Silentnight Cromwell 800 Pocket Eco Mattress Rated 5/5 based on 134 customer reviews
Silentnight Cromwell 800 Pocket Eco Mattress

Silentnight Cromwell 800 Pocket Eco Mattress

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Becky's Thoughts On The Silentnight Cromwell 800 Pocket Eco Mattress

The Silentnight Cromwell Mirapocket Mattress is one of the highest rated mattresses sold by Dreams. The mattress has a mirapocket support layer which is Silentnight's version of pocket springs. Pocket spring support systems are some of the best in the industry, besting reflex foam and open coil traditional spring units on body contouring and overall support. 

The comfort layer of this mattress, that's the bit at the top of the mattress that separates you from the springs, is made up of eco comfort fibres. These fibres are recyclable and made originally from used water bottles and are luxuriously soft. great for you, and the environment.

Due to the components used within this mattress, it is hypoallergenic and has a firm support. The product is also one sided, meaning it does not need to be flipped, just rotate using the included handles to ensure proper settlement of springs and fillings.

To help showcase just how much trust the brand and retailer both have in this product, you get an optional 8 year guarantee available. The average mattress lasts 7 years so you've got lifetime/lifespan protection to get you past that period.

The Cromwell is an upgrade a previous bestseller called the Delamere Mattress. The spring count and firmness are both  similar but with eco comfort fibres used as a comfort layer instead.


What Makes The Silentnight Cromwell 800 Pocket Eco Mattress Great?

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

800 pocket springs (King)

800 Pocket springs is a compromise. It is a far better choice than an equivilent open coil product but is a little on the low end in terms of the volume of springs. Support should be acceptable, but if there is an option for 1000+ at a similar price, it is worthy of paying a little bit extra

Advanced Mirapocket zoned support – to provide superior spinal alignment and posture

The Silentnight Mirapocket zoned spring system is a clever combination of springs and foam, designed to give you the best sleep of your life. It’s a mattress that’s designed to give you the perfect balance of comfort and support.

Comfort grade – Firm

If you find yourself suffering from back pain then you may want to look at an orthopaedic (fancy word for firm) mattress like this one here. Firmer surfaces put less stress on muscles while sleeping which might be exactly what you need to help your back

4 Handles

Handles make it easier to flip and rotate a mattress. Mattresses should be rotated and/or flipped every 3 months, without handles this can become cumbersome and so consider this a plus point for saving hassle down the line.

Metal Air vents

A decent height for padding material representing a barrier between you and the springs that make up the core of the mattress. This type of mattress should be comfortable as a result of the depth of this soft and comfortable material

Exclusive Silentnight EcoComfort cooling technology – breathable materials for a fresher sleep

Eco comfort fibres are made completely from recycled materials. specifically plastic bottles. While plastic bottles might not immediately seem comfortable, that's the base material, not what it becomes. What you get from this material as an end result is a soft woven fabric that is luxuriously soft and extremely comfortable making it ideal for the environmentally conscious as well as those looking for a quality nights sleep.

Easy-care non-turn mattress

While the mattress does not require flipping, that does not mean that it should not be rotated from head to toe. Rotation serves the benefit of preventing dipping and prolonging the lifespan of the mattress due to the easement of typical divots that would otherwise occur due to your typical sleeping position on a nightly basis.

Silentnight Care Guide

Silentnight offer care instructions to help get the most from your new addition. The instruction cover maintaining its appearance, removing dirt or stains and what to avoid such as water, hot surfaces or actions that could remove a fire-retardant coating. These instructions can come coupled with the warranty. It is important to follow the care instructions as not to void this warranty.

About Silentnight

Silentnight is considered the UK's most trusted bed brand. As a certified Superbrand going on 13 years they have exceptional knowledge and experience in quality manufacturing. They have spent over 70 years supporting British manufacturing and design, their dedicated UK employees put care and attention into handmade beds from the best materials around.  They test each product to ensure they are made to last and safe to enjoy.   "It’s quality. It’s trust. It’s Silentnight"

Customer Reviews For The Silentnight Cromwell 800 Pocket Eco Mattress

Based on 134 review

Comfortable sleep

I bought this mattress about a month ago to replace my old sealy mattress. I had never had a silent night mattress before and I was a little dubious. The sales staff were excellent advising me on the quality and firmness of the mattress as due to coronavirus I couldn’t come to the store. If arrived at exactly the time agreed and they removed my old one for me. I was given a mattress protector to put on Incase the mattress didn’t suit. I had no such worries. It was very comfortable and was of medium firmness. Great experience overall. Wouldn’t hesitate to reorder from this company. (Dreams). Thanks again


***WARNING ?--- DO(N'T) BUY IT***

Best mattress ever. My wife and I tried lots of different mattresses and this Cromwell, wow, you have to sleep on it. I was struggling with the back pain every morning I wake up but since we've received our comfy mattress, I feel refreshed every morning. No pain anymore. ***WARNING ?*** I think it's very important if you're going to purchase one. £££IT WILL AFFECT YOUR CAREER£££. Yes, believe me. Because, next morning you'll find yourself freaking comfy and when its time to wake up, you'll shout: ***K THIS JOB. I WANT TO KEEP SLEEPING.


No more aching back!

I have been suffering waking up with a stiff aching lower back so I decided to invest in a long overdue new mattress. At dreams my husband and I lay on the mechanical bed to see what type of mattress was required. This greatly narrowed it down to medium/firm mattress. After trying out several mattress we both chose the silent night mirapocket. It looked great and mostly it felt like it would do the job. So far so good as I no longer wake up with back ache and I look forward to getting into bed. Long overdue and money well spent.


Quality and eco friendly

I was after an environentally friendly and vegan mattress which really narrowed our selection down. Some were filled with wool and most are full of chemicals. This one ticked the boxes and was comfortable when we tried. Since receiving it we had a good nights sleep straight away, no time needed to settle. Its nice and firm without being hard and uncofortable. Very happy and for a good price too, there were lots of more expensive choices but this is perfect.


Best night sleep I’ve ever had!

I visited the Braintree store a few months back and dealt with a lady called Lisa, she was amazing and really helped me find the perfect mattress and bed frame. She took me through many options but this was by far the comfiest mattress out of them all! And also the most reasonably priced. Every night I look forward to getting into bed, and I always have a wonderful nights sleep. Highly recommend.


Never slept better

I purchased this mattress along with the silentnight half ottoman base about 6-8 weeks ago. It is so comfortable, its unbelievable. Its a firm mattress so it definitely supports mine and my partners weight. Even though its firm, it has a nice soft and bouncy surface to it. Its perfect for our backs aswell. Overall, we're really pleased with it



I bought this as my old matress was old and I had started dreading going to bed as I would be waking up to turn over as my back was in pain. This new mattress is heaven ! It’s firm, supports your back and yet is soft so you feel your body is being held in a cloud ..soooo comfy. Back ache has improved and my quality of sleep. Would highly recommend!


Silentnight 800 Pocket eco mattress

Thought we were getting a medium mattress as signed in the shop. They delivered a firm mattress. After calling to ask why, was told they only did this mattress in firm. Was told to try it for 4 weeks first. In the process of doing this and pleasantly surprised. So far, my back has been a lot better. It really is a great mattress so far.


Saved my back

I bought this almost a month ago and although I was slightly apprehensive of the rather large buttoned tufts I was pleasantly surprised that within a couple of nights my sore back had disappeared. The mattress does a fantastic job at realigning my back and it has improved the quality of my sleep lots. Would definitely recommend



We bought the mattress to enable my wife, who suffers from arthritis, to have a comfortable nights rest and the mattress has certainly achieved this objective. Hence 5 stars awarded. However I am fully active and find that when lying on my back I arise with stiffness in the morning which wears off with activity.



I bought this mattress because the one I’ve been using for the last number of years was too soft, thus contributing to back problems. After using the free facility offered by your showroom which automatically recommends the ideal mattress for each individual, my back pains have gone and I am sleeping much better


top quality

what a fantastic mattress. I never realised a good mattress was so important. very firm but I sleep like a baby. not the cheapest but the old adage you get what you pay for is so true. I have never slept so well. great shop service and the delivery guys were excellent too. cant recommend highly enough


Do your back and your planet some good

So far so good. I have only slept on the mattress a handful of times but I am pleased with how comfortable it is. I have an expensive memory foam mattress on another bed which I love but this Silentnight seems to be just as comfortable. Hopefully it is also more environmentally friendly.


Very comfortable

Bought this as a combination with an ottoman style bed - very comfortable and a good night’s sleep. Unfortunately as we tried out the mattress in combination with a different bed frame in the shop I didn’t realise it would be so high which has given me problems as a very short person!!



I purchased two of these a few weeks back now for my teenage boys, they are so comfortable have perfect support I’ve even tried it out for a night myself to double check, 100% would buy one of these again totally recommend what a great mattress definitely a thumbs up from my household.


Silentnight Cromwell 800 Pocket Sprung Mattress

To change our mattress was the hardest choice since it was beautifully comfortable but so very heavy to handle. We chose this mattress for the comfort and manageable weight to turn it around. Now three weeks since delivery, very comfortable simple turning around Excellent Choice.


Finally a good night’s sleep!

We had this mattress delivered on the first day of lockdown 2.0. It is very comfortable and I found my backache disappeared within a couple of nights. It is firmer than our old mattress and took my husband a couple of weeks to get used to but he said he's happy with it now.


Great value mattress

I was a bit hesitant at first about spending that little bit more than usual on a mattress but after sleeping on it for a few weeks now i am glad i did so, you can feel you've had a quality nights sleep, comparable only to a few higher end hotels i have stayed in.


Great night’s sleep

After three minutes on the ‘test bed’ we were shown four mattresses that ‘fitted the bill’. It was no contest and we have been delighted with our Cromwell Mirapocket mattress. The change was clearly overdue and we will not be leaving it so long next time.


Absolutely dreamy

Wow I am so happy with my new mattress from Silentnight. The Cromwell mirapocket mattress is perfect for my back and I have been getting a fantastic night’s sleep. Do yourself a favour and pick up one of these top class mattresses at an affordable price.


Excellent mattress!

Is labelled as a medium but I would say it’s closer to a firm. I’ve had some lower back injuries in recent years and this mattress has really helped with getting a good nights sleep with no stiffness in the lower back the next morning.


So comfy whilst being supportive

I recently bought this mattress, and as I was ordering it online do to covid I was worried it wouldn't be supportive enough for my back. However its firm but comfortable like sleeping on a cloud!!! The best mattress I've ever had!!


Getting the best sleep

This product is fantastic. I have owned many mattresses and stayed in many hotels but this mattress is definitely the best that I have experienced. Definitely gotten my moneys' worth. Ideal for people who lean towards a firmer feel.


Great mattress

We have had this over a month now, it’s firm but what we needed due to back problems. We have found that we sleep better now and wake up in less pain! I would recommend this to anyone especially if they wake up with stiff backs



Bought this mattress a month ago and have never had a better nights sleep. Would also like to compliment the customer service from the Cambridge store too. Would recommend this mattress for anyone needing a firm mattress.


Great firm support mattress

A lovely firm mattress, great support on your back. Brilliant when paired with a neck support pillow for a great nights sleep. I am a side sleeper most nights, sometimes front/back and can comfortably sleep on all sides.


Just what I wanted.

Just what I wanted - perfect night's sleep, but did arrive with scuff marks that I could not get off. I did not complain as I needed the mattress to sleep on immediately!! With the mattress protector it is out of mind.


Unexpectedly amazing.

Had our 3 mattresses for a month now and all I can say is they have exceeded expectations. In the past have memory mattress but this even beats them. It is very firm but my back feels so good in the mornings.


Excellent Comfort and Quality

It’s extremely comfortable and excellent quality Bought for grandsons bedroom who is twenty two and nice to sleep on a comfortable bed for a change Thinking about getting one for our bed in the future



Desperately needed a new mattress & bed Purchased the Sana ottoman bed & the Cromwell mattress Had it a week now & I’m sleeping like a baby It is leaning more to the firm side but I like that



Fantastic service, quick and efficient. The mattress is excellent quality, very supportive and comfortable. Best night's sleep in a long time and all aches disappeared after my first nights sleep



Brilliant service from the Llandudno staff, they were extremely helpful in finding us the perfect mattress and sorting out a direct debit for us, extremely pleased with the service at this store


So so comfortable

Our old mattress was 16 years old so thought it about time we replaced it. My husband has sciatica and the old matteress didn't help. This one is so comfortable and the staff were very helpful


Cosy bed

Cannot believe what a brilliant night sleep we have had since I ha I g our new bed It’s amazing My shoulder and back pain have gone completely The mattress has made a massive difference


silentnight mattress

Both myself and my partner suffer back problems over the the years we have purchased many mattresses some good some not so good this is without doubt the best mattress we have ever slept on.



I’m very happy with this purchase. The mattress is very comfortable and is good for back problems. My back pain has got better thanks to this mattress. Thanks to Dreams for your services.


great nights sleep

at last a mattress that doesn't give me a back ache each morning, from the very helpful and knowledgeable staff to the really helpful and polite delivery guys, glad I chose this company.


So comfortable

We bought this mattress online without being able to test it and it is an amazing mattress. We bought it for our son and he is so pleased with it and is sleeping so much better


Amazing product

I bought this few weeks ago and im so happy that I did. my back pain is nearly gone i sleep like a baby!! I'd never go back to my old one. Highly recommend it to everyone.


Comfy and Cosy

Had my new mattress for three weeks now and it is brilliant. Very comfortable yet supportive. Along with new pillows and duvet it is like sleeping on a cloud. Wonderful


Excellent service

Easy to order and delivery was stated as 7 days. We received it in 2 days which was excellent! and the fellows that delivered were excellent and very accommodating.


Amazing Comfort

The comfort of this is so amazing and I realised how much i needed a new mattress. The comfort of this has me thinking twice about getting out of bed every morning.


Spot on

This was the BESTEST decision we have made oh my days my partner sleeps for hours so that means I get to have a whole night sleep the comfort is out of this world


Silent night mattress

Absolutely amazing!! The best mattress I’ve ever bought, it’s soft top layer combined with its firmer mid layer is perfect!! Never had a sleep like it!! 10/10!!



I have managed to have a peaceful sleep since getting this mattress. It is nice and firm people so that I don't sink in too much when I sleep. Best purchase.


Gives a good nights sleep

Have been sleeping on this mattress for the last two weeks and have surperb nights sleep, did not realise how bad and uncomfortable the old mattress was.


supportive and relaxing

Delivery was excellent and actual mattress came up to expectations. Comfortable and supportive and very relaxing. Certainly gave us a good nights sleep.



The mattress that we bought is very comfortable and we do not need our electric blanket since buying it we have been sleeping right through the night.


Best sleep in years

had lower back pain for about four years, first morning after sleeping on this mattress, no more back pain, would give 10 stars if that was an option


Very comfy

The in store machine picked this mattress out as the best for my wife and I. Slightly harder than previous mattress, but sleeping like a baby now.


Super comfy

Great mattress, very comfortable. Delivery was great too and both guys were really helpful in the set up. Hassle free and will definitely be back


So comfortable!

The best nights sleep we have had in years! So glad we went with this product. It’s so comfortable, really soft and not hard at all.



I have now slept on this mattress for about 4 weeks and it is still really comfy. I also don't feel a thing when my partner moves


Perfect product

I brought this, as was recommended by a friend, and I can say I'm not disappointed. Its comfy and havent had back problems since.


Super Comfy

Really good mattress, really comfortable and you can roll over in bed without disturbing the person next to you. Would recommend.


Great experience, great mattress.

Great experience in the store. The assistant Abdul was very patient and helpful and helped us choose the right mattress for us


Amazing comfort and wonderful night sleep

Great mattress. So comfortable and me need for a topper. Absolutely delighted. Dreams were great despite the Covid issues too.


Excellent mattress!

The mattress is very firm and comfortable. I’ve had some of the best nights of sleep ever with it. Cannot recommend it enough.


Comfiest mattress

Comfiest mattress ever! Slept like a dream since we’ve owned it. Would highly recommend. My back pain has completely gone.


Expansive but not expensive

I purchased this mattress to upgrade from a double to a king. Also wanted a firmer density and it did the trick admirably.


Great nights sleep

I bought this mattress 3 weeks ago and I can finally sleep and not wake up with bad back pain best decision I ever made.


Comfortable mattress

We have had it a month now, and can say it's very comfortable. No sagging, or rolling together. It's just what we wanted


What a mattress

Only had for two weeks but a significant advance on my old mattress. Comfortable and no roll together. Just fantastic.



Had this mattress for a few weeks now. Very comfortable. Most importantly my partner has not woken up with backache!


Silent night mattress

The delivery team were fantastic, gave us clear instructions about care of the mattress The mattress is perfect


Best sleep in a long time

Very comfy sleep after going in store using there technology to see what mattress is best for me and my partner!


New mattress

Had it a few week now,,is better than my old one but still getting us to it..cooler in this hot weather though.


Awsome mattress

Nearly a month ago now we got this mattress and we have never slept so well. So well worth spending a bit more.


So comfy

I have used this mattress for a month now and I find it so comfy and cool. I wouldn't hesitate to recommend it


feeling refreshed every morning

really nice mattress had its for a few weeks now and honestly feeling more refreshed and awake every morning.


Perfect new mattress

Very happy with mattress - quite firm but body sinks into it to give a lovely nights sleep. Cannot fault it


Very comfortable

Very comfortable mattress which was recommended by the assistant in the shop afterdoing the test on their bed



Finally bought a new mattress! I know you should try before you buy but we took the gamble. it paid off!


Silent night Cromwell Mattress

Really comfortable, my wife has brittle bones and has found it to be the most comfortable bed she’s had


My new mattress!

I am very pleased with my purchase, it is most comfortable and I have been sleeping better. Love it?


So good!

This mattress is firm but still so soft. Have slept amazingly since purchasing. Highly recommended.


So comfy!!

I brought this a few weeks ago and have slept so well on it even during the hot weather we’ve had


Sweet oblivion

This is the comfiest mattress I have ever owned. The quality of my sleep has never been better.


Very pleased. A good nights sleep guaranteed.

Very pleased. I have a painful hip condition which has been relieved since using this mattress


Mattress Med/Hard

Excellent product! Very comfortable enabling a great nights sleep. Worth every penny it cost!


Really comfy

Easily the most comfy mattress I’ve ever had, really good quality and im sleeping much better



First mattress in years and so pleased we got a new one. This one is perfect, so comfortable


Restful sleep

Love my new mattress, my sleep has been so much better and I no longer ache on a morning.


Great bed

Best nights sleep I’ve had in a long time very comfortable did not want to get out of it


Best sleeps ever

I bought this mattress and bed a few weeks ago and I have had the best sleeps ever


Happy Dreams

The wife loves it no more aches and pains well happy spot on. And a great price.



Had problems with my back in the mornings. This mattress means I get up pain free


Silentnight Cromwell 800 pocket eco mattress

Comfortable sleep, though heavy to lift for one person, should only top and tail


Very comfortable mattress

Medium firm, very comfortable and very spacious in the superking size we ordered


Comfortable sleep

Excellent mattress, firm and comfortable. We have slept well from the 1st night.


Mattress of Dreams

Very comfy, can need some time to settle but beat nights sleep I’ve had in ages


Good stuff

Feels, looks and smells great. Delivery was excellent they were very helpful.


The perfect mattress

Great mattress, would highly recommend. Not had a bad nights sleep on it yet!


Soft and comfortable

This mattress really is gorgeous. Material is soft and fantastic to sleep on


Very Comfortable.

Selected a medium mattress which met expectations perfectly. Excellent fit.



The silent night matteress is very comfortable abd delivery was very quick


Great Mattress

Really comfortable, much better than the Memory Foam mattress it replaced.



I went in the buy just a mattress got this one free with my bed fantastic


Great and Comfortable Mattress

We recently purchased this mattress along with a new bed and we love it.


Good quality, quite firm mattress.

Good quality, quite firm mattress. No movement when hubby moves around.

Questions and Answers About Silentnight Cromwell 800 Pocket Eco Mattress

what is the difference between a memory foam matress and a delamere miraport matress.

Answer: Hello, the Silentnight Chantilly, Ashridge and Brampton all contain body moulding memory foam where as the Silentnight Delamere, Glenmore and Langley do not have memory foam. Memory foam is used to help relieve pressure points and it does give a different 'feel' to the mattress. I would recommend visiting your local Dreams store to try out the different mattresses to see what you prefer. I hope this helps.

do you take the old mattress away

Answer: , When our delivery team deliver your new mattress or bed frame, they are also able to take away and recycle your old mattress; this option can be selected at the checkout. Prices for this service are as below: Single Mattress - £25 Double Mattress - £35 King or Super King Mattress - £40 Kind Regards, Dreams

why does this mattress not need to be turned over

Answer: Hi , this mattress is a single sided mattress so it does not need to be turned over. All the fillings you need for a great nights sleep are in the top of the mattress. The mattress should be rotated frequently but not turned over. I hope this helps. Many thanks.


Answer: Hello, Our showrooms are for display purposes only, if you call our telesales line, you can see if it is available to pick up at your local depot. Many thanks for the question.

Had you mattress 6 days. Although very comfortable im finding it very hot. It says has cooling method to it. Why so hot?

Answer: Hello , I am sorry to hear this. Please call Customer Service on 0344 292 0000 and they will be able to help you. Thank you for your question.

Can bed be taken upstairs to bedroom when delivered

Answer: , This mattress can be delivered to the room of your choice, this includes upstairs. Many thanks Dreams

Is this an orthapedic type mattress?

Answer: Hello, Orthopedic will be under our very firm comfort grade. Many thanks for the question.

Can this be used on a slatted base

Answer: Hello , This can be used on a slatted or sprung base. Many thanks for your question.

How many pocket spring are there

Answer: There are 800 pocket springs in the Silentnight Delamere mattress. I hope this helps.

What is the maximum supported weight? Could a person weighing 140 kg use this mattress without a problem?

Answer: Hi , We do not have set weight limits on our products. Thank you.

How many pocket springs are in the king size please

Answer: Hi, a King Size Delamere mattress contains 800 pocket springs. Many thanks.

What is the weight of this mattress (double) please. 

Answer: Hi , This is 29.3KG. Thank you for your question.

Is there any latex anywhere in this mattress?

Answer: Hi, there is no latex at all in this mattress. Many thanks.

how many airsprung pockets in this mattress

Answer: Hello, this mattress has 800 pocket springs. Many thanks.

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