Super King Size Mattresses

Super by name and super by nature, our super king mattresses are the largest we sell and offer the ultimate in comfort and support. To help make your buying journey easier, we've compiled and answered some of the most frequently asked questions about these fantastic mattresses!

A super king-size mattress measures 6' x 6'6" or 180cm x 200cm, roughly 30cm or 12" larger than a king-size mattress. You might also hear them referred to as a 6ft mattress, designed to fit onto a 6ft bed frame. It's important to note that a 6ft mattress does not refer to how long it is, but how wide – they are 6 feet wide but are actually 6 feet and 6 inches long!

Want to learn more about the various mattress sizes available? Our mattress size guide has plenty of additional information to help you make the right choice.

We have a variety of super king mattresses available to buy in our most popular types, including:

Super king orthopaedic mattresses

These are designed to help alleviate lower back pain by encouraging a correct spinal alignment throughout the night and tend to be firmer. As such, a super king-size orthopaedic mattress will support your back whilst giving you plenty of space to sleep!

Super king memory foam mattresses

Looking for custom support, even in a mattress as big as a super king? Look no further than a super king memory foam mattress, which uses high-tech memory foam created by NASA. This foam uses your body heat to contour to your body for personalised support.

Super king pocket sprung mattresses

A super king mattress is excellent for couples, as its large size means you're less likely to be woken up by movement. If you want to get the ultimate sleep, invest in a super king pocket sprung mattress, as thousands of individually wrapped pocket springs work independently to reduce movement.

Super king open coil mattresses

Return to the classics with a super king open coil mattress, also called a traditional or Bonnell spring mattress. This mattress type features an interlinked series of springs inside that distributes your weight evenly across the bed.

Super king latex foam mattresses

Latex foam is a great choice if you're looking for something that will offer custom support and is also hypoallergenic. A super king-size latex foam mattress features naturally sourced latex that contours to your body, giving you high levels of support!

Are you not sure which type will suit you best? Read our mattress buying guide to determine which one is best for you.

Our 6ft mattresses come in a range of firmness levels, ensuring we have a mattress that will suit every sleeper. These firmness ratings include:

• Soft super king-size mattresses
• Soft/medium super king-size mattresses
• Medium super king-size mattresses
• Medium/firm super king-size mattresses
• Firm super king-size mattresses

The firmness rating is essential, as it can dictate how supportive and comfortable it is for different sleepers. Heavier people will benefit from a firmer rating, whereas lighter people will find something softer more comfortable. A super king memory foam mattress, for example, is ideal for most sleepers, with higher density offering a firmer surface without compromising on comfort thanks to the unique contouring effect.

Your sleeping position also impacts the firmness level you need. Check out our guides on the best mattresses for side sleepers and the best mattresses for front sleepers to make sure you get the correct firmness for your position.

There is no specific weight for super king-size mattresses, as they will vary depending on the mattress type. A mattress with mostly foam will likely weigh less than one with multiple layers, but the exact weight will depend on the mattress. It's essential to ensure that your bed can accommodate the weight of the mattress and sleepers combined, so double-check this before purchasing! You can do this by checking the product page or contacting our customer service team via phone, email or live chat!

Despite their large size, we've made sure that our 6ft mattress range is suitable for all budgets, with something to suit every price point. So, whether you're looking for a simple structure or want to go all in on a super king hybrid mattress, there's something for everyone.

In addition, we've got plenty of ways to help spread the cost with our affordable 0% interest finance options! If you're looking for a great deal, our Sales page features plenty of great options for less.

Buying a mattress super king from Happy Beds means you not only get a high-quality mattress that will offer high levels of comfort and support but also get to enjoy the following benefits:

• Fast delivery - with many super king mattresses in stock, our standard or premium delivery service can quickly deliver to a date of your choosing.
• Multiple ways to pay - we have plenty of payment options, including upfront payment or a 0% interest finance option such as Klarna, to reduce the stress of paying for a super king mattress UK.
• Helpful customer service – whether you want to find out something before purchasing or have a query after delivery, our dedicated customer service team is here to help.
• Manufacturer's guarantee - buy confidently, knowing that every mattress sold on Happy Beds comes with a 5-year guarantee as standard.
• Mattress recycling - do you have an old mattress you need to get rid of? Add our mattress recycling service to the basket, and we'll take your old mattress away! Check our mattress recycling guide to find out what you need to do to prepare it for recycling.