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Silentnight Memory 3 Sleep Mattress

4.6/5
30mm of memory foam on a reflex base gives a softer feel that side sleepers tend to love.
iconSofter
icon30mm Memory Foam
iconReflex Foam
icon18cm depth
  • Perfect for side sleepers
  • 30mm Memory Foam
  • Vacuum-packed for extra convenience
  • Silentnight Just Relax 3 Zone Foam Mattress
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Seen it cheaper somewhere else? We'll match it — that's our Price Promise.

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£439
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Memory 3 Sleep Mattress
Lacks depth and firmness
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Description
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1 Year Guarantee
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The Verdict

What 215 sleepers really think

Rated 4.6/5 from 215 verified reviews
The Silentnight Memory 3 Sleep mattress is praised for its comfort and support, especially benefiting those with back pain. Reviewers appreciate its value for money and how it lives up to expectations without feeling traditional coils. It is described as comfortable, especially on the firmer side, and many found it significantly improved their sleep quality. Some noted an initial smell, which typically fades after airing for a few days.

AI-generated from the text of customer reviews

Why This Mattress

Why buy the Silentnight Memory 3 Sleep Mattress?

Every mattress is different. Scan for the ones that sound like you — if two or more fit, this is your mattress.

Best For
Side Sleepers
Curl up on your side?
Enough give at the shoulders and hips to keep side sleepers comfortable and aligned.
Helps with
Allergies
Wake up itchy or sneezy?
Hypoallergenic fillings and covers help keep dust mites and allergens at bay - ideal for allergy-prone sleepers.
Helps with
Pressure Relief
Achy hips or shoulders?
Cushioning comfort layers spread your weight evenly, easing pressure around hips and shoulders.
Thermal Control
Warming
Cold sleeper?
Insulating layers that hold on to warmth, just the thing for cold sleepers and chilly bedrooms.
Helps with
Anti Bacterial
Freshness a priority?
A treated finish that stops bacteria building up, keeping things fresher and more hygienic for longer.
Helps with
Anti Microbial
Musty smells worry you?
Resists the microbes that cause mould and odours, helping the sleep surface stay clean and fresh.
Suitability
Adults
Buying for a grown-up bed?
Built for full-grown sleepers, with the depth and support to take adult weight night after night.
How It Feels

How firm is it?

Softer

Softer is the level of support to the body, suitable for light to average weighted people. This is not a comfort rating.

About the Brand
Est. 1946 4.66 brand rating

Silentnight is the UK's most trusted sleep brand, renowned for quality craftsmanship and tailored support. With a range of mattresses featuring Miracoil and Mirapocket systems, they ensure optimal spinal alignment and comfort for every sleeping position, making a good night's sleep accessible to everyone.

View all Silentnight
Real Sleepers

What our customers say

4.6
Product Rated 4.6 Stars
215 reviews
Average Customer Ratings
Comfort4.5
Durability4.4
Quality4.5
Value for money4.4
Rating Snapshot
5 stars
167
4 stars
31
3 stars
6
2 stars
3
1 stars
8
Customer Photos
Customer Attachment
Excellent167
Great31
Average6
Poor3
Bad8
Rachel Reen
Customer Rated This 5 Stars 5/5
15 Sep 2024
This mattress is absolutely perfect. My arthritis pain and back pain has eased tremendously through the night .At first it feels too hard and I couldn't imagine sleeping to great on it when I first lay down but it soon softens all around my body like it's moulded then when I turn over it does the same and I have never slept better. I would highly recommend. It is pretty smelly when first opened but I let mine air out in the spare room for a few days then it was fine no odour at all. I am still amazed at how this mattress can make me sleep so soundly
Value5
Durability5
Quality5
Comfort5
Philip Jordan
Customer Rated This 5 Stars 5/5
23 Apr 2024
I like a firm mattress, and this lives up to my expectations. My old foam mattress was more than 10 years old, and wasn't giving the support it used to. This is well finished, with a removable cover, and is very comfortable to sleep on. My only criticism is of the courier service: although their agent was pleasant and polite, they only provide a delivery window of between 8am and 6pm, so one could be waiting in all day. Fortunately, my order arrived at eleven o'clock, so I was able to go out later.
Comfort5
Durability5
Quality5
Value5
Lauren Rennie-braid
Customer Rated This 5 Stars 5/5
28 Jul 2023
After having a bad experience with buying a mattress from Bed World (on-going still!) I was dubious about buying another mattress online. This mattress arrived with a rip in it due to the pallet sticking into it in transit, so haven't had much luck, but MattresMan sent another one out and it is great! Just how described online and the video was helpful. Finally had some relief from pain laying in bed with this comfortable and cradling mattress. Would buy from Mattress Man again!
Comfort5
Quality5
Value5
Amina Idrees
Customer Rated This 5 Stars 5/5
21 Sep 2024
This mattress is beyond anything I have ever slept on! The comfort and support is something else. Fits my body perfectly, after sleeping on the floor for a few weeks due to a house move, I instantly felt the comfortability! From the purchase to delivery to how having the mattress, everything was smooth, would highly recommend the mattress for anyone who wants comfort and quality but at a reasonable price!
Comfort5
Quality5
Value5
William Radmore
Customer Rated This 5 Stars 5/5
04 Jan 2025
Bought this mattress as its one of the few continental sized ones suitable for a Murphy bed we just installed in a spare room. Fits fine, is very comfortable given its depth and our guests slept well. Unrolled and went flat quickly and smell dissipated after a few hours. Was delivered promptly with no fuss. Cant comment on durability as its only a few weeks old but its seems well made.
Comfort4
Quality5
Value5
Helen Tilsley
Customer Rated This 5 Stars 5/5
29 Nov 2023
very comfortable and also supportive. I am a 7 stone side sleeper and it is ideal. May be too soft for some people. Has a quality feel to it and is good value. Arrived vacuum packed in a cylindrical roll diameter about 18 inches, weighs 18kg so easy to move if you have a tight space. Pleased with it. Cannot yet say how long it will last.
Comfort5
Quality5
Value5
Viewing 1 to 6 of 215
Our Promise

The Memory 3 Sleep Mattress has

A 60-night sleep trial Sleep on it at home — love it, or exchange it between nights 30 and 60.
A 1 year guarantee See exactly what's covered, and for how long.
Price Match Promise Seen it cheaper somewhere else? We'll match it.
Good To Know

Frequently asked questions

Can people with allergies use this mattress comfortably?
Yes, this mattress is suitable for people with allergies. It has specific fillings and fabric that help to minimise allergens, making it a comfortable choice.
What is the thickness of the memory foam in this mattress?
The mattress features 30mm of memory foam, providing a comfortable and supportive surface for sleep.
How does the knitted cover contribute to the mattress's performance?
The knitted cover is designed to stretch with the mattress, offering great elasticity and breathability, which enhances overall comfort.
Can side sleepers expect good support from this mattress?
Yes, this mattress is designed to provide excellent support for side sleepers. It helps keep your spine aligned and offers pressure relief where you need it most.
Is it necessary to turn this mattress regularly?
This mattress is one-sided, so there's no need to turn it, but rotation is recommended to maintain even wear.
What is the construction of the foam layers in this mattress?
The mattress includes both memory foam for body moulding and pressure relief, as well as reflex foam, which is designed for longevity and cooler sleep.
How is the mattress packaged for delivery?
The mattress is vacuum-packed for convenience, making it easier to handle before it expands to its full size.
How long does it take for the mattress to fully expand after unpacking?
After you unpack the mattress, it's best to let it expand for about 4 to 24 hours. This allows it to reach its intended shape.
What type of finish does the mattress have?
The mattress features a micro quilted finish, which is created by stitching the fabric and fillings together to add a patterned comfort layer.
What flammability rating does the mattress have?
This mattress has a Domestic Flammability Rated Source 2, indicating it is suitable for low hazard, general domestic use.

60-night sleep trial: exchanges only, not refunds. Activated by purchasing a mattress protector at the point of order. Request your exchange between nights 30 and 60 of the trial; a £50 exchange fee applies. Full terms.

Recommendation rate: the percentage of verified Trustpilot reviews for this product with a rating of 4 stars or more, rounded down.

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