Super King Size Mattresses

Browse the collection of super king-size mattresses (180cm x 200cm) at Dormeo, where you'll find luxury mattresses with free UK delivery. Generously sized and superbly comfortable, we’re confident that you’ll love them! 

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  1. Octasmart Fresh Plus Memory Foam Mattress
    60 night trial Free pillow
    Firmness: Medium
    Mattress Height: 17cm
    Octasmart Fresh Plus Memory Foam Mattress
    £599.99
    0% Finance available
    FREE Delivery available
  2. Octasmart Fresh Deluxe Memory Foam Mattress
    60 night trial Free pillow
    Firmness: Medium/Soft
    Mattress Height: 20cm
    Octasmart Fresh Deluxe Memory Foam Mattress
    £699.99
    0% Finance available
    FREE Delivery available
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Frequently Asked by Our Customers

What size is a super king mattress?

In the UK, a standard super king-size mattress measures 180cm wide by 200cm long, or 6' x 6'6". A full 45cm wider than our standard double mattress, 60cm wider than a small double mattress, and twice as wide as a single mattress, a super king mattress is ideal for couples who like to have plenty of space.

Each super king-size mattress benefits from our innovative design and quality craftsmanship, delivering unparalleled levels of comfort and support for your sleep. We make these products in all of our leading styles, including memory foam, pocket sprung, latex, and hybrid mattresses. You can enhance the experience of falling asleep on one of these mattresses further by adding some of our super king bedding or a super king mattress topper.

What is the difference between a king and super king?

The only difference between a king and super king mattress is that the latter is an extra foot wider. This makes them perfect for taller people or those who sleep more soundly with extra room.

Will a super king bed fit in my room?

We recommend a super king bed for rooms no smaller than 3m x 3.5m. This will give you plenty of space to fit bedside tables either side, while leaving space to move around the rest of the room.

If you’re looking for a smaller style, our European king-size and king-size mattresses are a little narrower, but still offer a generous amount of room to stretch out. We also have other mattress sizes on offer, including single, small double, and double mattresses, so you're bound to find the perfect size for your needs.

Our Super King Size Mattresses

Not sure what’s right for you? Our mattress and bed size guide has all the answers. Plus, with our 60-night comfort guarantee, you’re free to change your mind if you’re not completely happy with your new mattress. Simply send it back and you’ll receive a full refund or exchange.

Feel free to get in touch via [email protected] or 0800 625 0134 if you have any questions about our super king mattresses. We offer free tracked UK delivery with all orders, so be sure to shop for your ideal super king-size mattress with us today.

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Dormeo UK Limited trading as Dormeo, is registered in England and Wales no. 07440398. Registered address: Wye House, 376 London Road, High Wycombe, Buckinghamshire, HP11 1LH. Dormeo UK Limited is Authorised and Regulated by the Financial Conduct Authority as a Consumer Credit Firm under firm number 627302. Klarna Bank AB (publ) is Authorised by the Swedish Financial Services Authority (Finansinspektionen) and is subject to limited regulation by the Financial Conduct Authority. Registered office: Sveavägen 46, 111 34 Stockholm, Sweden. Corporation ID number: 556737-0431.