Summer Sale Extended deals end...

How big is a super king mattress?

Of the standard mattresses we stock, the super king is the largest mattress size available. The dimensions of our super king size mattresses measure 6'0" wide by 6'6" long or 180cm x 200cm, perfect for larger bedrooms.

What's the right mattress firmness for me?

Finding the right super king size mattress that supports you all night long depends on what sleeping positions you prefer to seep in. Read on to find out what type of mattress tension offers great support and promotes spinal alignment for the way you sleep.

I prefer to sleep on my side

For those who prefer to sleep on their side, we recommend either a soft or medium support tension super king mattress. Sleeping solutions on the softer end of the spectrum will provide cushioning to pressure points such as the shoulders and hips, ensuring healthy spinal alignment for a restful night's sleep. Shop our soft and medium super king mattresses to be on your way to a great night's sleep.

I'm a front/back sleeper

Alternatively, preferred front or back sleepers require a firm or extra firm support tension. A super king mattress with either tension will ensure healthy spine alignment whilst you sleep, as well as total body support and pressure relief. A firm mattress will suffice for either preferred sleeping position, however, if you suffer from joint or back pain then the extra firm super king mattresses will provide the additional support needed to combat aches and pains. Browse our range and shop for a firm or extra firm super king mattress that will provide the extra support and pressure relief you need throughout the night.

I sleep in all positions

Lastly, if you sleep on your side, front and back in the night then a medium firm super king size mattress is best designed for you. A medium firm tension will ensure the sleeping surface is not too firm to support you whilst sleeping on your back or front, and not too soft to do so when you're on your side too. Shop our medium firm options to find the best super king mattress for the way you sleep.

What types of super king mattresses do we stock?

Pocket sprung

A pocket sprung super king mattress is made up of independently moving springs encased in their own fabric pocket. Because each spring moves individually, the mattress surface has the ability to respond independently to your body weight and move with the contours of your body shape, fantastic for pressure relief and great support. Shop our range of super king mattresses with pocket springs to find the option that will supply many years of good night's sleep.

Open coil

For a super king size mattress on a budget, look no further than our range of open coil options. Comprised of a continuous wire that runs up and down the length of the mattress, these cost-effective options are brilliant choices for medium or firmer mattress firmnesses.

Memory foam

A memory foam mattress is undoubtedly one of the most popular kinds of super king mattresses in the market. Memory foam is made up of millions of holes that seep out air when pressure is applied, allowing for the surface to mould to the contours of your body's shape as you sleep. Due to the composition of memory foam, the material retains heat very well, which should be avoided by those who get too hot throughout the night. Similar to memory foam, reflex foam offers a sleep surface that will also mould to your body shape, however, doesn't have heat retention properties like memory foam.


Of all of the mattresses we stock, our latex super king mattresses are certainly the most durable. Comprised of latex derived from rubber trees, the open cell structure of the latex mattress ensures a body moulding, breathable sleeping surface that provides excellent support. Designed to last over 10 years, our latex super king mattresses are certainly worth investing in.


If you're torn between a super king mattress with springs, foam or natural materials, then perhaps the best super king mattress for you is a hybrid option. Combining pocket springs or an open coil spring system with memory foam, reflex foam, latex, geltex or any other comfort layer, you can reap the benefits of both types of super king mattresses.

What mattress fillings are right for me?

Synthetic fillings

If you're affected by hay-fever or dust mite allergies, you may want to opt for a super king mattress with synthetic or polyester fibre fillings. Unlike natural materials, polyester fibres have tight pore sizes which make it difficult for dust mites to move through and build up in the mattress. This means you can get a great night's sleep for years to come with a super king mattress filled with synthetic materials.

Natural material

At Mattressman, we are proud to stock a large variety of natural filling types. Including cotton, wool, alpaca, mohair, lambswool, cashmere and silk, all of which have many benefits such as temperature regulation, being able to wick away excess moisture, insulation, absorption, durability and softness. Whilst many of our natural fillings have breathable properties too, they are not hypoallergenic. The pore sizes of these fibres are much larger than polyester fillings, making it much easier for dust mites to pass through and build up. Therefore, a super king size mattress that has incorporated natural fillings is not best designed for allergy sufferers.

Is there anything else I need to know when shopping super king mattresses?

When you're looking for a new super king mattress, ensuring you have a suitable super king bed is paramount. If you don't have a super king size bed frame, you can shop our fantastic range including upholstered, metal, leather, wooden and ottoman choices. If you want a simple delivery process, many super king size mattresses arrive rolled up and vacuum-packed. The mattress is compressed, rolled up and sealed in vacuum-packed packaging so you can easily manoeuvre the mattress to the bedroom of your choice.
When you shop at Mattressman, you can also make the most of our next working day free delivery on in-stock super king mattresses. We also offer a disposal recycling service at checkout, so we can remove your old bed frames or mattresses and recycle the materials properly. Shop our super king mattresses to find the new mattress designed for the way you sleep, all whilst making the most of our fast delivery too.