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Silentnight Miracoil Ortho Mattress

4.7/5
Hand tufting keeps the spring system at full tension, while EcoComfort fibres proven to reduce mites back up the properly firm feel.
iconFirmer
iconEco Comfort™
iconMiracoil™
icon23cm depth
  • Perfect for anyone who is looking for a high-quality firm mattress
  • This mattress is hand-tufted to keep the miracoil system as effective as ever
  • Filled with EcoComfort fibres, which are scientifically proven to reduce mites and allergens
  • Silentnight Ortho Sleep
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£239
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The Verdict

What 456 sleepers really think

Rated 4.7/5 from 456 verified reviews
The Silentnight Miracoil Ortho mattress is widely praised for its comfort, firmness, and supportive qualities, making it ideal for those with back issues or who prefer a firmer mattress. Many users highlighted the excellent value for money and noted improvements in sleep quality and reduced back or shoulder pain. While most found it extremely comfortable, a few mentioned it might be too firm initially or noted slight surface unevenness.

AI-generated from the text of customer reviews

Why This Mattress

Why buy the Silentnight Miracoil Ortho Mattress?

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

Best For
Back + Stomach
Back or front, never sure?
Steady, even support that keeps your spine level whether you settle on your back or your front.
Helps with
Breathable
Wake up clammy?
Airy construction lets heat and moisture escape, so the sleep surface stays fresh through the night.
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
All Season
Hot in July, cold in January?
A balanced build that doesn't run hot in summer or cold in winter, so it works all year round.
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?

Firmer

Firmer is the level of support to the body, suitable for average to heavily 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

4.7
Product Rated 4.7 Stars
456 reviews
Average Customer Ratings
Comfort4.6
Durability4.6
Quality4.6
Value for money4.6
Rating Snapshot
5 stars
354
4 stars
75
3 stars
12
2 stars
5
1 stars
10
Customer Photos
Customer Attachment
Excellent354
Great75
Average12
Poor5
Bad10
Jonathan Mussen
Customer Rated This 5 Stars 5/5
25 Aug 2025
I checked out many mattresses and dozens of reviews before buying this product. I was worried that it would not be firm enough ( I have been disappointed before ) and that I may need to spend more money to get something I liked. I decided NOT to buy the mattress protector which would have made me eligible for the 60 day trial - a small risk as there were so many good reviews. Mattress was delivered quickly. My first thought was that it was much too light to be a firm mattress ( esp in comparison to my old one from Ikea ) - I really thought “oh dear - I’ve made a mistake”. BUT… I made the bed up, lay down and was very happy with it. Nicely v firm - maybe a bit bouncy? But the bounciness was just in comparison to my saggy, soft old one. First night was good - a big change from the old one. After that it’s been ideal - completely used to it in 2-3 nights. The edges are also strong - not flattening too much. For £258 delivered I reckon it’s very good value for money. As for its durability, that’s something I’ll find out. I just hope it gives me at least 5 yrs of being like it is now. If there’re buyers out there who want to sink in to the mattress a little when lying in their sides - beware. Ditto for an older person with not much flesh on them. But… for me it’s perfect. Cheers Mattressman ??
Value5
Quality5
Comfort5
Chris Wilson
Customer Rated This 5 Stars 5/5
13 Aug 2024
If you like a firm mattress this will do! 1 week since the mattress was delivered and my lower back aches have eased. It might not be for everyone, but if like me, a firm but comfortable mattress is preferred at a reasonable price, this will do. Being quite tall, the king-size was ordered and fits my metal bed frame perfectly. Can't complain. Delivery was great. Took out the service to remove my old mattress so the process was seamless. Out with old in with the new. Cheers.
Comfort5
Quality5
Value5
Wendy Webb
Customer Rated This 5 Stars 5/5
29 Jul 2023
We wanted a firm support mattress and this is really good. We have put a mattress topper on too so it is a bit softer but maintains the back support. Can’t rate durability as we’ve only had it a week but Silentnight is a long-standing manufacturer so no reason to think it won’t last the distance. The only thing I would have liked to see was handles on the sides to make regular rotating easier. Delivery chaps great.
Comfort4
Durability4
Quality5
Value5
Michelle Gower
Customer Rated This 5 Stars 5/5
02 Dec 2025
This is actually the second time I've purchased this mattress. I bought my first one about eight years ago, and it has lasted well. I struggle with lower back issues and find this mattress to be perfect for me. I also add a mattress topper to get the best of both worlds: the firmness I need and a little softness for added comfort.
Quality5
Durability5
Comfort5
Value5
Sharon Huth
Customer Rated This 5 Stars 5/5
03 Nov 2023
i was very happy with this product. it arrived on time and was a fast delivery . the delivery driver was very helpful craying it up to my bedroom for me. very polite and friendly. i found the product very comfy and comfortable to sleep on. in general very pleased with the mattress and the service and delivery time slot given .
Comfort5
Durability5
Quality5
Value5
Juraj Mavracic
Customer Rated This 5 Stars 5/5
13 Mar 2025
This is an excellent mattress! I was worried a little of it being too firm, but it is not. It's ideal. Very firm but still a mattress, it doesn't feel like you are sleeping on the floor. It looks very well made, feels like old school mattress quality and very durable. Best value for money mattress I have ever bought.
Durability5
Quality5
Comfort5
Value5
Viewing 1 to 6 of 456
Our Promise

The Miracoil Ortho 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

Is the Miracoil Ortho mattress suitable for allergy sufferers?
Yes, the Miracoil Ortho mattress is recommended for allergy sufferers due to its anti-allergy properties. It features EcoComfort fibres that are scientifically proven to reduce mites and allergens, making it a great choice for those with sensitivities.
What type of cover does the Miracoil Ortho mattress have?
The mattress is covered in a damask fabric, which is soft and gentle to the touch. This woven cloth allows the mattress to breathe, enhancing comfort during sleep.
How is the Miracoil Ortho mattress constructed?
The mattress is hand-tufted, which keeps the fillings securely in place and adds tension to the springs. It features a Miracoil spring system that prevents roll-together, offering a firm sleeping surface.
Is the Miracoil Ortho mattress one-sided?
Yes, the Miracoil Ortho mattress is one-sided, meaning there's no need to flip it over. However, it is recommended to rotate the mattress regularly to maintain its comfort and support.
What materials are used in the fillings of the Miracoil Ortho mattress?
The mattress is filled with fibre fillings made from 100% hypoallergenic polyester, which is durable and ideal for those with hay fever. This ensures a comfortable sleeping surface while minimising allergens.
What kind of support does the Miracoil spring system provide?
The Miracoil spring system is designed to offer a firm tension, helping to provide support across the entire sleeping surface. This construction prevents roll-together, giving you a more stable sleeping experience.
How does the hand-tufting contribute to the performance of the Miracoil Ortho mattress?
The hand-tufting on the Miracoil Ortho mattress plays a crucial role in maintaining the effectiveness of the miracoil spring system by keeping all materials securely in place. This process ensures that the interwoven springs do not shift, which helps to retain the mattress's firm feel and overall support. Additionally, the hand-tufting contributes to the durability of the mattress, ensuring it retains its shape over time.
What are the benefits of the EcoComfort fibres used in the Miracoil Ortho mattress?
The EcoComfort fibres in the Miracoil Ortho mattress offer significant advantages by scientifically reducing mites and allergens, making it an excellent choice for allergy sufferers. Additionally, these fibres help to regulate temperature by reducing heat and wicking away excess moisture, ensuring a cooler and more comfortable sleeping environment throughout the night.
How does the firmness of the Miracoil Ortho mattress affect weight distribution?
The firmness of the Miracoil Ortho mattress is designed to provide optimal support, especially for individuals of larger stature. Its firmer feel helps to ensure that weight is evenly distributed across the mattress, which can alleviate pressure points and promote better spinal alignment during sleep. This makes it particularly beneficial for back sleepers and those who require extra support.
What is the fire safety rating of the Miracoil Ortho mattress?
The Miracoil Ortho mattress has a Domestic Flammability Rated Source 2 for Low Hazard, making it suitable for general domestic use while adhering to safety standards.

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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