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Sealy Casoli 1200

The Sealy Casoli 1200 is a superb Mattress in the Sealy Posturepaedic Pocket Collection. This excellent Mattress is a has won the Which? Magazine Best Buy Award, three years in a row! This 1200 Pocket Spring mattress is the best selling mattress and divan in the Sealy range, and rightly so, no wonder it is the Which Best Buy!.

Sealy is an American company, and so they spell it Posturepedic! All our Sealy mattresses are made in Cumbria, England, by Sealy UK.

Ever wondered which Sealy mattress is best? Well this one has won the Which Magazine award more than any other mattress! This mattress has 1200 Pocket Springs, each acting independently to support the body's contours exactly where required. This type of spring is set in it's own cotton pocket, and will not affect it's neighbouring springs as weight is applied. This simple yet effective detail means that the springs can concentrate on a specific area of the body, ensuring accurate and precise support.

To add another level of accurate support to this mattress, it is also Zoned. This technique sees the Spring unit divided into sections, and the areas that carry the majority of the body weight (lumbar region, shoulders) are built slightly differently to take this loading into account. The result is that this Sealy mattress will offer even more accurate support - no more aches and pains in the morning.

The Sealy Casoli has a deep layer of Latex on the surface. This latex layer is designed to further enhance the level of support the body will experience, as well as offering an extremely luxurious sleeping surface. Latex responds instantly, and will conform to the contours of the body effortlessly, and without requiring heat. Latex is completely natural and is also hypo-allergenic and has anti-dustmite properties.

Sealy have a Worldwide reputation for development and introducing new techniques and practices to the market. The Casoli has many excellent specifications, and the patented Sealy Unicase System is a good example. This system results in increased edge-to-edge support, meaning there is a larger sleeping surface for you to enjoy. Another example of Sealy's drive for development is the cover material. This Tencel fibre cover was introduced by Sealy and has now become commonplace in the bedding industry. Tencel fibres are completely natural and are exceptional at maintaining a comfortable temperature and moisture level. Sealy Tencel Fibres also happen to be incredibly tactile, luxurious and durable.

This top selling Sealy bed is a no-turn mattress for easy care, but does have handles for easy movement when required. We complete all lifting and unpacking of the Sealy mattresses (larger than Single Size) and all Divan beds.

Sealy introduced a recent facelift to this model, and you can now select from three colours to have the base finished in, but also the handles and piping of the mattress itself. The colours available are Cappuccino, Bark or Granite.

The base of this Sealy bed is as strong and durable as you would expect of this International brand. The base can be offered with a choice of drawer configurations and colours. The drawers are among the strongest on the market and are capable of supporting a good weight. The fabric used to finish the base is of very high quality and will stand the test of time.

The Sealy Casoli 1200 Silver Pocket mattress has a Guarantee of 1 year and a Warranty of 12 years as standard.

Available in the following sizes:
  • Sealy Casoli 1200 3' Single
  • Sealy Casoli 1200 4'6 Double
  • Sealy Casoli 1200 5' Kingsize
  • Sealy Casoli 1200 6' Super Kingsize
  • Sealy Casoli 1200 6' Super Kingsize ZIP

Product Specifications

1 Year Guarantee

This item is completely covered for the number of years stated above. Any faults reported in the Guarantee period will result in no cost to you whatsoever.

10 Year Warranty

A Warranty is the most common form of protection you have against any manufacture fault. Most warranty lengths in the bed trade are 5 Years, and will include a 1 Year Guarantee, which is complete cover. So for instance the cost of a £100 mattress on a Warranty is as follows:

  • 1st Year: Replaced at no cost to you.
  • 2nd Year: You Pay 20% of the replacement cost (of new model).
  • 3rd Year: You Pay 40% of the replacement cost.
  • 4th Year: You Pay 60% of the replacement cost.
  • 5th Year: You Pay 80% of the replacement cost.

Filling Type - Latex

Latex is one of the finest materials for use in the bedding trade. Whether it be a Latex mattress or pillow, the results are superb and offer a fantastic night's sleep. Latex is natural, hypo-allergenic and is extremely durable. Unlike Memory Foam (a man-made version of Latex), Latex remains cool and dry throughout the night, it also moulds to the body's contours instantly, and returns to it’s natural shape just as quick.

Did you know that even those with Latex allergies can use a Latex mattress, due to the way Latex is processed? The manufacturers wash the Latex core of the proteins that cause the allergies. This excellent, natural material is also anti-dust mite and bed bug resistant.

Additional Information

Quilted Yes
Spring Type Pocket Sprung
Guarantee 1
Mattress Depth 25-30cm
Mattress Type Quilted
Turnable No-Turn

Sealy Casoli 1200

Product Details

  • Which? Magazine - Best Buy!
  • Top 3 Best Selling Mattress!
  • 1200 Pocket Springs.
  • Zoned Spring Unit.
  • Innergetic Latex Layer.
  • Unicase Edge-to-Edge Support System.
  • Quilted surface.
  • Finished in Tencel fibre.
  • Medium feel.
  • No-turn Mattress.
  • 12 Year Warranty.
  • Choice of colours.
  • Mattress Depth: 29cm approx.
  • Base Depth: 39cm approx.
  • Headboard sold separately.
  • FREE Delivery to room of choice.

Was: £480.00

Now: £337.00

Was: £480.00

Now: £337.00

In stock

Free Delivery

Delivery

We deliver on your day of choice.

Mattresses & Divan Beds:
    [read more]
2-3hr time window. 1hr notice. Delivered to room of choice, unpacked.
Pillows & Bedframes:    [read more]
1hr delivery slot. Delivery to the door.
Rolled-up Mattresses:     [read more]
Tracking code emailed. Delivery to door.
Furniture:
Service differs according to the product.

Our Returns Policy
MyNextMattress Delivery Zones

Frequently Asked Questions

Please take a look below at the frequently asked questions. If you don't find what you're looking for you can always ask us here.

I am looking to purchase a King size Sealy Casoli 1200 mattress, do you stock this item in white as shown in the picture ? Regards, Keir Gordon

Hello, Yes, we have this item in stock in White, but also the other colours too! MNM

Customer Reviews

Please find the reviews for this product below. If you have bought this product why not let us know your opinion by adding your own review.

Could not be happier
Review by R Francis
(Posted on 21/02/2017)
Exactly what we wanted from the mattress. We wondered where to buy a sealy mattress from, and did our research. In the end we came here and after some advice we opted for the which winner. Very pleased we did too! Fully recommend!
Good quality
Review by ABC123
(Posted on 05/12/2016)
Very good quality. Very comfortable and supportive. Not too soft but still comfy.
Really good
Review by Carole Davies
(Posted on 03/11/2016)
Best mattress we have ever owned, and very good quality.
A great mattress
Review by HJK
(Posted on 06/09/2016)
This mattress is everything we wanted and I would recommend it to anyone. The comfort and support is much better than anything we've had before. Top marks on this Sealy mattress.
Excellent value and comfort
Review by Paul & Janice
(Posted on 09/06/2016)
We were surprised at how much we liked this mattress when it was delivered. We are very pleased with it all around, and cannot overstate the quality and comfort this mattress offers for not much money!
AMAZING!
Review by Cassy
(Posted on 18/04/2016)
Recommend it to everyone!
Could not be more pleased with this mattress.
10 out of 10
Review by TheRealSlimShady
(Posted on 18/03/2016)
Really good. Great for both of us and sorted the wifes back problem out.
Superbly well made
Review by Alex
(Posted on 18/03/2016)
Very supportive and comfortable! Made to a better standard of finish thatn we were expecting. Very good indeed.
VERY PLEASED
Review by Depak
(Posted on 10/03/2016)
More than happy.
Have since ordered 2 more for other rooms in the house. Good bed, good prices.
Disappointed
Review by Keir Gordon
(Posted on 01/02/2016)
Bought this matress in May 2015 and by December we were noticing 2 deep troughs where we slept in the latex surface layer, deeper in the morning on rising but still very obvious the next night. We are both of petite, proportionate build and of quite light weight. For a Sealy mattress (advertised as top of the range) of under 1 year old, it is a bit disappointing. Haven't noticed any back issues yet but it means we tend to roll together during the night which causes a bit of sleep disturbance. Don't know if latex is supposed to do this but intend to post on the Sealy website as well. I guess we are stuck with this mattress for a good few years yet as it was too expensive to bin. Having always bought Sealy, would consider other makes in the future. Absolutely no complaints with regard to MyNextMattress, excellent service.
Good mattress.
Review by Bailey
(Posted on 14/12/2015)
We have had this over a month now. The first few nights felt quite firm, but with each one it has become softer and more comfortable, it is hard to get out of bed in the morning! Sealy provide a booklet in which it says that the top layer will 'bed down', however I did not expect it to quite the extent which it has. We now have noticeable divots in the mattress where we sleep (we are not large people), it is still comfortable, however it has increased the 'roll-together' factor in the centre and I am not sure whether this slope is giving me bad back. It does make me wonder how durable it is going to be if the topping has already sunk in this way over the first month. It is a little sweaty so does need to be paired with a cotton protector and duvet inner/cover to keep you cool. Normal sheets do still fit, although they do pull up at the centre of the edges a bit over the night, it is not enough to need to throw them all out though. Overall, it is a good comfortable mattress for the price, we will see how it stands the test of time.
Amazing
Review by Ashleigh
(Posted on 03/11/2015)
10/10!
We have ordered one as a present for my parents too!
Fantastic Mattress
Review by Francesca777
(Posted on 22/10/2015)
We spent a long time checking mattresses after we could put up with the heat and sag of our old memory foam mattress any longer The Sealy Casoli certainly lives up to its Which awards. It is substantial but the top layer of latex gives a lovely pillowy texture. It's big too, think princess and the pea, so some deep fitted sheets are needed. Mynextmattress are great to deal with too.
Highly recommended!!
Review by Clare
(Posted on 23/09/2015)
We were expecting a few days to get used to this new mattress, but it's been so comfortable since the first night. Best night sleep in years. Tried this mattress at a local shop then bought from here as the best price I could find, great customer service and swift careful delivery men. Would definitely recommend this company and mattress.
Great.
Review by P Butterworth
(Posted on 17/06/2015)
Fully recommended!
Brill!
Review by LiZZy
(Posted on 18/02/2015)
We're both very pleased. We've always had Sealy mattresses and this is the best we've had. A great purchase and fully recommended. We love Sealy beds!
As good as it gets
Review by Teresa
(Posted on 13/02/2015)
We had the 1200 a year ago from this company and it was very good indeed. We like the Which magazine award. This new name is just as good, we have just taken delivery of three for our new house and could not be happier. Top marks.

Glossary

Below are glossary terms for associated for the product - Sealy Casoli 1200.

Drawer Options

The term 'Divan' comes from the Greek word 'Divani', meaning a couch-like piece of furniture. Divans have many, many variations as they are essentially a surface on which to place the mattress with space for storage underneath.

A traditional Four Drawer Divan features two equal sized drawers on either side of the base. A Four Drawer base is not typically an option for Small Single, or Single sized beds due to the lack of space in the base. There are many options for the Divan Base, they include:

  • No Drawer.
  • 2 Drawer.
  • 4 Drawer.
  • 4 Drawer Continental (2 normal sized drawers and two smaller drawers, usually designed to accommodate bedside furniture).
  • End Drawer (which can also be combined with 2 side drawers).

Divan bases can also include the above options but also with the extra option of a Sprung Base, or a Platform Top/Solid Base.

Firmness

MyNextMattress is developing a new and unique solution to the Firmness scale accuracy. Not seen anywhere else in the World, we will be measuring the Firmness of all our mattresses precisely and in detail.

We are the only company in the Country that will actually measure the Firmness of a mattress and give a grading out of 10. We are always aware that choosing your next mattress can be a difficult and time consuming process, therefore we strive to give as much information as possible on every mattress we sell.

The way our system works is by applying weight to a mattress. We will apply weight gradually and measure the amount the mattress dips. The more weight, the more the mattress will 'sink'. We would then measure the distance the mattress dips and plot these measurements (weight and distance) on a graph. This graph can then be used to tell us the Firmness category the mattress fits into, 7 out of 10 for instance.

Our Firmness Device provides a central rod which we apply weights to, on the bottom end there is a disc which pushes into the mattress. The top of this rod supports the weights and will sink according to the 'give' in a mattress. We measure from this point.

As a result of this unique technique, it will be possible for you to shop by the firmness of a mattress, this is not possible anywhere else.

Foam Encapsulation

Foam Encapsulation is a recent addition to the bedding market. An idea designed to offer greater edge-to-edge support as well offering greater Bedstead/Slatted base compatibility.

The idea is simple; Create a spring unit and then sit it in a 'matchbox' of Foam. As you can see in the diagram below, the spring unit is surrounded on all sides by a layer of Memory Foam. This foam gives a solid, stable feel to the mattress and allows the spring unit to be completely separated from the mattresses fillings and cushion. 

Once the spring unit is set in the foam and the foam glued together, it can be surrounded by fillings and fibre to create the traditional look for a mattress or can be given a Pillow Top for even more comfort.

Latex

Latex is the ultimate in luxurious natural materials (but can be synthetic in other markets). Latex is actually found in more than 10% of flowering plants around the world. About 20,000 species from more than 40 families. The Latex used in the bedding industry is taken from sustainable sources. Latex is perfect for mattresses because it is soft, hypoallergenic, natural and moulds to the shape of the body. 

Latex used in bedding also tends to be treated in such a way that it can be used by people who have Latex allergies! The technique used is to super heat the Latex unit, freeze it, super heat it and freeze it again. Once this process is complete, the harmful chemicals released can be chemically washed off, leaving it suitable for everyone. Latex is the material Memory Foam has tried to copy. Memory foam  requires heat to mould to the shape of your body and can therefore become too warm for some. Latex does not require heat and is soft at any temperature. As a natural material which requires time and various processes to be extracted, Latex can be more expensive that its rival materials, but the comfort levels achieved are well worth it.

Pocket Sprung

Pocket Sprung units are an adaption of the traditional open coil/continuous spring unit. By placing each spring in its own individual 'pocket' (a fabric sock-like pouch), the spring is not joined to any other part of the mattress. The pocket that supports the spring is then joined to its neighbouring pockets and this effect creates a unique feel.

By creating a spring unit in this way, it allows the springs to move independently, rather than sharing the pressure with surrounding springs. This effect allows for much more accurate contour following and a more comfortable feel overall.

If you were to push your hand into a traditionally sprung mattress, the area around your hand would dip/sink too. With Pocket Springs, this sunken area is much more remote and therefore more accurately follows the contours of the pressure source. There are differences in the techniques used to create Pocket Springs, but more or less they remain the same.

Warranty

Every mattress we sell comes with at least a 12 month manufacturers guarantee, though most come with much longer guarantees. To find out what mattress warranty is included with your purchase, look out for the rosette on the top right corner of the mattress page. All new goods are sold with a minimum 12-month manufacturers guarantee. Full details are available on request. In addition to the manufacturers guarantee MyNextMattress offers a limited extended mattress warranty. This warranty varies in length item by item. You must keep all your purchase records as they will be needed in the event of a claim. The warranty is applied as follows:

  • The mattress warranty is against faults in manufacture, not wear and tear or damage.
  • The mattress must always be used with a mattress protector, turned and cleaned as per the manufacturers instructions and must be unsoiled at the time that the claim is lodged.
  • The claim must be registered with MyNextMattress by email or in writing. All details of the claim must be lodged with MyNextMattress by email or in writing.

If the claim is accepted the following process will apply:

  • We will arrange to collect the goods and return them to us for inspection.
  • The carrier reserves the right to refuse to collect items that are not packaged suitably or which is unhygienic.
  • We may require pre payment for the costs of the collection in some circumstances.
  • If we validate the claim we will contact you to arrange the replacement goods to be dispatched to you and delivered to you on a date that is convenient for you.
  • The replacement item can be any item from our then current range.
  • The difference in price from the warranty covered item is payable by you, along with the cost of collecting the original item.

There will be an allowance granted against the replacement item according to the following scale.

  • If the claim is validated within the first two years - 40% of the original price will be credited.
  • If the claim is validated in year three of the purchase -25% of the original price will be credited.
  • If the claim is validated in year four of the purchase - 15% of the original price will be credited.
  • If the claim is validated in year five or (if warranty is for longer than five years then any subsequent year up to the warranty period) -10% of the original price will be credited.

The warranty is only applicable to the original purchaser and is only valid if approved by MyNextMattress. It should be considered as extra peace of mind in case of manufacturing defects that arise after the manufacturers mattress guarantee has expired. It should not be regarded as a guarantee that any item will last for any particular period of time, or as a guarantee against deterioration in performance. It is in addition to your statutory rights. There is no entitlement to a cash payment in lieu of the replacement. The replacement item must be at the same or higher price than the original.

Sealy Casoli 1200The Sealy Casoli 1200 is a superb Mattress in the Sealy Posturepaedic Pocket Collection. This excellent Mattress is a has won the Which? Magazine Best Buy Award, three years in a row! This 1200 Pocket Spring mattress is the best selling mattress and divan in the Sealy range, and rightly so, no wonder it is the Which Best Buy!.Sealy is an American company, and so they spell it Posturepedic! All our Sealy mattresses are made in Cumbria, England, by Sealy UK.Ever wondered which Sealy mattress is best? Well this one has won the Which Magazine award more than any other mattress! This mattress has 1200 Pocket Springs, each acting independently to support the body's contours exactly where required. This type of spring is set in it's own cotton pocket, and will not affect it's neighbouring springs as weight is applied. This simple yet effective detail means that the springs can concentrate on a specific area of the body, ensuring accurate and precise support.To add another level of accurate support to this mattress, it is also Zoned. This technique sees the Spring unit divided into sections, and the areas that carry the majority of the body weight (lumbar region, shoulders) are built slightly differently to take this loading into account. The result is that this Sealy mattress will offer even more accurate support - no more aches and pains in the morning.The Sealy Casoli has a deep layer of Latex on the surface. This latex layer is designed to further enhance the level of support the body will experience, as well as offering an extremely luxurious sleeping surface. Latex responds instantly, and will conform to the contours of the body effortlessly, and without requiring heat. Latex is completely natural and is also hypo-allergenic and has anti-dustmite properties.Sealy have a Worldwide reputation for development and introducing new techniques and practices to the market. The Casoli has many excellent specifications, and the patented Sealy Unicase System is a good example. This system results in increased edge-to-edge support, meaning there is a larger sleeping surface for you to enjoy. Another example of Sealy's drive for development is the cover material. This Tencel fibre cover was introduced by Sealy and has now become commonplace in the bedding industry. Tencel fibres are completely natural and are exceptional at maintaining a comfortable temperature and moisture level. Sealy Tencel Fibres also happen to be incredibly tactile, luxurious and durable.This top selling Sealy bed is a no-turn mattress for easy care, but does have handles for easy movement when required. We complete all lifting and unpacking of the Sealy mattresses (larger than Single Size) and all Divan beds.Sealy introduced a recent facelift to this model, and you can now select from three colours to have the base finished in, but also the handles and piping of the mattress itself. The colours available are Cappuccino, Bark or Granite.The base of this Sealy bed is as strong and durable as you would expect of this International brand. The base can be offered with a choice of drawer configurations and colours. The drawers are among the strongest on the market and are capable of supporting a good weight. The fabric used to finish the base is of very high quality and will stand the test of time.The Sealy Casoli 1200 Silver Pocket mattress has a Guarantee of 1 year and a Warranty of 12 years as standard.
9710017
337.0000GBPIn stock
Could not be happier
100100
Exactly what we wanted from the mattress. We wondered where to buy a sealy mattress from, and did our research. In the end we came here and after some advice we opted for the which winner. Very pleased we did too! Fully recommend!
Good quality
100100
Very good quality. Very comfortable and supportive. Not too soft but still comfy.
Really good
100100
Best mattress we have ever owned, and very good quality.
A great mattress
100100
This mattress is everything we wanted and I would recommend it to anyone. The comfort and support is much better than anything we've had before. Top marks on this Sealy mattress.
Excellent value and comfort
100100
We were surprised at how much we liked this mattress when it was delivered. We are very pleased with it all around, and cannot overstate the quality and comfort this mattress offers for not much money!
AMAZING!
100100
Recommend it to everyone! Could not be more pleased with this mattress.
10 out of 10
100100
Really good. Great for both of us and sorted the wifes back problem out.
Superbly well made
100100
Very supportive and comfortable! Made to a better standard of finish thatn we were expecting. Very good indeed.
VERY PLEASED
100100
More than happy. Have since ordered 2 more for other rooms in the house. Good bed, good prices.
Disappointed
96100
Bought this matress in May 2015 and by December we were noticing 2 deep troughs where we slept in the latex surface layer, deeper in the morning on rising but still very obvious the next night. We are both of petite, proportionate build and of quite light weight. For a Sealy mattress (advertised as top of the range) of under 1 year old, it is a bit disappointing. Haven't noticed any back issues yet but it means we tend to roll together during the night which causes a bit of sleep disturbance. Don't know if latex is supposed to do this but intend to post on the Sealy website as well. I guess we are stuck with this mattress for a good few years yet as it was too expensive to bin. Having always bought Sealy, would consider other makes in the future. Absolutely no complaints with regard to MyNextMattress, excellent service.
Good mattress.
95100
We have had this over a month now. The first few nights felt quite firm, but with each one it has become softer and more comfortable, it is hard to get out of bed in the morning! Sealy provide a booklet in which it says that the top layer will 'bed down', however I did not expect it to quite the extent which it has. We now have noticeable divots in the mattress where we sleep (we are not large people), it is still comfortable, however it has increased the 'roll-together' factor in the centre and I am not sure whether this slope is giving me bad back. It does make me wonder how durable it is going to be if the topping has already sunk in this way over the first month. It is a little sweaty so does need to be paired with a cotton protector and duvet inner/cover to keep you cool. Normal sheets do still fit, although they do pull up at the centre of the edges a bit over the night, it is not enough to need to throw them all out though. Overall, it is a good comfortable mattress for the price, we will see how it stands the test of time.
Amazing
95100
10/10! We have ordered one as a present for my parents too!
Fantastic Mattress
96100
We spent a long time checking mattresses after we could put up with the heat and sag of our old memory foam mattress any longer The Sealy Casoli certainly lives up to its Which awards. It is substantial but the top layer of latex gives a lovely pillowy texture. It's big too, think princess and the pea, so some deep fitted sheets are needed. Mynextmattress are great to deal with too.
Highly recommended!!
96100
We were expecting a few days to get used to this new mattress, but it's been so comfortable since the first night. Best night sleep in years. Tried this mattress at a local shop then bought from here as the best price I could find, great customer service and swift careful delivery men. Would definitely recommend this company and mattress.
Great.
96100
Fully recommended!
Brill!
97100
We're both very pleased. We've always had Sealy mattresses and this is the best we've had. A great purchase and fully recommended. We love Sealy beds!
As good as it gets
97100
We had the 1200 a year ago from this company and it was very good indeed. We like the Which magazine award. This new name is just as good, we have just taken delivery of three for our new house and could not be happier. Top marks.