King Size Mattresses

Get ready for a blissful night’s sleep on one of our king size mattresses. With medium firm and firm king size mattresses, there’s an option for you no matter what your sleeping position. And with a full range of king size mattress toppers, protectors and bed linen, you can find everything you need to complement your new mattress.

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Customer Reviews 

What size is a king size mattress?

Our king size mattresses are the standard UK sizes. They measure 150cm x 200cm (5ft 0" x 6ft 6") and are the same size as our king size toppers, king size mattress protectors and king size fitted sheets. If you have a king size mattress but want a little extra room for your duvet, size up and go for a superking duvet. Want to know more about mattress sizes? Visit our size guide.

Which mattress is best for back pain?

Choosing the best mattress for back pain depends on your sleeping position. That’s because the way we sleep puts pressure on our bodies which can aggravate the joints and spine. If you sleep on your back or stomach, you’ll find a firm mattress supports your spine in a neutral position to help alleviate back pain. If you sleep on your side, a medium firmness mattress will be better thanks to the way the mattress lets your hips and shoulders sink into the mattress. This will help your spine rest in a more neutral position. You may also find using specialist pillows that help align your hips and knees will reduce pressure on your back. Some people find that memory foam mattresses help their back pain, others prefer pocket sprung mattresses.

King size mattresses are big, bold and beautiful at Soak&Sleep!

Every mattress has been through a rigorous commissioning process. We make sure it's the very best it can be for its price range. Because everyone has a budget.

First, a few choices to explain. Pocket springs make better mattresses because the springs are individually cased, giving you a mattress that dips in exactly the right places - and springs back into shape when you get up. Open springs are firmer and more supportive but less tailored. You can choose from natural upholstery options - like wool and cashmere - or memory foam, which is great for people with back problems. Questions? For personal advice just ask.

Our bedding expert says: "Our king size mattresses are the standard UK sizes. They measure 150cm x 200cm (5ft 0" x 6ft 6"). If you have a king size mattress but want a little extra wriggle room from your duvet or you need to wage a war against a duvet hogger, size up and go for a superking duvet."