cover sits over a 30mm layer of gel infused memory foam.
3. 100% natural latex
Sitting under the layer of memory foam is a 30mm layer of 100% natural latex.
4. High definition pocket spring system
The main support system is Sleep Republic’s signature ‘high definition’ pocket spring system. This support system contains 1,850 individual springs (queen size), more than double that of a standard mattress.
5. High definition pocket spring system
The springs around the perimeter of the mattress are made of firmer, high tensile steel and are designed to enhance edge support.
5. 3D spacer fabric
The side panels of the mattress use a 3D spacer fabric that is designed to maintain a high level of ventilation throughout the mattress.
Comfort and support
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, all of our reviewers agreed that this mattress has a medium-firm feel. By majority vote, we 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
The overall build quality and craftsmanship of the Sleep Republic Mattress is exemplary and easily compares to many retail store mattresses double its price.
The quality of the foams and fabrics is excellent as is the quality of the stitching and finishings.
As we alluded to earlier, the mattress feels solid and stable. It is remarkable that a mattress of this quality comes compressed in a box.
It is remarkable that a mattress of this quality comes compressed in a box.
Edge support is excellent, thanks to the high tensile springs on the mattress perimeter. This should allow the user to use the full surface of the mattress, without fear of rolling off the edge.
The strong edge should also provide a stable surface for sitting activities.
The Sleep Republic Mattress isolates motion well, so the level of partner disturbance on this mattress should not be significant. So, a restless partner shouldn’t cause much disruption.
With that said, motion transfer may vary. A larger mattress (e.g. king size) will usually involve lower amounts of motion transfer. Partner disturbance will also depend on the size of the occupants of the bed.
This mattress sits 31cm high – a normal height for a good quality, innerspring mattress. Its 50kg product weight (queen size) is also quite typical of this mattress type.
The Sleep Republic Mattress comes with handy side handles. These handles are positioned vertically and are attached strongly. Side handles will always make moving or transporting a mattress easier.
The cashmere blend fabric used in the top cover has been tested by the CSIRO (Commonwealth Scientific and Industrial Research Organisation) and has been cleared of any harmful chemicals.
The gel visco memory foam has been certified as non-toxic by CertiPUR-US®, one of the world’s leading authorities in foam and fabric testing.
What 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 slats (with slats no longer than 8 cm apart) 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
The Sleep Republic Mattress comes with a 150 night trial period, which is superior to a typical trial period (100 nights) in the online mattress market.
This means that you can return the mattress for a refund if you are not satisfied. As you would expect, conditions do apply.
This mattress also comes with a 12 year warranty to cover any faulty materials or workmanship. This is superior to the more common 10 year warranty among its competitors.
Available sizes
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.
Here are Australia’s standard bed (mattress) sizes in 2025.
Did you know?
Sleep Republic also makes a kids mattress – the Sleep Republic Kids Mattress.
This kids mattress is based on the award-winning Sleep Republic Mattress and is ideal for toddlers, young kids, and teenagers. The Sleep Republic Kids Mattress is also well suited for co-sleeping.
Final verdict
The Sleep Republic Mattress is an outstanding mattress that is considered by our expert review team as the premier mattress in a box in Australia.
This mattress combines quality, value, and an impressive 150 night trial period.
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!
Retail Prices Bedbuyer Prices*
* Once Bedbuyer discount code is applied. Click SHOP NOW and use code BBEXTRA5 at checkout.
Sleep Republic Payment & Finance Options
VISA, Mastercard, American Express, PayPal, Afterpay, ZipPay, Klarna, GooglePay, ApplePay, Bitcoin, Ethereum
Delivery information
The Sleep Republic Mattress comes with free delivery, Australia wide.
- Metropolitan areas of Melbourne, Sydney, Brisbane, Gold Coast, Adelaide & Perth:
Next business day delivery available for orders placed up until 2pm AEDT/AEST - Other locations, non metro, and regional:
Estimated delivery time is 7 to 14 business days. Some locations may take up to 21 business days.
Accessories such as the pro base, pillow, sheets, protector and dog bed may be shipped separately and arrive later than the mattress delivery.
Product information – Sleep Republic Mattress
- Weight: 50kgs (Queen mattress)
- Height: 31cm
- Spring count : 1850 (Queen mattress)
- Coil gauge: 2.0mm, 1.9mm, 1.8mm (depending on the zone)
- Total maximum weight limit: 300kgs total, 150kgs per person (Queen mattress)
Certifications
Our Cashmere blend fabric has been CSIRO tested in Australia and cleared from presence of harmful chemical substances.
The gel visco memory foam in the Sleep Republic Mattress has been vetted and approved by CertiPUR-US®, a US based program that certifies the foam is tested and meets their content, emissions and durability standards.
Materials
1. Cloud-like comfort
Cashmere knitted fabric for the ultimate softness.
2. Comfortable contouring
Gel-infused memory foam contours to your body, providing pressure relief.
3. Increased breathability
Natural latex regulates airflow and body temperature through thousands of ventilation holes.
4. Sleep-inducing support
Up to 2500 high definition pocket springs provide support in 5 specific body zones and for co-sleepers, you won’t even know your partner is there.
5. Dynamic edge support
Higher tensile steel springs along the edges of the mattress protect sleepers from rolling off the bed.
6. Out of this world circulation
3D spacer fabric (a product which knits different fibres together on different faces) further enhances airflow.
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