A recent survey revealed up to 45% of Australian adults experience inadequate sleep ¹ .

And, while buying the right mattress can solve some people's sleep problems, shopping for a new mattress can be overwhelming. Part of the problem is there is too much choice, and every brand says its mattress is the best and the most comfortable.    

It can be challenging to know which brand to trust. It is also difficult to know which mattress is right for you. 

At KING, we sell premium modular mattresses crafted from high-quality materials. The modular design allows you to customise your mattress to deliver personalised comfort and support. While this is how we choose to craft our mattresses, we also recognise many Australian brands craft quality mattresses differently from us.   

It is important the mattress you buy is right for you, stands the test of time and delivers exceptional comfort and support. While we're confident our Sleep+ Mattresses are among the best on the market, we feel it is important you are informed about other mattress options. We have created an honest comparison of some of the best Australian mattresses under $4,000.  

This article will help you know what to look for in a new mattress, understand mattress terminology and allow you to make an informed decision about which mattress under $4,000 is best for you. 

 

Featured above is the Neo Bed with the KING Sleep+ Mattress 8000. 

 

What do you look for when choosing a mattress?

 

Have you ever asked or Googled, 'what should you look for when buying a mattress?' 

Buying a mattress is complicated. There are a lot of jargon words, and it can be difficult to understand the complex mattress terminology.   

Before comparing different mattresses, it can help to understand the different mattress materials, technology and features, so you know what to look for. 

• Memory foam – the mattress features varying layers of high-density foam.  
• Latex – resembling a foam material, latex can be in a synthetic form or naturally processed from the liquid of rubber trees.  
• Innerspring – the mattress core features a network of steel coils and a metal wire system surrounded by layers of foam and cushioning.  
• Pocket springs – the mattress core features spring coils individually encased in a fabric pocket.  
• Hybrid – combines memory foam or latex with spring coils. 
• Maximum pressure relief – a mattress offering maximum pressure relief will distribute your weight evenly to ensure your body is supported.  
• Partner disturbance and zoning – the springs or foam are zoned across the mattress to help minimise motion or partner disturbance. 
• Airflow and breathability – temperature regulation technology and perforated comfort layers or mattress covers promote airflow and breathability, which helps reduce heat retention.  
• Firmness – mattress firmness is how soft or firm your mattress is. 

 

Investing in a comfortable and supportive mattress is one of the simplest ways to promote restful sleep. Pictured above is the Bellaire Bed with Lume Smart Lights and Smart Crescent Tables. 

Koala mattress review

 

As one of the first mattress in a box brands, Koala is a well-known and popular Australian mattress company. 

• Price – a Queen Koala Mattress is around $1,099, the Calm As® Mattress is around $1,799 and the Soul Mate® Mattress is $2,899. 
• Materials and construction - Koala mattresses feature layers of zoned memory foam.  
• Warranty and risk-free trial - 120-night trial period and 10-year warranty. 
• Delivery options - Koala provide free delivery throughout Australia and a same-day delivery service in metro areas for orders made before 3pm. 
• Showrooms –  eCommerce store only. 

 

Customisation options & main features

 

All Koala mattresses feature a reversible foam layer allowing you to adjust your mattress firmness. With zoned foam, Koala integrates Zero Disturbance® technology into their mattresses for no partner disturbance or motion transfer.  

The seven-centimetre comfort layer on the Koala Mattress is engineered with TENCEL® Lyocell fibres to absorb and releases moisture. This also promotes air flow and breathability. With three foam layers, the Koala Mattress is 25 centimetres thick and the most economical mattress by the brand. 

The Calm As® Mattress features a one-centimetre quilted plush cover and five foam layers, including a double-sided comfort layer. You can reverse the top comfort layer to provide medium-firm support or firm support. The comfort layer is engineered with COOLMAX® technology, which has moisture-wicking capabilities and helps keep your body cool.  

With six support foam layers, a two-centimetre quilted plush cover and a nine-centimetre comfort layer, the Soul Mate® Mattress is 33 centimetres thick and the most expensive Koala mattress.  

The design features five-zoned adaptive foam springs for additional support and to help relieve pressure. The thick comfort layer has been engineered with phase-change technology to help regulate body temperature, and a bamboo charcoal layer with ventilation holes promotes air flow. 

 

 

Emma mattress review

 

Founded in Germany in 2015, Emma has expanded its popular boxed mattresses to 21 countries, including Australia. 

• Price - the Emma Comfort Mattress is $1,399 for a Queen and the Emma Diamond Hybrid Mattress is $2,399. 
• Materials and construction - the Emma Comfort Mattress consists of just foam and Emma Diamond Hybrid combines foam and pocket springs.  
• Warranty and risk-free trial - 120-night trial period and 10-year warranty. 
• Delivery options - free delivery and returns throughout Australia. The company also offers same-day delivery to metro areas on orders placed before 10am on weekdays. 
• Showrooms - eCommerce store only. 

 

Customisation options & main features

 

Emma mattresses feature a multi-layer system with different foam densities and comfort layers. The core combines a supportive polyether foam and pressure-relieving point-elastic foam to create a 25-centimetre-thick mattress.     

The Emma Comfort is a medium-firm mattress with two foam layers. The Airgocell® Foam is for minimising motion disturbance and moisture-wicking. The HRX Foam is zoned in different densities to provide support.  

The Emma Diamond Hybrid mattress consists of four layers. The Diamond Degree® Graphite Foam is designed to dissipate excess heat and keep your body at the optimal temperature. The Comfort HRX Foam adapts to your body for pressure support, while the zoned Supportive HRX Foam provides additional back support. The spring core promotes air flow and improves the breathability of the mattress. 

Both mattresses feature a removable and washable cover made of a climate control fibre that regulates humidity and draws out moisture. 

 

A mattress featuring zoned foam or springs will intuitively respond to your weight to maximise pressure relief and minimise partner disturbance. Pictured above the Neo Bed with the Sleep+ Mattress. 

 

 

Sleeping Duck mattress review

 

With a customisable foam comfort layer, the Sleeping Duck mattress can be tailored to suit your comfort and support preferences. The Sleeping Duck mattress is another popular boxed brand.  

• Price - the SD MACH II mattress in a Queen is around $1,649.  
• Materials and construction - the mattress features zoned pocket springs and a variety of foam layers with different densities. 
• Warranty and risk-free trial - 30-night trial period and a 10-year warranty. 
• Delivery options - with the free standard delivery service, your mattress is delivered to your front door. With the premium delivery service, the courier will deliver your mattress to your chosen room, unpack and remove the packaging material. 
• Showrooms – One Showroom in Melbourne. 

 

Customisation options & main features

 

The Sleeping Duck mattress features four precision-engineered layers, including a customisable foam layer available in four different firmness densities.    

The removable and washable BreatheTech mattress cover is engineered from vortex-spun bamboo yarn to promote maximum breathability and moisture wicking.  

The AntiGravity surface foam layer is made from a high-density engineered foam to create a feeling of weightlessness and limit partner disturbance. 

Named the ComponentAdapt® system, the Sleeping Duck mattress features a customisable foam layer with four firmness levels. You can customise each side of the mattress in a firm or medium layer, which can be different on each side. The ComponentAdapt® system also features precision pads. Available in firm, medium, soft and extra firm densities, six precision pads can be zoned across your mattress to provide personalised comfort and support.  

The mattress core features a multi-zoned steel spring system made from twice-tempered steel springs.

 

 

Pair your mattress with a pillow headboard that provides the perfect support for lounging and resting against. Pictured above the Serenade Storage Bed. 

 

Ecosa mattress review

 

Ecosa mattresses are made using recycled materials, feature machine washable covers, and are delivered in a box. 

• Price - the Vital Mattress is around $950 for a Queen, the Ecosa Mattress® is around $1,150 and the Pure Mattress is around $2,225. 
• Materials and construction - the Vital Mattress is a hybrid of memory foam and pocket springs, the Ecosa Mattress® features five layers of ergonomic support memory foam and the Pure Mattress is a hybrid of micro coils, latex and pocket springs.  
• Warranty and risk-free trial - 30-night trial period and a 15-year warranty. 
• Delivery options - free delivery Australia-wide and same-day delivery in metro areas on orders made before 1:30 pm. 
• Showrooms - eCommerce store only. 

 

Customisation options & main features

 

Ecosa's three mattresses feature different materials, benefits and customisation options. 

The Vital Mattress is the most economical mattress Ecosa sells. The design features four layers of memory foam, a seven-zoned pocket spring system, and an environmentally friendly OceanCycle® Cover.  

The Ecosa Mattress® features a reversible foam layer allowing you to adjust between medium, medium-firm, and firm support. The mattress is engineered with multiple foam layers and does not include any springs. The bottom Ergonomic Support Foam layer helps align the spine and support pressure points. The ECO-Tex Memory Foam layer is spongy and bouncy similar to latex, and the G-7 Gel Memory Foam layer is infused with gel particles for temperature stabilisation. The mattress is topped with a removable Tencel™ Cover, promoting air flow and breathability. 

The premium mattress in the collection, the Pure Mattress features the OceanCycled® Cover and a  BounceTech™ latex foam layer for breathable comfort with medium firmness.  

The mattress core also features a high-density TALALAY™ latex layer for additional support and the micro coil system to distribute weight evenly, promote air flow, and relieve pressure. The zoned pocket spring system helps limit partner disturbance and reduce joint stress by promoting correct spinal alignment. 

 

Sleep+ Mattress 6000 features a 75-millimetre-thick Comfort Layer and the standard KingCell®  Pocket Spring Core Base. 

 

The Sleep+ Mattress - how does KING compare against the competition?

 

The KING Sleep+ Collection features four modular mattresses; the Sleep+ Mattress 3000, the Sleep+ Mattress 6000, the Sleep+ Mattress 8000 and the Sleep+ Mattress 9008. 

 

Price of a KING mattress

 

As premium modular mattresses, a KING mattress is more expensive than other mattresses in this comparison.  

The Sleep+ 3000 Mattress is priced at $2,980 for a Queen. We also have the following mattresses in our collection which are priced above $4,000: 

• Sleep+ Queen Size Mattress 6000 - full price from $4,980 
• Sleep+ Queen Size Mattress 8000 - full price from $6,980 
• Sleep+ Queen Size Mattress 9008 - full price from $8,980 

During sale periods, we may offer up to 50% off our product ranges. Throughout these periods, our Queen Sleep+ 6000 and Sleep+ 8000 mattresses may be priced below $4,000, offering excellent value. 

 

Materials and construction 

 

With zoned KingCell® Pocket Coil Springs and high-density memory foam, the Sleep+ 3000 Mattress is a hybrid design.  

 

Customisation options & main features

 

Designed to deliver customised comfort and modular sophistication, the Sleep+ 3000 Mattress features an integrated Comfort Layer with dual comfort levels and zoned KingCell® Pocket Coil Springs for pressure relief support and comfort. 

Individually wrapped and zoned, the KingCell® Pocket Coil Springs are divided into soft and firm zones to intuitively respond to your body's weight and shape for optimal support. 

Crafted with gel memory foam, the reversible Comfort Layer offers medium support on one side and firm support on the other. Both sides promote maximum air flow and distribute your weight evenly across the mattress for a comfortable sleeping experience. 

 Further, the Sleep+ 3000 Mattress features a removal and washable Fit Cover. Engineered with premium stretch fabric, the soft and breathable cover offers additional comfort and air flow enhancement. All mattress components are encased in the Uniflex, which provides structural integrity for the walls of the mattress while remaining flexible and supportive. 

 

All mattress components on a Sleep+ Mattress connect to the Uniflex with a zip allowing easy access for cleaning and reversing the Comfort Layer. 

 

Warranty and risk-free trial

 

KING mattresses have a 30-day trial period and a 15-year warranty (subject to terms) according to a pro rata schedule. 

 

Delivery options

 

At KING, we have an express delivery and deluxe delivery service available. 

For metro areas, express delivery costs $125 and our couriers will deliver your mattress to your door. With the express delivery, our courier will not enter your home, unpack the mattress, or remove your old mattress.  

With the deluxe delivery service, which costs $195 for metro areas, we will deliver your mattress to your chosen room, install your mattress and remove the packaging material.  

To deliver a mattress to outer metro areas and regional areas KING work with third party carriers to offer delivery Australia-wide. When you purchase your mattress, we will provide you with a quote for the delivery.  

As a KING Mattress is custom-made, the manufacturing process only begins once you have finalised your order. 

We do not have ready-made or in-stock mattresses, which contributes to longer delivery times. 

KING delivery times for a Sleep+ Mattress are:  

• Metro delivery (Sydney, Melbourne, Brisbane, Gold Coast, Canberra) - standard delivery lead time is between 12-14 weeks. 
• Metro delivery (Adelaide and Perth) - standard delivery lead time is 14 weeks. 
• Regional delivery - standard delivery lead time is up to 14 weeks. 

 

Showrooms

 

KING has 17 Showrooms across Australia, including seven in NSW, four in Victoria, two in Queensland, one in the ACT, one in South Australia and two in Western Australia. 

 

The KING Bedroom Collection features the Sleep+ Mattress and a curated collection of beds including Jasper, featured above in Whiteley Riverstone. 

 

Find your perfect mattress

 

While a new mattress is a significant investment and key furniture decision, investing in the right mattress can help you sleep better². 

As with any major furniture investment, you will benefit from reading reviews, researching popular brands and visiting Showrooms. To purchase a Sleep+ Mattress, you can visit a KING Showroom, shop online, or book a consultation to speak with one of our experts who can assist you with customising your mattress for the perfect night's sleep.  

Having learnt about mattress materials and compared some of Australia's leading mattress brands, you can make an informed decision about your mattress investment. We highly recommend lying down on different mattresses to really experience the comfort and support each mattress offers. 

While many mattress retailers offer risk-free trial periods, not all mattress retailers have Showrooms, and this is something you may need to consider when looking for a mattress that's right for you. 

Alternatively, if you need to know more about the Sleep+ Mattress Collection, you can read our KING mattress comparison. And, if you are still unsure about which mattress is right for you, read this mattress buying guide for more information on mattresses.   

 

Disclaimer: 

In this article we list brands and products not affiliated with KING. All information including pricing and product details, was accurate at the time of writing and may change without notice. 

The following registered trademarks are owned by companies or brands that are not affiliated with KING in any way. 

Lenzing Aktiengesellschaft or Lenzing Group are the registered owners of TENCEL®. 

Koala Sleep Pty Ltd are the registered owner of Calm As®, Soul Mate® and Zero Disturbance ®. 

The LYCRA Company UK Limited are the registered owner of COOLMAX ®. 

Emma Matratzen GmbH are the registered owners of Airgocel ®. 

Emma Sleep GmbH are the registered owners of Diamond Degree®. 

ECOSA GROUP PTY LTD are the registered owners of Ecosa Mattress®. At the time of publishing this article, the ECOSA GROUP PTY LTD applied to register TALALAY™ and the application was under examination. 

Sleeping Duck Pty Ltd are the registered owner of ComponentAdapt®. 

OceanCycle Inc are the registered owners of OceanCycle®.