Sleep King Memory Foam Mattress
Our best selling king memory foam mattress, offering great value for money while providing ultimate comfort.
Featuring our luxury 50kg/m3 memory foam and our 30kg/m3 high density support layer CNC cut with our unique tear airflow system to ensure that you get a brilliant night’s sleep without overheating. The combination of temperature sensitive memory foam and a high density support layer means our mattresses closely conform to your unique shape and helps cradle your body and avoid unnecessary pressure on your body and muscles. Resulting in a deeper more restful sleep.
Unlike a coil spring mattress, there are no pressure points in places like your shoulders, hips, and knees. Your back is better supported because the mattress conforms to your back and helps it hold its natural shape.
Overall Firmness – Soft / Medium
Mattress Size: King
Dimensions: 5ft x 6ft 6″ (150cm x 200cm)
Total Depth: 21cm
Memory Foam Depth: 5cm
Memory Foam Grade: 50kg/m3 Premium
Firmness: Soft / Medium
Availability: Next Day
Latest Foam Cut To Size & Product Reviews
- Uloma Okwuosa
The best mattress ever! I’ve had my mattress for a week and I am amazed at the quality of my sleep since I got it. I haven’t slept this well in years . It is soft enveloping and so cool. What a bargain. Thank you!
- Garry Cunningham
I always buy memory foam mattress don't look at bed shops you won't get the quality and it will cost you more and take longer to come 😁
- Vanessa Stewart
tremendous value and comfort - Excellent prompt delivery within 24 hours. Super comfortable, modest in price but tremendous value.
- Cathryn Allen
Much better than the first mattress I bought online, had to send that one back. Finally, I can get a decent night's rest.
- Rebecca Kriese
Simply wonderful :) x
- Thomas Kershaw
Such a good mattress worth every penny.
- Ann Lemon
Amazing mattress, so happy.
- Lisa Neal
Incredible. Never owned a better mattress.
- June Higgs
Very very happy. I had the whole mattress to myself this weekend and I'm secretly wishing I have the same next weekend
- Rhiannon Leeming
I've been long overdue a new mattress and wow! Why did I put this off so long?
- Jennifer Parker
What a wonderful mattress and a wonderful price to go with it.
- Ann Frear
much more supportive than the mattress I used to have.
- Emma Pond
Looking forward to tonight on this mattress
- Paula Hills
Wonderful! If you're in two minds, buy it. Highly recommended.
- Garry Lewis
I didn't think it was possible to fall in love with a mattress.
- zoe palmer
i thought they'd delivered the wrong thing first as it came rolled up should have seen my face lol
- Simon Atherley
Fast delivery and good quality, hope it lasts.
- Joe Bagley
If you love sleep you'll love this mattress.
- Patricia Hill
Can't recommend this mattress more highly to people.
- Keith Clement
This is an impressive mattress considering how little it costs in comparison to some of the big name brands. Just goes to show!
- Jason Gray
This is a well-made mattress and the price doesn't reflect it. I would honestly have paid more and still been happy.
- Keith Wood
Arrived rolled up, which made it easier to move it upstairs. Great mattress.
- David Stewart
slept like a baby, thanks GB
- Betty Cook
Wow, I'm really impressed with how comfortable this mattress is, I've had one of the best nights sleep in ages.
- Lisa Stevens
Fantastic quality mattress, had one of the best nights sleep I've had in years.
- Arthur Walker
Lovely and comfortable.
- Jesse Hall
My goodness this wasn't what I was expecting, after going from bed shop to bed shop I was a little dubious to order online but so please that I did. fantastic work.
- Craig Harris
Quick and easy delivery thanks
- Theresa Turner
I'm amazed by how much more comfortable foam is rather than old sprung mattresses
- Mark Patterson
very comfortable and quick delivery
- Larry Barnes
best night sleep I've had in years
- Heather Richardson
really comfortable - nice job GB foam
- James White
This mattress is top quality, it's so much better than my old sprung one
- Rachel Edwards
Haven't tried it yet but delivery was fast and service was great.
- Terry Smith
Exceeded my expectations. Glad I went for this one in the end, saved myself a fair few quid.
- Neill Ward
super comfortable, I would recommend this mattress to friends.
- Chris Watson
Considering buying a couple of singles for the kids after buying this one.
- luke fields
Superb nice and comfy
- Lee Greenwood
Fits our sleigh bed. Arrived super quick as well. Very happy with the purchase!
- Grace Mellor
Perfect. Sleeping much better since owning this. Thank you
- Adam Kelley
Fitted our bed frame perfectly. Bought a few of your mattresses for a project at work and thought I would treat myself. Was definitely worth the money.
- Oscar Hayes
The best mattress I've ever owned without a doubt.
- Ethan Swift
Fantastic memory foam mattress. I'd go as far as to say this is the best mattress I've ever owned.
- Liam Wade
Very high quality for the price. This is the first memory foam mattress I've owned and so far I am impressed with the results.
- David Hill
Brilliant mattress for the price, I've been sleeping so much better since having it.
- Sarah Butler
Much better than I thought it would be. Was a little firm at first but is beginning to break in
Why Choose GB Foam For Your Foam Cut To Size?
Our factory is equipped with the latest CNC cutting technology and throughout the years we have employed the most talented freehand foam cutters in the industry. Many members of the team have worked for the company for several decades and their attention to detail and quality control is something that only comes with years of knowledge and experience.
We have many customers who started with us in 1976 and are still working with us today, which we like to think reflects on our vision to be the most dynamic foam converter in our industry. For us no job is too big or too small. We offer the same level of service and delivery whether you are a retail customer ordering one piece of foam from home, or a large manufacturer ordering daily.
40 Years In BUsiness
GB Foam have been offering foam cut to size from our factory since 1976.
Hand Made In THe UK
We employ the most talented freehand foam cutters in the industry.
ISO 9001 Quality
Our team work to the ISO 9001 quality standards to guarantee only the best
Super Fast Delivery
All orders placed before 11:00am will be despatched for next working day delivery
5 Year Guarantee
Our foam comes with a 5 year guarantee against faults in manufacture.
Our entire range of foam exceed UK safety and flammability standards.