- ECO COMFORT FIBRES : Our EcoComfort Fibre layer is made with sustainable fibres, which are extra breathable, to keep your sleeping environment at a comfortable temperature; Encased in a super-soft, breathable quilted fabric and ideal for planet savers
- LONG LASTING SUPPORT: The Mirapocket layer uses 1200 pocket springs which independently respond to movement and weight, delivering unique tailored support and ‘no roll’ together, minimising partner disturbance meaning you can get a more restful night’s sleep with fewer waking periodsMirapocket springs offer zoned support, scientifically proven to improve your spinal alignment and posture
- SOFT KNIT COVER : For additional comfort, the soft knit cover is perfect for sleepers who prefer a smoother sleep surface and a little extra cushioning
- HYPOALLERGENIC: This anti-dust mite and hypoallergenic mattress is allergy-friendly, offering you a clean and fresh night’s sleep
- MEDIUM COMFORT : not too soft, not too firm- a safe shout for side sleepers Double side for double the durability and support
- UK’S MOST TRUSTED SLEEP BRAND: All our products are handmade in the UK and made to order, bringing your beautiful hand-crafted quality products, using the latest innovations; We lead the market in sustainability too and are proud to be a carbon neutral business
Silentnight 1200 Eco Comfort Mattress | Pocket | Medium Firm | King
Buying Options
Silentnight 1200 Eco Comfort Mattress | Pocket | Medium Firm | King
£508.00
in stock
PRIMEPRIME
Amazon.co.uk
2 new from £508.00
Highest Price
£513.99
Amazon.co.uk
September 23, 2025
Lowest Price
£416.13
Amazon.co.uk
October 8, 2025
Since September 11, 2025
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8 reviews for Silentnight 1200 Eco Comfort Mattress | Pocket | Medium Firm | King
Customer reviews are sourced from third-party websites. We cannot guarantee their authenticity or accuracy.
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Rix.Lumb –
Fantastic comfort mattress, pretty dammed heavy and deep.
Expensive but well made and well worth it.
The £30 Haul away service for the old mattress (same size) DID not happen.
The new mattress was lifted to upstairs bedroom by the guys, they DID NOT unwrap it and take away plastic and they would not take away the old one…..as it had not been ”prepared/wrapped”?
There is nothing about this, in the info for haul away service…
Even though we could of used the wrapper to cover the old mattress , they wanted to be away as they only have 15 minutes to deliver/remove and they were already behind schedule. (last 30mins of time slot)
from amazon web site on the matter:
Mattress – Unpack and Haul Away😒
Scheduled delivery, in the room of your choice.😊
Unpack the new mattress and place it on your bed.😒
Old mattress collection and packaging removal.😒
Please ensure your old mattress is accessible and any bedding is removed ahead of your delivery.😊
Service includes Instant Returns. Return your item for any reason during service delivery.
RL –
I’m reviewing this mattress after one year of ownership. The mattress is great quality and after 1 year is still firm, with no indentations or dips where we sleep, and no roll towards the centre. The edges are also still firm, with no roll. The king mattress is extremely heavy, which two fit gym goers struggled to get up the stairs and even to turn from time to time. We have it on a base of straight wooden slats (no flex), and the mattress feels more firm than medium-firm. Because of that, it has changed how I sleep, it makes my hips ache if I sleep all night as I used to on my side and I have become more of a front sleeper now. To be fair, in this new sleeping position, I find the mattress very comfortable and get a good night’s sleep. The mattress is very quiet, no noise from springs as you or your partner move. We find it far hotter than our old mattress, and no longer require an extra blanket at night in the winter. Price-wise, aim for sub-£500 in the sales (around Christmas). All in all, a very comfortable mattress that is wearing well, but it runs hot and is extremely heavy to lift.
Prof. M Roberts –
Probably the best spring pocket mattress in this price range. I’ve had x 3 of these type mattresses from SN over the last 25-30 years, they do the job, 800 to 1000 pcket spring, value for money, decent support, easy to wipe clean if there’s spills, heat retention is good, smells ok, functions as expected, lasts years if you look after it and give it a turn every once in a while, my last one lasted between 8 and 10 years.
When I go on holiday, all the beds are memory foam, and if they’re brand new, they’re great, very warm, very comfy, but if they’re a few years old, feels like you’re sleeping in a hole.
Dan B –
The small double mattress is definitely firm and topped with a quilted soft fabric.
The mattress arrived 10 days after initial order (as explained at checkout) in a fairly thick plastic that was not pierced and protected the mattress from getting stained or damaged in transit.
I can sit on the edge of this mattress and it not dip too much or lose its height.
My slipped disc has not given me any pain since sleeping on this mattress.
After purchasing at £288 I checked around to see if I could find t cheaper, I could not. In fact it seemed to usually retail circa £350-£450, hence the 5 stars.
A correctly described, quality product that was reduced in price and arrived exactly when the seller said.
I will update should anything change over medium to long term!
karich –
It’s a very comfy, well made mattress that feels safe of chemicals. There were no nasty smells. Relatively heavy so will need two people to manoeuvre. It is less firm than expected, but finding its supportive and getting a lot more quality sleep than on my previous mattress.
Zoe –
INCREDIBLE – one of the comfiest mattresses I’ve ever slept on. Would highly recommend
Naz 1981 –
Left it for a few weeks before reviewing. Very comfortable and getting a good nights rest with this mattress.
muhammad abdullah –
I bought this Silentnight mattress in November 2023, expecting reliable quality from a well-known UK brand. Unfortunately, it has developed a noticeable sag in the center after just a few months. The dip isn’t obvious when the mattress is empty, but becomes very noticeable when lying down — which is when it matters most.
It has become so unsupportive that it’s now causing me back pain, something I’ve never experienced before with other mattresses. I’ve used it on a proper bed frame, and it’s been well cared for, so this level of sagging is clearly not due to misuse.
Very disappointed that a mattress with a 5-year warranty is already failing in less than a year. I’ve reached out for support and hope the warranty is honoured — but based on my experience so far, I wouldn’t recommend this mattress if you’re looking for lasting support or suffer from any back issues.