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Super King Size Pocket Sprung Bed Mattress, Knightsbridge Collection

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Super King Size Pocket Sprung Bed Mattress, Knightsbridge Collection



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With 1200 individual springs and a generous memory foam layer, the Knightsbridge super king sized bed mattress from Sloane & Sons is designed to give you the best night’s sleep possible. This is the largest of the mattresses in our Knightsbridge Collection and comes with our mark of quality craftsmanship as you would expect.

This superior mattress is made with Tencel, a natural fibre which comes from the eucalyptus tree. It’s a luxuriously soft and smooth surface, but it’s strong enough to withstand even the most restless of sleepers. Tencel is breathable to make it as cool as linen, but the microscopic sized fibres provide a texture as soft as silk. As a sustainable fabric which can use as little as 5% of the water and a fifth of the land that cotton does, it’s a great choice for the environmentally conscious, so that’s one more reason that you’ll be able to sleep well!

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Product Features

Mattress Features
Mattress Features
Mattress Features
Mattress Features
Mattress Features
Mattress Features


Just like all of Sloane and Sons' pocket sprung mattresses, this mattress has approximately 1200 individual pocket springs per mattress, each individually housed as you would expect from a fixture crafted with the care and attention that we put into all of our range.

Pocket sprung mattresses are idea for both regulating body temperature and keeping you comfortable through the night. Our design is created with individual springs that are encased in their own fabric pockets. As each spring works independently, it means that your body receives the support it requires in each individual area of your body. It also means that if you and your bed partner are of a different height and weight, you will each be supported separately, meaning no more rolling into the centre of the bed.

Unlike some cheaper alternatives that only contain a single top layer; a layer of memory foam is incorporated on both sides of this mattress. We feel that this is vital for longevity, as it means that you are able to turn the mattress over regularly. Doing this will make sure that you always get the best support, as well as an expected lifespan of 8-10 years when cared for properly.

The firmness of this mattress is rated at seven out of ten, meaning a good level of support without being too stiff. Being generously sized at 183cm x 200cm, there’s plenty of room to spread out, perfect for those warm summer nights when you just need to keep cool, and of course, the individually pocketed springs will help with that too, as you benefit from great airflow through the mattress.

Within that 24cm of luxury depth, you’ll find layers of memory foam, surrounding high density springs, and hen individually pocketed springs to ensure that you can sleep comfortably and supported. By using both springs and memory foam, we’re able to give you the best of both worlds, and the hand-stitched sides and piped edges serve as a reminder of the quality of craftsmanship that we pride ourselves on at Sloane & Sons. As it is made with Tencel, this is also one of the most sustainable mattresses you can buy. It’s a regenerated material that was originally designed for use in face masks. This means that it’s kind on the skin, and soft as silk. Unlike silk however, Tencel is light, airy and will help you from overheating, it’s no wonder it’s more in-demand within some sectors than Egyptian cotton!

Like all of our quality, luxury mattresses, this model is fully compliant with the BS 7177: 2008 safety standard for Domestic Use (Low Hazard). It has a weight of 35kg and is designed to fit a super king size bed so check your bedframe is suitable before buying.

Should you need any help with assessing your night-time needs, then our door is always open. You can contact us by phone or email so please does get in touch, we’d love to help you get the most restful sleep possible so we are happy to answer all and any questions that you might have.


Additional Information

Mattress Size Super King
Mattress Depth 24cm
Mattress Dimensions 183cm x 200cm
Mattress Firmness 7 / 10 ( 1 = Soft - 10 = Firm )
Mattress Type Pocket Sprung
Mattress Care Double Sided
Tick Composition Tencel
Mattress Weight (Kg) 35.0000
Tuft Type Memory Foam Top Layer
Safety Credentials Conforms to BS 7177: 2008 for Domestic Use (Low Hazard)
Buying Guide

Buying Guide

At Sloane & Sons we understand the importance of a good mattress. At the most fundamental level, a good mattress equals a good sleep, which equals better health. It might sound obvious but you'd be amazed at just how damaging the health effects are of poor sleep. (Don't take our word for it - here's what the NHS has to say.)

Buying a new mattress is a brilliant step towards a great night's sleep. But which mattress should you buy? We want to make sure you make an informed choice, so do please read on. If you still have questions, we would be very happy to speak to you on the phone or via email - don't hesitate to get in touch.

Our primary message is: don't compromise on quality. Being uncompromising doesn't have to cost the earth though - we keep out prices as reasonable as possible but always keep our standards sky high. With our mattresses lasting up to 10 years so, they are a small price to pay for the comfort, relaxation and better health you'll have as a result 365 days a year.

Sloane & Sons specialise in the two most popular type of bed mattress: memory foam and pocket sprung. We know that many retailers, both online and on the high street, offer thousands of choices but there really is no need. It ends up as confusing rather than helpful. We feel that by having a smaller, more focused range of high quality products, this allows you to choose more easily based on things like size, comfort, firmness, price and type of mattress.

Bed Mattress TypeBed Mattress Size (cm)Bed Mattress Size (feet / inches)
Single Width 90cm x Length 190cm Width 3'0" x Length 6'3"
Small Double Width 122cm x Length 190cm Width 4'0" x Length 6'3"
Double Width 135cm x Length 190cm Width 4'6" x Length 6'3"
King Size Width 153cm x Length 200cm Width 5'0" x Length 6'6"
Super King Size Width 183cm x Length 200cm Width 6'0" x Length 6'6"

Memory Foam Mattresses

Memory foam was developed initially by NASA as a material that would absorb great pressure from astronauts' bodies as they re-entered the earth's atmosphere. Today, this technology makes wonderful mattresses as it can relieve stress and pressure points on your body as you relax into the supple embrace of the memory foam.

  • Memory foam moulds as your body heats up and softens the core around you
  • This allows both support as you lie still but also natural and free movement during sleep
  • Alignments of the spine (horizontally) ensures correct posture
  • Memory foam has hypo-allergenic and anti-microbial properties

Memory foam is ideal for people experiencing joint pain and for people who suffer from allergies. Many people without these issues also enjoy the feeling of warmth, support and comfort that memory foam provides.

Pocket Sprung Mattresses

Pocket sprung mattresses are the most common and popular type of mattress in the marketplace. They differ significantly from cheaper alternatives such as bonnel spring or open sprung bed mattresses, which we believe are less comfortable, less supportive and not as good value for money in the long term.

The reason is that pocket sprung mattresses compartmentalise each individual spring in order to evenly distribute the weight and respond to the different pressure points and weights of your body.

  • Ideal if you and your partner differ in height and weight. They will evenly distribute the pressure within the mattress and prevent you from rolling into one another
  • Sloane and Sons mattresses have approximately 1200 individual pocket springs per mattress that are individually housed and this is the benchmark for high level craftsmanship
  • Each 'pocket' works independently from another, to evenly distribute weight
  • This style of mattress allows a good airflow around the body, keeping your comfortable through the night and refreshed in the morning

All Sloane & Sons mattresses have hand-stitched sides and piped edges that underline the quality of design and craftsmanship.


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