Sealy Posturetech Superior Mattress - Medium Firm Rated 2/5 based on 15 customer reviews

Sealy Posturetech Superior Mattress - Medium Firm

8 Specifications9 Questions15 Reviews
Brand: Sealy
2/5 - 15 reviews


What Makes It Great

We bought one of these several years ago now but within the first year, my husbands side started to dip as he is a heavy man. However the sales folk at dreams knew this. We made it absolutely clear that we needed a mattress that would support his weight. Because of the padding on top you can’t flip the mattress only turn it around from top to bottom. We can’t get a mattress topper as the bed is already much higher than we expected and my side is still ok. When my husband is in bed, the mattress dips even further and causes a lot of sleepless nights. His body is sore in the morning and even turning during the night is a struggle as he has to stop himself from rolling of the bed.

Rotate Regularly - Rotate head to toe weekly for the first three months, then every month thereafter

Your mattress should be rotated on a regular basis as this is the easiest way to prolong and increase the longevity of your mattress. The main benefits to regularly rotating your mattress is the continued support and comfort while reducing any risk of sagging that may otherwise occur


This product is unlikely to cause any sort of allergic reaction. Ideal if you suffer from any sort of allergy problems

Comfort Grade - Medium

A Medium firmness mattress is the most common build offered due to the range of suitability offered in such a mattress. This type of mattress will be better suited toward averagely weighted people, while lighter people should opt for a medium-light, and heavier people considering a medium-firm.

Made in the UK

These are made and manufactured in the UK, meaning that they all meet the same exceptional quality and durability that we expect from genuine UK manufacturing.

Sumptuous pillow top

Posturetech spring mattress

Exclusively to Sealy, the posturetech range offers enhanced comfort and support using their patented spring system

Latex fillings

Smart Fibres

Questions and Answers

What is the best matress protector you can bye for £40 or under

Answer: Hi , It depends on what size you are after. For a double, we offer 'The Mattress Protector That Loves To Be Washed' which is under £40. The link is as per below: This has a review rating of 4.8 out of 5 and is a popular purchase with our customers. I hope this helps. Many thanks for your question.

Do you take away the old mattress?

Answer: Hi , We take away old mattresses at an additional charge. This service can be added to your order upon checkout, or asked for in store. Thank you for your question.

Is this mattress the one that received Best Buy for Which?

Answer: Hello , This is a new and exclusive new sealy mattress. This will not have received this. Many thanks for the question.

What is the guarantee please.

Answer: Hello, This will be a one years warranty and a eight year guarantee option through checkout. Many thanks for the question.

Hi how many springs does this mattress have thanks 

Answer: Hello, Mattress is made up of the Core support system which consists of 620 springs. Many thanks for the question.

Can this mattress be turned over, not just rotated, and if so does the topper come away with a zip for example to be replaced on the other side?

Answer: Hello, This can only be rotated as the topper is not detachable. Many thanks for the question.

How many springs are there in total in this mattress?

Answer: Hi , There are 660 springs in this mattress. Thank you for your question.

Is this delivered rolled?

Answer: Hello, This will be delivered as seen. Many thanks for the question.

What is the depth of this mattress?

Answer: Hello , This will be 34cm. Many thanks for the question.

Customer Reviews

Based on 15 review

Bad bad product

Me and my girlfriend bought an ex-display king-size for what appeared to be a very good price. To begin with it was very comfortable and looked the part, I was very pleased. Four months in and there are very visible indentations on both sides of the bed. I am only ten stone!! This is in my opinion is totally unacceptable for the four hundred and odd pounds we spent at the reduced price, Never mind the full NINE HUNDRED POUNDS full price!!! Now my back hurts as I'm sinking into the mattress. I could have these levels of "superior" discomfort for fraction of the price.....


Bad for your back!

I bought this mattress only a couple of years ago and was ecstatic at first. In less than a year, we noticed that when both of us where in the bed, we rolled into each other and there was no support. After another year, I’ve constantly got a bad back from holding myself in bed to conpensate for the rolling. We thought the mattress was a bit softer than we’d been used to, but this is a step too far, especially given the price we paid! Neither of us are heavy people either! Sealy are normally pretty good, but they’ve gone pretty wrong with this one.


So good we reordered!

We bought this mattress about 2 weeks ago and already we are bedded (!) in and so pleased with our purchase. We actually bought this mattress in super king size 3 years ago but due to moving house we have had to replace our bed with a king size instead and had no hesitation in ordering the same mattress as it’s just sooo comfy. We ordered a sealy mattress as after staying in a hotel and sleeping on a sealy mattress we just had to! Great buy.. great value and a great kip! Will probably order again if they are still making them in a few years!


Dips Badly with use

We bought this bed New Year’s Eve 2016, 3 years ago, we are average sized adults and normal weight. The mattress dips badly on both sides despite rotation, Dreams sent someone to observe our concerns and measurement of the dips in the mattress were apparently within tolerance. We paid £1k for this king size and a further £85 for a 10 year warranty. We have constant back ache and our last email to Dreams was never replied to. Avoid purchasing this mattress, as others have stated it develops indentations very quickly.


Don't go for the Mattress protector option

We got this bed about 3 weeks ago. The first 2 weeks, the bed was too hot, and rustled every time you moved. We realised the plastic mattress protector we were given for the extra warranty was the problem; a cheap plastic sheet that didn't fit the bed properly, and was like the one's you give to 2 year olds in case they wet the bed!!! We have changed this now, I guess this will invalidate the warranty, but the bed is great now. We took the Super King Size with Ottoman option which is really useful.


Only 1 week old and very dissapointed

Bought this mattress one week ago and already its become very soft and a deffinate dip were i sleep, it is visable even by looking at the bed from the foot end.When laying in it it hurts your back and hips forcing me back in to the dip . From what i am hearing i dont hold much confidence getting this sorted but i do how ever suffer ms and as a member of the ms society i will take this further its a disgrace for a brand new bed to feel so old within one week


Poor support

I bought this 4 months ago, at first it was comfortable but after just 1 month the bed dipped and lost it's support. Having had someone come to check it (with a piece of string!!) I was told there was not a problem. I wish I could say that about my back. Despite turning it regularly it makes no difference. The bed also wobbles about when either of us turn over which disturbs our sleep.


Bouncy and hot

We bought this a month ago but have struggled to get on with its bouncy, springy firm mattress. I can feel my husbands every move and the latex topper can be too hot . I'm looking forward to changing this to a natural material bed which doesn't hurt my joints. Husband loves it as it strangely keeps him cool and is firm enough for his weight. Real shame as I could do without the hassle!



After a while the mattress mounds into a permanent dip despite making the effort to turn it on a regular basis. Uncomfortable for even a heathy back. Very disappointed that Dreams would sell such rubbish.


Perfect nights sleep

This mattress is incredibly comfortable. It doesn’t sink like other mattresses and has exactly the right amount of firmness to support the body without feeling like a board.


Brilliant service and products

We recently bought 3 beds and a mattress and we are very pleased with them. We have had lots of good comments about out new beds.



Very pleased with my new Mattress/Bed. It is so comfortable and seems to keep you at a good body temperature. Highly recommend.


Expected better

I am finding this mattress to be too hard when laying on this mattress and would like to upgrade due to back pain.


Super comfy!!

I’ve had this mattress about 5 weeks, and I love it, it really is so comfy! Impressed