Brand | Silentnight |
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Model Number | 25GECO135MM0001 |
Colour | White |
Product Dimensions | 190 x 135 x 25.5 cm; 24 kg |
Material | Polyester, Geltex, Cotton |
Special Features | Medium, Hypoallergenic, Geltex®, Fire-Retardant |
Item Weight | 24 kg |
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Silentnight Miracoil Gel Mattress | Medium | Double
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Delivery & Support
Select to learn moreAmazon
Amazon offers a variety of services on large items like unpack, installation, assembly and recycling.
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- Item can be returned in its original condition for a full refund within 30 days of receipt
Our specialist Customer Support for large items dispatched from Amazon is on hand to help with your order. Contact us via phone or chat 7 days a week.
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- Scheduled delivery, in the room of your choice.
- Unpack the new mattress and place it on your bed.
- Remove all packaging for recycling.
- Service includes Instant Returns. Return your item for any reason during service delivery.
- 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.
Purchase options and add-ons
Brand | Silentnight |
Size | Double |
Product dimensions | 74.8L x 53.1W x 10Th centimetres |
Top style | Gel Top |
Cover material | Knitted Cotton-Polyester Blend |
Number of layers | 2 |
Fill material | Gel Memory Foam |
Special feature | Medium, Hypoallergenic, Geltex®, Fire-Retardant |
Colour | White |
Coil type | Pocketed Coil |
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About this item
- BREATHABLE GEL LAYER : Ideal for twisters and turners. Geltex is an intelligent gel infused comfort filling for enhanced breathability and a cooler night's sleep
- LONG LASTING SUPPORT : The Miracoil spring system provides zoned support for perfect spinal alignment and offers a firmer spring support
- HYPOALLERGENIC : Offering you a clean and fresh night's sleep
- MEDIUM COMFORT : not too soft, not too firma safe shout for side sleepers
- HANDMADE IN THE UK : by the UK's most trusted bed brand
![]() Silentnight products sold and dispatched by Amazon (UK) carry the Silentnight Warranty. Learn more. |
![]() Finding it a challenge to pick the right mattress? We’ve created this quick-fire guide to help you discover the mattress of your dreams with total ease. If you have any questions relating to our products you can call us on 01282 850000 or email us at amazon@silentnight.co.uk. For all general queries about returns, please contact Amazon.co.uk directly. Learn more. |
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- Sustainability features for this product
Sustainability features
This product has sustainability features recognised by trusted certifications.Safer chemicalsMade with chemicals safer for human health and the environment.As certified byOEKO-TEX STANDARD 100
STANDARD 100 by OEKO-TEX requires every component of a textiles product – including all thread, buttons and trims – to be tested against a list of more than 1,000 harmful regulated and unregulated chemicals that may be harmful to human health. The assessment process is globally standardised, independently conducted and updated at least once a year based on new scientific information or regulatory requirements. Certification focus: #ProductSafety and #ChemicalsUsed.Certification Number23.HCN.13362
From the manufacturer

Silentnight Miracoil Gel
The Silentnight Miracoil Gel mattress is ideal for twisters and turners. Geltex is an intelligent gel infused comfort filling with a bounce back sensation that actively responds to your body as you sleep.

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How do I clean my mattress?
We always recommend using a mattress protector. You should not use detergents or chemical cleaners on your mattress as this may damage the fabric and stitching. Please do not remove the cover to clean the mattress, the cover is not removable.
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How often should I turn my mattress?
We recommend that during the first six months your mattress should be turned every two weeks and then monthly thereafter. You should alternate between turning the mattress over and rotating it from top-to-tail to ensure even settlement.
Shop Silentnight Eco
Geltex | Comfort filling | Geltex |
Medium/ Firm | Firmness rating | Medium/ Firm |
Miracoil | Support system | Miracoil |
| Hypoallergenic? | |
Back & Side Sleepers | Perfect for... | Back & Side Sleepers |
27.5cm | Depth | 28.5cm |
Geltex | Comfort filling | Geltex |
Medium/ Firm | Firmness rating | Medium |
Miracoil | Support system | 1000 Pocket |
| Hypoallergenic? | |
Back & Side Sleepers | Perfect for... | Side Sleepers |
27.5cm | Depth | 28.5cm |
Geltex | Comfort filling | Geltex |
Medium/ Firm | Firmness rating | Medium/ Soft |
Miracoil | Support system | 2000 Pocket |
| Hypoallergenic? | |
Back & Side Sleepers | Perfect for... | Side Sleepers |
27.5cm | Depth | 31.5cm |
Geltex | Comfort filling | Geltex |
Medium/ Firm | Firmness rating | Medium |
Miracoil | Support system | 3000 Pocket |
| Hypoallergenic? | |
Back & Side Sleepers | Perfect for... | Side Sleepers |
27.5cm | Depth | 37.5cm |

Product information
Technical Details
Additional Information
ASIN | B07H55LF8F |
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Customer Reviews |
4.2 out of 5 stars |
Best Sellers Rank | 53,383 in Home & Kitchen (See Top 100 in Home & Kitchen) 176 in Mattresses (Home & Kitchen) |
Date First Available | 6 Sept. 2018 |
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Silentnight Miracoil Gel Mattress | Medium | Double
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This item Silentnight Miracoil Gel Mattress | Medium | Double | Recommendations | |||||
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Price | -36% £286.99£286.99 RRP: £449.00 | £286.83£286.83 | -35% £318.99£318.99 RRP: £489.00 | £299.95£299.95 | -32% £250.99£250.99 RRP: £369.99 | -16% £255.99£255.99 Was: £305.99 |
Delivery | — | — | — | Get it as soon as Tomorrow, Mar 27 | — | — |
Customer Ratings | ||||||
Sold by | Amazon | Amazon | Amazon | mattressonline | Amazon | juehong |
size | Double | Double | Double | Double | Double | Double(135×190×30cm) |
firmness description | Medium | Extra Firm | Firm | Medium | Medium | Medium |
construction type | Innerspring | Innerspring | Innerspring | Innerspring | Continuous Coil | Pocket Spring |
Important information
To avoid suffocation - Keep plastic packaging away from children.
Customer reviews
Customer Reviews, including Product Star Ratings, help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyses reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers say
Customers find the mattress comfortable and supportive for side sleeping. They find it a good quality product and value for money. However, some have issues with its weight. Opinions differ on firmness, quality, and heat retention.
AI-generated from the text of customer reviews
Customers appreciate the mattress' comfort. They find it soft and lovely to sleep on, with no pain or aches. The gel layer is great for side sleeping, as it sinks slightly into the shoulder and hips.
"...The springs under this are supportive. It gives a soft feel but with medium support overall, which we really like...." Read more
"...wide (needing an extra wide 45cm mattress protector) it is lovely to sleep on and has started working on my insomnia...." Read more
"...The mattress itself is fantastic in terms of comfort and the Geltex foam being both cooler and better able to spring back to shape than normal..." Read more
"...I go to sleep comfortably and wake up comfortably. It's actually helping me during the day too because I feel more energized...." Read more
Customers like the mattress quality. They find it comfortable and a good brand. Some say it's firmer than medium, but overall they are satisfied with the product. The mattress is described as long and heavy, but still a nice product.
"Medium hardness i would say its not soft/medium but a great quality mattress and is well built with side straps...." Read more
"...what you'd expect -- a solid "no-turn" mattress in a quite attractive package, refreshingly departing from the typical bland all-whites..." Read more
"...of course that’s not the question is the best one I’m really satisfied with the quality and of course is much more worth it more money then is it..." Read more
"Absolutely amazing bed, can't recommend it highly enough...." Read more
Customers are satisfied with the mattress' sleep quality. They say it provides good support for side sleeping, and is great for insomnia. It helps them wake up refreshed and full of energy.
"...Since getting this we have slept so much better, except for when our 10 month old wakes - even then, getting back to sleep is quicker...." Read more
"...firmer than advertised I’d say 6-7 out of 10 for firmness but sleep great so much so I’ve slept in for work a few times!!" Read more
"...it is lovely to sleep on and has started working on my insomnia. Although not so great sleep in this heat...." Read more
"...It's been a few days now and my sleep quality is brilliant. No more back pains, no more neck pains...." Read more
Customers find the mattress a good value for money. They say it's comfortable and a good investment for years to come. The mattress smells initially, but customers consider it worth the wait.
"...to order this online without being able to try it, it was well worth the risk...." Read more
"...The price was great for a mattress of this quality rather than the over priced ones from expensive bed stores." Read more
"...led to many a poor nights sleep, not so this mattress.. it's worth every penny especially if you sleep on your side...." Read more
"...Overall a good investment for years to come." Read more
Customers have different views on the mattress firmness. Some find it medium-firm, with decent fabric quality and good support. Others feel it's too firm and the latex makes them sweaty. The mattress is thick, making the bed higher.
"...by the mattress, we are both side sleepers and due to the firmness you don't sink and it does not adapt to to your body so your body is misaligned..." Read more
"...Find this one comfier, firmer than advertised I’d say 6-7 out of 10 for firmness but sleep great so much so I’ve slept in for work a few times!!" Read more
"Medium hardness i would say its not soft/medium but a great quality mattress and is well built with side straps...." Read more
"...This mattress is a 6.5/10 for firmness which is exactly what I'm looking for (as a side-sleeper) but if you sleep on your front/back, you might need..." Read more
Customers have different views on the mattress's quality. Some find it comfortable with good stitching and finish. Others say it's cheaply made and of poor quality.
"...First off, the quality is great. It is pretty much a top of the range Silentnight mattress, so quality is expected...." Read more
"...The materials and workmanship look top notch, everything seems to be made to last the lifetime of a mattress of this quality...." Read more
"...I wouldn't buy this again in hindsight and think it is terrible value at full price. It is extremely heavy but it didn't smell at all...." Read more
"...Quality of stitching and finish is very good, and priced at £500-600 it's certainly a very, very good choice...." Read more
Customers have different experiences with the mattress's heat retention. Some find it cool and comfortable, while others report that it keeps them warm and doesn't regulate their body temperature properly.
"...mattress itself is fantastic in terms of comfort and the Geltex foam being both cooler and better able to spring back to shape than normal memory..." Read more
"...Although not so great sleep in this heat...." Read more
"...I do find it warmer although it will be interesting to see what it’s like when we aren’t in a heatwave. It’s much more comfortable...." Read more
"...up with a sore back and pins and needles in my arms, and also be absolutely boiling...." Read more
Customers find the mattress heavy. It's difficult to move it up stairs and lift it into place.
"...As others have pointed out, it really is extremely heavy. This combined with the size make it very difficult to get up stairs...." Read more
"...It is very heavy and very deep and you have to buy special sheets for it to fit Delivery: Awful, amazon should be ashamed...." Read more
"...good purchase over time I have noticed a significant issue with the sheer weight. This mattress is by far the heaviest I have ever owned...." Read more
"So I’m marking this not quite full marks as it’s a very heavy mattress in excess of 40kg so requires 2 people to move it...." Read more
Reviews with images

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Top reviews from United Kingdom
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- Reviewed in the United Kingdom on 31 March 2015Size Name: KingStyle Name: 2000 Gel PillowtopVerified PurchaseOk - so buying a mattress online is difficult - you can’t try it out as almost all the 'brick and mortar' shops have mattresses made by big companies, but they are exclusive to them, so something you find in a store is impossible to find cheaper online. As such, we took a risk buying this, but based our decision on getting an idea for what we like by trying many other similar ones out first. I'm leaving this review to enable others to have more confidence in what is an expensive risky purchase.
First off, the quality is great. It is pretty much a top of the range Silentnight mattress, so quality is expected. My wife and I never got on with memory foam as it feels like you are sleeping in quick sand, so we knew to avoid this! Our previous Sealy mattress had a latex layer which we liked a lot, but we were upsizing to a king size bed so needed to replace it. The Geltex layer on this mattress is very similar.
The mattress does feel soft but this is just the Geltex layer. The springs under this are supportive. It gives a soft feel but with medium support overall, which we really like. The 'zones' really do isolate movement well, something our previous Sealy was not great at. The soft top is great for those who sleep on their side (like me) and reduces the risk of numbness.
Since getting this we have slept so much better, except for when our 10 month old wakes - even then, getting back to sleep is quicker. We really love this mattress and although it was hard to bring ourselves to order this online without being able to try it, it was well worth the risk.
Due to a miscommunication, this was left in the kitchen (not the delivery guys fault). As others have pointed out, it really is extremely heavy. This combined with the size make it very difficult to get up stairs. Make sure you get this left in the room you want it in!
- Reviewed in the United Kingdom on 16 February 2025Size Name: Super KingStyle Name: 1000 Gel PillowtopVerified PurchaseHad a similar silent night mattress which had seen better days. Find this one comfier, firmer than advertised I’d say 6-7 out of 10 for firmness but sleep great so much so I’ve slept in for work a few times!!
- Reviewed in the United Kingdom on 20 July 2021The mattress itself is very comfy however the process of getting the mattress was not the best. It got delivered but it was the wrong size, delivering double instead of King. Thee is nowhere on the information that states the size in terms of king. It does say 135cm. This mattress weighed 52kg and took a lot of effort getting up the three flights of stairs, luckily the delivery guys were brilliant and carried it up the first set for me. However the packaging was filthy and i didnt want it taken up any further. Then i realised it was the wrong size. Had to have the mattress in my house for another week in the hallway until it could be picked up. Then had to wait a further two weeks for the correct size to be delivered weighing in at 62kg. Once again the packaging was dirty and when i removed it, it marked all the lovely new bed. It took 3 of us to carry the mattress up the stairs and this was still a struggle.
I have marked the product as high stars because even though it is extremely wide (needing an extra wide 45cm mattress protector) it is lovely to sleep on and has started working on my insomnia. Although not so great sleep in this heat.
In addition i am extremely concerned the original mattress that went back didnt get put back for sale and just went straight to a skip because there was no care in carrying it out across the street to the van.This would be very shameful as there was nothing wrong with it and i hadnt even taken the packaging off.
- Reviewed in the United Kingdom on 30 March 2017Size Name: Super KingStyle Name: 2000 Gel PillowtopVerified PurchaseFirst the positive points.
Delivery was timely, efficient and the delivery guys managed the mattress up the stairs and into the bedroom (and it was a tight squeeze so they worked hard at it.) Despite warnings to the contrary, the mattress did not emit any odour at all - the only smell was that of newness in terms of the materials. The mattress itself is fantastic in terms of comfort and the Geltex foam being both cooler and better able to spring back to shape than normal memory foam (this after two previous memory foam mattresses. The materials and workmanship look top notch, everything seems to be made to last the lifetime of a mattress of this quality.
The negatives
The super-king version of this mattress is a monster in terms of being huge in standard dimensions but so deep that it really does take effort to manoeuvre...it is a very fit two person lift and I doubt we'll even get this out of the house if we do move without it being somehow folded up! You may want to consider two singles on a bed if access is restrictive for delivery.
The deep dips in the top shape of the geltex cover which are made by the sewn buttons are initially a little strange as it distorts the top much more than expected, however because you sink in to the top it does flatten out to some extent.
The biggest negative though was that almost immediately after purchasing I saw an advertisement come up showing the price had been reduced by a further significant amount, leaving me feeling a little disappointed that I had paid over the odds if only I'd waited another week or so, as a result I've since found Camel, Camel, Camel and will certainly be viewing trends from now on :(