Sleep Guide

How to choose the right mattress for you


Size Guide

Single, Long Single and King Single

Single, Long Single and King Single mattresses are ideal for kids however we recommend a long or king single mattress for children to allow extra legroom for growing bodies.

Long singles are also often used for adjustable beds either individually, or with two side by side to form a conventional Queen size bed. The latter option is also great for couples who prefer different mattress feels. 

Single: 92cm x 188cm

Long Single: 92cm x 204cm

King Single: 107cm x 204cm


Double mattresses 

Double mattresses are favourites with teenagers and young adults. This size mattress can sleep couples, though it may be a tight squeeze.

Double: 138cm x 188cm


Queen mattresses 

Queen mattresses allow adequate personal space for individuals and couples and usually fit quite comfortably into a regular sized bedroom.

Queen: 154cm x 204cm


King mattresses 

King mattresses are a luxury that everyone should indulge in if space allows. They are very spacious and make you feel like you are sleeping in a luxurious hotel bed every night of the week. The extra room is also convenient for mums and dads with sneaky kids who jump into bed with them during the night.

King: 183cm x 204cm

Custom made-to-order mattress sizing is available. Please contact us for further information.



Comfort is subjective. It is very difficult to assume that a mattress will be comfortable for another person just because it is comfortable for you. This is why, at Sleepdoctor, we offer three different comfort levels for each mattress we sell. Our comfort levels provide optimal comfort and support ensuring that everyone has a comfortable night's sleep on one of our mattresses. Our three comfort layers are:


Plush mattresses are the softest in each range. They yield more readily to pressure or weight and provide a higher degree of contour, allowing the body to sink luxuriously into the mattress. The quilt top used on a Plush mattress is created with greater foam layers and spacing between the stitching, to give a less resistive top resulting in greater ability for the mattress to mould to the body, perfect for those who seek a softer, more luxurious sleep.


Medium mattresses usually contain a higher density foam with fewer layers compared to Plush Mattresses, in order to reduce the sinking in the surface and achieve a feel that it that little bit firmer. Unlike Firm mattresses, Medium mattresses still aim to provide some yielding and offer a great middle ground for those who need great support but still want added comfort. Medium mattresses also offer a great compromise for couples with different firmness preferences.


Firm mattresses have a firmer surface feel compared to the Plush and Medium. Dense, thicker foams and tighter sewing patterns in the quilt allow Firm mattress to maintain surface stability under the sleeper’s body weight while also contouring to the body to a degree. Firm mattresses usually have a lower profile than Plush mattresses. They are best suited to individuals who need the added support provided by denser foams.


Personal comfort versus your body's needs – How to choose the right mattress firmness for you

Your body requires a stable, supportive sleep solution to allow you to maintain a natural, optimal posture while you are sleeping. The comfort levels we offer provide you with the balance of selecting your preferred firmness level without compromising your body's needs.

A very soft mattress does not provide your body with optimal support. Your body sinks into the mattress with very little resistance, resulting in poor neck and back positioning and subsequent neck and back pain. All Sleep Suite mattresses provide adequate support and stability however if you do prefer a softer more luxurious sleep we recommend our soft mattresses.

Alternatively, a very firm mattress could potentially create negative pressure in specific areas of the body, resulting in aches and pains and an interrupted sleep cycle. Our firm mattresses provide the right balance of stability and support without causing aches and pains and are recommended if you prefer to sleep on a firmer mattress.

If you prefer the equilibrium a classic feel provides, we recommend you check out our medium mattresses.


What is a Body Signature?

Your body signature is the impression your body makes on the surface comfort layers of the mattress where the weight of your body (your hip area) has been concentrated on your mattress. Body signatures are normal and indicate that your mattress is adapting and conforming to your body shape. Your body signature is your body making your new mattress more comfortable. Like wearing in a new pair of shoes, you wear in your new mattress for greater comfort and support.

It is important to note that it takes approximately 30 consecutive days of sleeping on your new mattress for your body to adjust to the feel and support of a new sleep system. It is normal for your body signature to cause a slight dip in your mattress and the middle area of your sleeping surface to be slightly raised.

Can you have too much body signature?



Yes. Poor quality or old slat bases inevitably sag in the middle. This exaggerates your body signature to the detriment of your postural well being. When using a slat base, make sure the slats are in good condition and no more than 70mm apart (50mm is ideal) and no more than 25mm thick otherwise it may not be supporting your new Sleep Suite mattress correctly. A good slat base also has a centre rail running from head to foot as well as at least one centre leg offering adequate stability and support for your mattress.


How to care for your mattress

What to do:

There are a few small things we recommend you do to keep your mattress feeling comfortable, fresh and feeling great.

To maximise mattress performance, you should equalise body signatures by rotating your mattress regularly. It is recommended you rotate your mattress end to end every two weeks during the first three months of use. You should then rotate your mattress monthly thereafter. This allows your mattress to adequately adjust to your body weight.


If you have purchased a Sleepdoctor base, check the bed legs every six months and tighten if necessary. Gaps between bed slats should not exceed 70mm. Occasional airing of your mattress is beneficial.

Ensure you are using stable bedding furniture (e.g. slat base, bedroom suite) to prevent damage to your Sleepdoctor mattress. Your mattress manufacturer's guarantee covers manufacturing faults but does not cover damage caused by suboptimal bedding furniture.

Always use a mattress protector with your Sleepdoctor mattress. This keeps your mattress clean and dry and ensures your mattress guarantee is not void due to your mattress becoming soiled.

When purchasing a new mattress you should consider replacing your old base as well. If you do not, it may appear that your new Sleepdoctor mattress is sagging when the problem actually lies in an old base providing inadequate support for your new mattress. For better performance of your mattress, we strongly recommend the use of a Sleepdoctor base that has been specifically designed for your mattress to deliver the correct support for you while you sleep.


What not to do:

Always carry your mattress on its side. Do not attempt to carry the mattress on your own. Handles (where fitted) are only used for positioning the mattress and not for lifting or carrying.

Do not fold your mattress; this will damage the edge support wire. We recommend you gently flex the mattress when attempting to pass it through a doorway.

Do not jump on your mattress; this will void your 90-day Comfort Guarantee and Manufacturer's Guarantee.

Do not leave your mattress or base in the weather.


Pillow Talk

Make sure to consider the position you sleep in when choosing a pillow as pillows can be just as important as your mattress for Spinal Alignment. A pillow that is too high or too low can strain your neck and leave your spine out of proper alignment.  Side sleepers, for example, may need something higher for neck support, while back sleepers may find a lower profile more comfortable.

At Sleepdoctor, we provide a range of pillows designed with different materials; shapes, profiles and density’s to ensure you are able to find the perfect solution for you:

Contour pillows can be a good option for both back and side sleepers. The contour means that the head is cradled comfortably while the neck is properly supported. With one side often designed higher, side sleepers are offered the proper support while back sleepers can use the opposite side for a lower profile if this is more comfortable.

Traditionally shaped pillows with tapered sides usually suit back and stomach sleepers and can provide excellent neck support when constructed from the correct materials. Memory foam and latex are excellent choices for those who need added pressure point relief - as both contour to the natural shape of the head and neck, relieving pressure, but firming up after the body has settled ensuring proper support.

Pillow Range