Sleep Firm Mattress Review
The Sleep Firm Mattress is an excellent mattress that is ideal for those people seeking an unmistakable firm feel. It is Australian made and was awarded Bedbuyer’s ‘Best Firm Feel’ Mattress in a Box in 2021.
Purchase and delivery
The Sleep Firm Mattress can be conveniently ordered online through the Bed in a Box Shop website. Delivery is free and the mattress can be delivered Australia-wide. Bed in a Box shop has an efficient delivery service and shipping to major cities is fast (see delivery times below in the ‘Delivery’ section).
The mattress was easy to remove from its packaging, but you may need two people to assist with the unboxing. We allowed 24 hours for the mattress to fully decompress before conducting our testing, but based on appearance, it looked ready to sleep on immediately.
To get a closer look at this mattress in ‘real life’ check out our video review below:
Aesthetically, the Sleep Firm Mattress gives off a modern, edgy vibe. The grey and black colour theme differs to many of its ‘lighter’ coloured competitors, and the black mesh covering the sides of the mattress looks very cool.
Comfort and support
The top cover of this mattress is made of a special Bekaert Deslee ‘Adaptive’ Fabric. This feels soft and breathable and is designed to keep you cool (and dry) during sleep.
This outer fabric sits over a ‘Quiltec’ foam which helps to minimise body impressions in the quilting fabric. Then comes Sleep Firm’s exclusive ‘Boomerang’ foam which (as the name suggests) has high rebound properties and is designed for long lasting firm comfort.
Despite the Sleep Firm Mattress having a very firm feel, it is certainly not ‘hard’. Its level of pressure relief is modest, but it is as comfortable as you will get at this level of firmness.
This mattress should suit most back sleepers, but depending on the individual, it may suit some side and front sleepers also. As you would expect, our team rated it as an ‘extra firm’ feel and a 9 / 10 on the firmness scale (with 10 being the firmest).
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.
Sitting below this comfort layer, is the Sleep Firm’s ‘S+Pro’ 5 zone pocket spring system. This spring unit contains a very high spring count of 1,092 (queen size) which is well above average for a pocket spring mattress. Furthermore, each spring is 42% stronger (than a standard pocket spring mattress), and is covered with a medical grade fabric pocket.
The spring system sounds fancy on paper, but in real life it is even more impressive. It feels stable, balanced, and partner disturbance is very minimal. In terms of spinal support, the Sleep Firm Mattress is outstanding and will accommodate people of all sizes.
The Sleep Firm Mattress responds nicely to normal sleep movements and we rated its level of responsiveness in the ‘optimal’ zone. In basic terms, this means that changing sleep positions (and intimate activities) shouldn’t be any trouble.
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
Overall build quality and craftsmanship of the Sleep Firm Mattress is superb. Edge support is sound thanks to its 7cm foam box construction. The sides of the mattress contain a ‘3D spacer fabric’ (for air circulation) which not only looks stylish, but you can actually feel air moving out of the mattress sides during sleep movements.
The Sleep Firm Mattress comes with a solid 100 night trial period and a 15 year warranty. Its Boomerang foam is well certified as eco-friendly and non-toxic, and it is also approved by the National Asthma Council’s Sensitive Choice program.
What bed base should I use?
As with most mattresses, we recommend the Sleep Firm Mattress to be used with a solid bed frame (such as the Sleep Republic Pro Base), or a solid ensemble base (with the slats no longer than 8 cm apart).
A bed frame (with flexible slats) may still be adequate, but again, we strongly recommend that the distance between each slat is less than 8 cm. Use of an unsupportive mattress foundation will usually void the mattress warranty.
Furthermore, we do not recommend the Sleep Firm Mattress to be used with an adjustable (electric) bed base as this will also void the warranty. 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.
The Sleep Firm Mattress is available in 5 sizes (king, queen, double, king single, and single size) so it should accommodate almost any household situation. Here are Australia’s standard bed (mattress) sizes in 2021.
If you’re after a distinct firm feel to your mattress, the Sleep Firm Mattress should be at the top of your list. It is Australian made, has excellent support, and is competitively priced.
Bedbuyer’s rating: 4.5 / 5
Here are our ratings for each category:
Value for Money
Did you know? The Sleep Firm Mattress made it into Australia’s Top 12 Mattress in a Box in 2021.
If you have any questions about the Sleep Firm Mattress, comment below or please contact us!
In a nutshell 🥜
- Awarded Bedbuyer’s ‘Best Firm Feel’ Mattress in a Box in 2021
- 5 zone pocket springs
- Australian Made
- 100 night free trial
- Click SHOP NOW and use code BEDBUYER100 to get a further $100 off!
Recommended Retail Prices Special Bedbuyer Prices*
Recommended Retail Prices
Special Bedbuyer Prices*
Free delivery, Australia wide.
If in stock, mattresses are dispatched from our Melbourne warehouse within 1 business day and will be delivered to you based on the estimated delivery times below:
- Melbourne metro within 3 business days
- Sydney, Adelaide & Canberra metro within 7 business days
- Brisbane & Gold Coast metro within 10 business days
- Perth & Hobart metro within 14 business days
- All other areas within 14 business days
Within 1 business day of when your order is placed, you will be contacted by either phone or email confirming your order has been received and is booked in with your area’s third-party delivery partner. Once booked in, the third-party delivery partner will send you, via sms and email, a link so you can track the shipment.
Certifications – Sleep Firm Mattress
CertiPUR-US certified foams
Ultra Fresh anti-microbial treated
National Asthma Council Sensitive Choice – Approved Dunlop foam
Specifications – Sleep Firm Mattress
- Weight (Queen) : To be confirmed
- Height : 27 cm
- Maximum Weight Limit : 500 kg + (Queen mattress)
- Spring count: 1,092 (Queen mattress)
Introducing the Sleep Firm Mattress with Exclusive S+ Pro 5 Zone Independent Spring System designed for sleepers looking for straight out firm support without feeling like they are sleeping on the floor.
This bed is an Australian Made Mattress and a first real “Retail Store Mattress” that comes in a box. It is designed specifically for those sleepers who prefer a firm support and comfort layer.
The Sleep Firm Mattress is designed for sleepers looking for straight out firm support but without feeling like sleeping on the floor. A 9/10 firmness level.
Sleep Firm Comfort Layer
Bekaert Deslee Adaptive Fabric & Quiltec Foam
The top layer of the Sleep Firm Mattress is made using a high grade Adaptive knitted fabric combined with quiltec foam which works to eliminate body impressions within the quilting. Made with a Variable Pressure Foaming process, its open cell structure provides excellent moisture dissipation through the top quilted layer of the mattress. The Adaptive fabric by Bekaert Deslee responds dynamically to temperature changes and keeps your sleep environment cool and dry, all night, every night.
Above the S+ Pro spring is the Sleep Firms exclusive Boomerang Foam which has been specifically designed and engineered for a compressed mattress. This premium density foam has an extremely high rebound level that does not lose its hardness, ensuring long-lasting firm support. The Boomerang Foam by Dunlop is Geca Certified and treated with Ultra Fresh, which is anti-microbial. It is also a Dunlop Approved foam with the National Asthma Council Sensitive Choice.
‘S+Pro’ 5 Zone Pocket Spring System
The core of this mattress is the exclusive S+ Pro 5 Zone Independent Spring System. Designed for advanced strength and spinal alignment, each Independent Spring is placed explicitly within each of the 5 Zones to ensure it responds and supports the natural contour of the spine and body. For added strength, durability and longevity each spring is individually wrapped in N-100 Medical Grade Fabric which is 42% Stronger than any regular pocket spring.
To achieve its advanced strength, the S+ Pro Spring has a super high spring count spread out across the 5 Zones. This ensures maximum support for the body and spine by breaking the spring into multiple levels. Firm Support is provided for the head, lower back/hips and the feet. Slight pressure relief is then provided for the shoulders and knees for comfort.
Super high spring count:
- King = 1326 Springs
- Queen = 1092 Springs
- Double = 900 Springs
- King Single = 741 Springs
- Single = 576 Springs
Foam Box Edge
To ensure a firm supportive edge to encase the S+ Pro Spring and to prevent any roll-off we also use the Boomerang Foam to create a foam box edge around the full perimeter of the mattress. A foam box technique is something you would find in a traditional retail store pocket spring mattress.
3D Spacer Fabric
For the sides of the mattress, the Sleep Firm uses a 3D Spacer fabric which is designed to ensure maximum air circulation around the sides of the mattress.