Buy King Size Memory Foam Mattresses

What is a memory foam mattress?

A memory foam mattress - also known as a memory mattress or foam mattress - is a mattress with a layer of viscoelastic (memory foam) on top.

Memory foam mattresses are remarkably comfortable, provide high levels of pressure relief and are naturally hypoallergenic. They're temperature-sensitive and contour to your unique shape, giving you extra care for aches and pains.

They also feel luxurious - so they're the perfect way to relax after a long day.

Are memory foam mattresses good?

Yes, memory foam mattresses are great if you're looking for plush comfort, support and pressure relief. The best memory foam mattress adapts to your shape and movements as you sleep, for a tailor-made feel. This also helps prevent motion-transfer - so you won't be disturbed if your partner turns over.

Which memory foam mattress is best?

The best memory foam mattress is one that provides the comfort and support you need to get the best sleep. For many people, firmness is one of the most important considerations when choosing a mattress.

Select a softer or medium memory foam mattress for a super-comfy feel, or if you sleep on your side. Prefer extra support? Try a firmer memory mattress instead.

You should also consider mattress size. If you're shopping for your children or a guest bedroom, a single memory foam mattress is best. A double or king size is a perfect choice for couples. For a luxury memory foam mattress feel - try a superking!

Lastly, choose your favourite brand. We stock thousands of memory foam mattresses from big names, including Silentnight, Sealy, Simba, Mlily - and so many more!

How long do memory foam mattresses last?

Memory foam mattresses can last a long time. How long it lasts depends on a variety of factors, including how often you use it and the quality of your mattress.

However, as with all mattresses, eventually you will need to replace it. We recommend changing your mattress every seven years, in line with advice from the National Bed Federation.

Are memory foam mattresses safe for children?

Yes, memory foam mattresses are safe for children, provided they adhere to UK safety standards. As with all foam mattresses, we recommend that you aerate them in a well-ventilated room for a few hours before use.

Memory foam mattresses are comfortable and support your child as they grow. They're also naturally hypoallergenic and are easy to care for too. Read our mattress guide for children or find out more about what mattress to buy for your baby.

Should I buy a cheap memory foam mattress?

Your mattress is one of the most important investments you'll make, so it's worth spending a little more to get it right. Generally speaking, a cheap memory foam mattress may not last as long as a more expensive mattress that will likely be better quality.

At Mattress Online, we have made it easy to find a cheap memory foam mattress without compromising on quality. We offer incredible savings of up to 60% off our already low prices so we can match any budget. Plus, as we only stock industry-leading brands, you know you can enjoy a great night's sleep for many years to come.