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 standard king-size mattress. You might also hear them referred to as a 6ft mattress, designed to fit onto a 6ft bed frame. Despite the name, 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!

If you’d like to compare this with other available sizes, our mattress size guide has plenty of additional information to help you make the right choice.

No two sleepers are the same, so we offer a wide selection of super king mattresses. Available in various materials and firmness levels, our range has something for everyone's sleeping style:

Super king orthopaedic mattresses

A super king orthopaedic mattress is ideal for sleepers needing enhanced back support. These mattresses are designed to help alleviate lower back pain by encouraging a correct spinal alignment and tend to feature a firmer material. They’re perfect if you want a supportive sleeping surface without sacrificing the comfort of a larger bed.

Super king memory foam mattresses

If you prefer a mattress that adapts to your body, a super king memory foam mattress is a fantastic option. Developed using high-tech memory foam created by NASA, this foam uses your body heat to contour to your body, offering personalised support across the surface of the mattress.

Super king pocket sprung mattresses

A super king pocket sprung mattress is excellent for couples, as its large size means you're less likely to be woken up by movement. With thousands of individually wrapped springs, pocket sprung mattresses limit motion transfer and ensure each sleeper receives support, offering the perfect environment to get the ultimate sleep.

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. It’s a reliable, long-standing option that offers consistent support at an excellent price.

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 gently contours to your body, giving you high levels of support while remaining breathable.

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

Choosing the right firmness rating is essential, as it can dictate how supportive and comfortable a mattress is for different sleepers. Heavier people will benefit from a firmer rating, whereas lighter people will find something softer more comfortable.

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!

Buying a super king mattress from Happy Beds means choosing a high-quality mattress built to deliver long-lasting comfort and support. You’ll also enjoy a range of added benefits, including:

• 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.

Super by name and super by nature, our super king size mattresses are the most generous sleep option we offer. If you like to spread out while you sleep, are taller, or want as much sleeping space as possible, a super king mattress is the perfect option. Larger than a king mattress, they offer the most comfort and space, perfect for a super king bed. With all this space available, there's no need to ever feel cramped while sleeping again with a super king size mattress.