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Super King Mattresses

Best Super King Mattresses UK (2023)

Last updated: 31.10.2023 Reading time: 11.5 Min.

Who wouldn't want to sleep like a (super) king? 👑

In the UK, super king mattresses, which measure 180 x 200 cm (6' x 6'6"), are the most common.

But while you may have already decided on the mattress size you want, width and length aren't the only factors you need to consider before making your purchase.

So, in this guide, we'll take you through everything you need to pay attention to before buying your new mattress.

We'll even give you some recommendations for the best super-king mattresses in the UK!

So let's dive straight in 🤿

180 x 200 cm Super King Mattresses

Our top recommendations

Sleep Hero Favourite

Simba Hybrid

The Simba Hybrid mattress is a high-quality pocket sprung mattress with multiple layers of foam.

This award-winning and five-star-rated original mattress by Simba Sleep is a unique hybrid mattress that combines polyfoam, memory foam, high-definition foam, and pocket springs.

The Simba Hybrid is an award-winning hybrid pocket sprung foam mattress by Simba Sleep. 🏆

It features four layers, including:

  • A comfort layer of graphite-infused, open-cell Simbatex foam
  • A core of up to 2000 Aerocoil mini pocket springs across 13 zones
  • A CertiPur stability layer
  • A base layer of no roll-off SupportCore with up to 1000 barrel springs

This is a medium-firm mattress that's an excellent choice for a wide range of sleepers, regardless of body size or preferred sleeping position.

Simba Hybrid mattress
The Simba is one of our favourite hybrid mattresses.

The Simba mattress is supportive enough to prevent a build-up of tension, but also soft enough to allow your body to sink in where necessary.

This allows for optimal spinal alignment. 🦴

The Simba Hybrid mattress comes with an antibacterial hypoallergenic cover designed to maximise airflow.

The cover is also removable and machine-washable - but we'd always recommend making use of a mattress protector to safeguard your mattress. 🧼

The Simba comes with free delivery, a 200-day risk-free trial period, and a 10-year guarantee. 


  Simba Hybrid
Composition: Hybrid mattress with foams, mini pocket springs, and full-size pocket springs.
Firmness level: Medium-firm
Height: 25 cm (10 inches)
Trial period: 200 days
Guarantee: 10 years
What makes this mattress special:  A unique combination of materials; very comfortable for average-weight back and side sleepers; cooling properties
Best Guarantee

Nectar Memory Foam Mattress

The Nectar is a luxurious memory foam mattress suitable for most people and sleeping positions.

This bestselling mattress comes with a revolutionary 365-day trial period and a lifetime warranty.

The Nectar memory foam mattress is one of our favourite mattresses.

It features 3 layers of high-quality, high-density memory foam for optimal spinal alignment, pressure relief, and comfort.

The base layer also has 7 contour zones to enhance its ergonomic design and keep your body in a healthy sleeping position. 📏

This prevents a build-up of tension and allows for orthopaedic support.

Nectar mattress
The Nectar is a medium-firm mattress.

The Nectar mattress comes with a breathable cover that enhances airflow to allow for a cool and comfortable sleep. 💨

Unfortunately, the cover is not machine-washable.

We'd suggest using a mattress protector to safeguard your mattress against stains, spills, and bacteria.

The Nectar mattress comes with free delivery & returns, a revolutionary 365-day trial period, and a "forever warranty". 


  Nectar mattress
Composition: Memory foam with a 7-zone cold foam base
Firmness level: Medium-firm
Height: 25 cm (10 inches)
Trial period: 365 days
Guarantee: Lifetime warranty
What makes this mattress special? Exceptionally comfortable for average-weight & lighter sleepers; lifetime warranty & revolutionary one-year sleep trial.
Best Trial Period

Eve Premium Hybrid

The Eve Premium Hybrid is a hybrid mattress with 5 layers of new generation foam and over 1500 pocket springs.

This high-end mattress promises to support people of all weights and body sizes - and it's perfect for couples!

The Eve Premium Hybrid is the most luxurious hybrid mattress by Eve Sleep.

eve premium hybrid mattress

It combines multiple layers of foams and springs, including:

  • Graphite-infused cooling foam
  • Evecomfort foam that's 30x more breathable than traditional memory foam
  • Open-cell support foam
  • Up to 1666 full-size pocket springs
  • High-resilience base foam

This unique combination guarantees a high degree of comfort in all sleeping positions.

The mattress adapts to the body of the sleeper, allowing for optimal spinal alignment. 📏

The Eve Premium Hybrid is particularly great for people suffering from back pain.

It also has exceptional motion isolation, making it a great choice for couples. 👩‍❤️‍👨

The Eve Premium Hybrid mattress comes with free delivery & returns, a 200-night risk-free trial period, and a 10-year guarantee.


  Eve Premium Hybrid
Composition: Graphite-infused foam, memory foam, full-size pocket springs
Firmness level: Medium-firm
Height: 28 cm (11 inches)
Trial period: 1 year
Guarantee: 10 years
What makes this mattress special? 5 layers of premium comfort & support
Luxury Option

DreamCloud Luxury Hybrid

The DreamCloud Luxury Hybrid mattress is a 5-layered premium mattress that combines memory foam with pocket springs.

This is a high-quality mattress designed for enhanced breathability, comfort, and support. 

The DreamCloud Luxury Hybrid is a premium mattress from the same company that's brought you the Nectar memory foam mattress.

It combines high-quality memory foam with full-size pocket springs (called ActiveEdge coils), each measuring 15 cm (5.9 inches).

DreamCloud luxury hybrid

This is an orthopaedically designed mattress with medium-firm support to help eliminate back, neck, and shoulder pains.

The mattress offers enhanced breathability to help keep you cool and refreshed all night long. ❄️

It also has low motion transfer and great edge support, making it a great choice for couples.

The DreamCloud Luxury Hybrid mattress is 28 cm (11 inches) thick and stands out as a key feature in any bedroom. 🏆

The mattress comes with free delivery & returns, a remarkable 365-night risk-free trial period, and a lifetime guarantee.


  DreamCloud Luxury Hybrid
Composition: Memory foam, pocket springs
Firmness level:  Medium-firm
Height: 28 cm (11 inches)
Trial period: 365 days
Guarantee: Lifetime warranty
What makes this mattress special? Fantastic premium-choice option suitable for most; revolutionary trial period and a lifetime guarantee.

How we test products

Our mission is to take the guesswork out of finding the perfect sleep products.

We've dedicated hundreds of hours to testing mattresses and sleep accessories, and rely on a team of testers of differing weights, temperature preferences, and sleeping positions to evaluate each product. 

Tested products are granted the Sleep Hero tested stamp of approval, a mark of our review's reliability.

To learn more about our testing process, check out our methodology page.

If we haven't personally tested a product, please be assured that we invest significant time and energy into scouring the UK market and researching the best recommendations, and we work with a team of sleep experts who review our articles, ensuring that the insights we provide are not only relatable but also reliable.

Why choose a super king mattress?

The 180 x 200 cm super king mattress is a luxurious choice.

It's great for couples, but you'll also be comfortable if your small child or dog hops into bed with you. Or cat, hamster, frog, bunny - all pets are welcome in the Sleep Hero world 🐶🐰🐸

If you're looking at the height of your next super-king-size mattress, consider the following:

  • Foam mattresses should have a height of at least 15 cm (5'9").
  • Spring mattresses should have a height of at least 20 cm (7'8").

Let's take a closer look at who would do well with a super king mattress.

Size: 180 x 200 cm
For whom? Singles, couples, couples with a child or pet
Materials used? High-quality materials such as latex, memory foam, cold foam, and springs

A luxurious choice for couples

The 180 x 200 cm super king mattress is a luxurious choice for couples.

This mattress is definitely wide enough to allow both partners to sleep comfortably - and even toss and turn if need be.

Your restless partner definitely won't keep you up at night - provided you have a good mattress with low motion transfer.

Low motion transfer means that the mattress will effectively absorb movements at the point of impact and not allow motion to travel through the mattress.

This is a win if you're sharing your bed with someone!

The super king mattress is also big enough to allow children or pets to hop into bed with you.

You'll all still have enough room to move and be comfortable.

Bring on the family cuddles and popcorn 🍿

An option for bigger builds

If you're of larger build or body size, then the super king mattress is also a good option.

You'll have more than enough space to move, and you can still share your bed with a partner - and sleep comfortably!

Ultimately, a good night's sleep is what it's all about 😄

Great for singles who like their space

No rulebook says singles can't splurge and invest in this luxurious mattress.

It's not necessary, of course, and singles will have more than enough space on the 150 x 200 cm king mattress, but if you have space and the budget available, then splurge away.

UK mattress sizes

Different types of mattress materials

There are hundreds of 180 x 200 cm super king mattresses available, all made from different materials, with different firmness levels, and available at different budgets.

Which super king size mattress, then, is the best one?

There's no definite answer to this - but there definitely is a mattress that's best for you.

We'd advise that you pay attention to the material used, degree of firmness, delivery conditions, and money-back guarantees.

Below you'll find an overview of the different types of mattress materials that can be used for 180 x 200 cm super king mattresses.

Super-king foam mattresses

There are a large variety of foam mattresses available, including pressure-relieving memory foam, cold foam, and geltex or gel foam.

Most high-quality foam mattresses are made of a combination of these and include numerous foam layers.

For example, a mattress may be constructed like this:

  • A top comfort layer of gel foam, which is less heat-retaining than memory foam and provides a comfortable feel.
  • A core of memory foam, which has body-contouring properties, relieves pressure points and provides a cushiony feel.
  • A zoned base layer of cold foam, which is firmer, offers support and provides stability.

A mattress of this construction will have great ortho properties and may be recommended as an orthopaedic choice.

Combining different foam layers will allow a mattress to merge the best properties of all the foams used.

Many of the bed-in-a-box mattresses that we recommend are foam-based mattresses.

If you're not a hot or restless sleeper, we would recommend opting for a super king memory foam mattress.

Pros and cons of foam mattresses

Advantages Disadvantages
  • Suitable for people of all ages.
  • Recommended for all sleeping positions.
  • An orthopaedic choice that can be good for people with back and neck pain.
  • Provides a warmer sleep, which is good for people who easily feel cold at night.
  • Suitable for adjustable slatted bases.
  • Not suitable for people who sweat a lot at night or those who prefer a cooler sleep.
  • Can be difficult to move on and not suitable for restless sleepers.
  • Foams are not natural materials and can release a chemical odour when first unpacked.

Super-king latex mattresses

While technically a latex mattress is also a foam mattress, its properties are a little different.

In contrast to memory foam, for example, latex foam offers a much cooler sleep and is easier to move around on.

This makes it a great choice for couples and restless sleepers.

Natural latex mattresses are also a great environmentally-friendly choice.

Natural and organic mattresses may be more expensive, but they don't contain any harmful chemicals and are often sustainably sourced.

Also, a mattress with natural fillings is a hypoallergenic choice that's great for people prone to allergies.

Latex mattresses are generally quite a bit more expensive than other foam mattresses.

Pros and cons of latex mattresses

Advantages Disadvantages
  • Great for people who like to sleep on their side.
  • Good for people who easily feel cold at night.
  • Suitable for adjustable bed bases.
  • Reduce back and neck pain.
  • Ideal for restless sleepers.
  • Can be an environmentally responsible choice if opting for natural latex.
  • Not suitable for people who sweat a lot at night.
  • The mattress must be regularly cleaned and rotated.
  • Latex mattresses are. more expensive - but also much more durable.

Innerspring mattresses

Innerspring mattresses, in general, are characterised by their firmness, stability, and great breathability.

Springs create natural ventilation channels, allowing for enhanced airflow.

This allows for an overall cooler sleep, which works well for heavy sweaters.

Spring mattresses are well-suited to people of larger size, back sleepers, and stomach sleepers.

However, there are many inferior coil mattresses available, which should be avoided.

Instead, we would recommend going for pocket sprung mattresses, where springs are individually wrapped.

This enhances point elasticity, minimises motion transfer, and allows for great comfort.

Pocket sprung mattresses are also much more durable.

You'll also commonly find springs in hybrid mattresses.

These combine high-quality foams and springs to offer the best of both - great comfort, stability, support, and breathability.

Pros and cons of spring mattresses

Advantages Disadvantages
  • Ideal for people who like firmer mattresses or heavier-weight people.
  • Great for people who sleep on their stomach or back.
  • Good for people who prefer a cooler sleep or those who sweat heavily at night.
  • Ideal for restless sleepers.
  • Great for bargain hunters.
  • Not suitable for those who feel cold easily, prefer a softer mattress, or pure side sleepers.
  • Can't be placed on adjustable slatted frames.
  • Older and inferior models tend to form dents.

Criteria to consider before purchasing a 180 x 200 cm super king mattress

Investing in a new mattress isn't always an easy task.

You want to make sure that you're investing in a high-quality product.

Here are some key criteria to look out for before purchasing your new 180 x 200 cm super king mattress.

Quality & density of the materials

As you've discovered, there are many different mattress materials available.

Some are cheaper. Some are more expensive.

One way to determine whether or not the mattress you're considering is of high quality is to look at the density of the foams used - or, in the case of springs, the number of springs in the mattress.

The higher the density, the more durable the mattress is and the longer its lifespan.

You can use the below table as a rough guide:

Density (in kg/m³) The expected lifespan of the mattress
Up to 25 Up to 2 years
30 Up to 3 years
35 5 - 6 years
40 6 - 8 years
50 - 60 10 years or longer

Stability, support, and firmness

Your mattress doesn't need to be firm to offer the right amount of stability and support.

A soft mattress, like the Emma Original, for example, still offers amazing support.

It all depends on the combination of materials.

Regardless of which material you go for, your mattress must be able to offer sufficient stability and support to keep your body in a healthy alignment while you sleep.

This is particularly important for side sleepers: Your hips and shoulders need to sink in a little more deeply while the rest of your body remains well-supported.

This will allow for optimal spinal alignment and is crucial to prevent lower back pain and stiffness.

Mattress firmness, in contrast, is largely a matter of personal preference.

That said, factors like age, body weight, and preferred sleeping position do play a role.

In general, heavier-weight people and back sleepers will require a firmer mattress and side sleepers, and lighter-weight people will require a softer or medium-firm mattress.

Firmness can be difficult to ascertain, so we've created a Sleep Hero firmness scale to help you.

Spinal alignment

Risk-free trial periods

No matter what pesky sales assistants may tell you, there is no way to know whether a mattress is right for you simply by lying on it for a few minutes.

It can take the body up to 30 days to get used to a new mattress.

This means that you need to give yourself the chance to really experience the mattress and see if it's right for you.

Most bed-in-a-box mattresses purchased online offer a risk-free trial period, which gives you the chance to try out the mattress in the comfort of your own home.

And if you're not happy?

Simply return it for a full refund 🥳

Eve Premium hybrid mattress delivery

Eve Premium Hybrid mattress

Sharing your super king bed with a partner

Of course, it's entirely likely that you and your partner want different types of mattresses.

What if you want a soft mattress and your partner wants a firm mattress?

What if you easily feel cold at night, but your partner is a very heavy sweater?

This can definitely create tension.

Sleep, after all, is vitally important and should not be compromised on.

But there are solutions.

Customisable mattresses

Customisable mattresses are becoming more and more popular.

Here, you can set individual preferences for each half of the mattress.

So, for example, your side of the mattress may be soft, but your partner's side may be firm. Or your side of the mattress may be made of memory foam, but your partner's side will feature latex foam.

This way, you'll both get exactly what you want.

Combining two single mattresses

You can also purchase two 90 x 190 cm single mattresses and place these next to each other.

This is a good option if you and your partner differ greatly in size and body shape and require two completely different firmness levels.

You can also easily bridge the gap between the two mattresses by investing in a bed bridge or a mattress topper.

That said, purchasing two smaller mattresses will end up costing you approximately 30% more than simply purchasing a standard super king size mattress.

Affordable super king mattresses

180 x 200 cm super king mattresses can be quite expensive.

They are very large, after all.

But, if you're investing in a mattress of this size, then it really is worth focusing on the actual investment part of it.

A high-quality mattress with high-density foams is likely to last you a very long time.

You're looking at up to 10 years or more for a good mattress.

In the long-term, it definitely is worth spending a little bit more time, effort, and money in making your choice.

But, this does not mean you need to invest in a superbly expensive brand like Tempur.

Many high-quality brands are available at good prices 💵

And you can get even better prices by applying discounts and coupon codes.

The biggest online mattress brands - like Eve, Emma, and Nectar - all offer regular promotions, where you can save up to 50%.

You'll find all the current promotions on our discounts page.

All you need to do is apply the coupon code upon checkout and, voila, instant savings!

Can I get super king mattress toppers?

Yes, there are mattress toppers available in the super king size.

Mattress toppers are a great option if your bed is a little too firm and you want to enhance comfort 😴

We've recommended a few of our favourites below.

Super king bed frames

Of course, if you're investing in a super king mattress, you'll also need to purchase a super-king-size bed frame.

There are no right or wrongs when it comes to bed frames, and your super king mattress will do well on a divan base, ottoman bed, or slatted bed frame.

You'll find our top recommendations below.


In general, 180 x 200 cm super king mattresses will be suitable for most sleepers.

There are many different models available but remember that each mattress has its own particularities, advantages, and disadvantages.

When choosing your 180 x 200 cm super king mattress, we recommend that you consider quality over price.

You’re planning on keeping your mattress for numerous years - up to a decade - and it is better to invest in a higher-quality model.

All of the super king mattresses we've recommended are good choices.

Frequently asked questions

  • What is a super king size mattress?

    A super king-size mattress is one of the most commonly available mattress sizes in the UK. 

    Super-king mattresses have dimensions of 180 x 200 cm (6' x 6'6").

  • Should I use a super king mattress protector?

    Yes, we always recommend using a mattress protector to extend the lifespan of your mattress.

    A waterproof mattress protector will protect your mattress against spills, stains, dirt, and bacteria.

  • What other mattress sizes are available in the UK?

    The most common mattress sizes in the UK include:

    • Single mattresses: 90 x 190 cm (3’ x 6’3”)
    • Small double mattresses: 120 x 190 cm (4' x 6'3")
    • Double mattresses: 135 x 190 cm (4’6” x 6’3”)
    • King mattresses: 150 x 200 cm (5’ x 6’6”)
    • Super-king mattresses: 180 x 200 cm (6’ x 6’6”)
    • Emperor mattresses: 200 x 200 cm (6’6” x 6’6”)

    Some brands will also have custom sizes available.



Content Director & Partner Relations

My mum calls me "bear" because I like to sleep so much. I never thought that, one day, I'd be a certified sleep coach and apply my skills more widely. Can you tell that I've found my calling? 

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