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Hypnos Alcester Ortho Extra Mattress
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Hypnos Alcester Ortho Extra Mattress

FirmnessFirm
ConstructionPocket sprung
sleeping cat
33p per sleep based on average mattress lifespan

Searching for best deal
Reveal Offer Price and Go To Site *
100-night comfort trial at Mattress OnlineConditions
Remedy
An exchange, not a refund
When
After 30 nights' use
Condition
Buy a mattress protector from Mattress Online with the mattress
Old mattress removal
£35
Delivery
Free; to the room of your choice £20

Checked on Mattress Online's site, 10 October 2026. Full terms at Mattress Online

* We work with retailers to secure the best deals, outgoingOutgoing links are monetised

Who is it best for? powered by SnoozeScore

In our experience, the materials and construction that go into this product can make it suitable for the following people.

Back sleeping and stomach sleeper icon
For back and stomach sleepers
Additional support helps these positions
Reduced partner disturbance icon
Reduced partner disturbance
Pocket springs work independently to one another.

What our reviewers found

Pros

  • Its robust orthopaedic design offers superior back support and comfort for those seeking firm mattresses.
  • Suitable particularly for back sleepers, providing optimum spinal alignment and pressure relief.
  • Owners like the firm feel, and one wrote that "The firmness and sleep quality is amazing".
  • Not only practical but also stylish, this mattress adds a touch of elegance to the bedroom setting.

Cons

  • The firm tension makes it unsuitable for side sleepers who typically need a softer surface.
  • The mattress's orthopaedic qualities might not appeal to everyone, especially those without specific back or joint concerns.
  • The weight of the mattress makes rotating it a bit challenging despite the built-in handles.

There's nothing quite as critical to a good night's sleep as the mattress you choose to rest on. A mattress should be more than just a resting place; it needs to provide the optimal blend of comfort, support, and luxury. From the moment it arrives at your home to the first time you sink into it for a good night's sleep, every element of the mattress matters. Let us cue in the Hypnos Alcester Ortho Extra Mattress - a marvel of sleep technology that we've had the privilege to review. Designed with a unique blend of features, it promises a sleep experience that is so delightful, you'll wake up feeling refreshed and invigorated every morning.

How we assessed it

The Hypnos Alcester Ortho Extra Mattress is rated firm, which is how we'd expect it to feel. Its 1200 pocket springs have six turns each, which gives them a tighter tension. The cotton and Solotex™ fillings above them are tufted down, so you should lie on top of this mattress with very little sink. That points to back and front sleepers, and away from side sleepers, who need a shoulder to settle in. Cotton over springs, with 16 air vents in the border, should sleep cooler than a foam top. Owners rate how it is put together: one who "had a Hypnos before" calls this one "even better", and another describes it as "Very well made".

Design and features

The Hypnos Alcester Ortho Extra Mattress is a product of master craftsmanship, from its impressive 1200 ReActivePro™ 6-turn pocket springs to its Solotex™ layer engineered from recycled plastic. Knitted into a comfortable cocoon of firm support, these 6-turn springs offer a unique sturdiness that counters motion transfer, ultimately adapting to the nuances of your body, relieving aches, and delivering tailored support. The expertly chosen materials create an eco-friendly mattress that's not just good for you, but also the environment.

Sitting on top of this is a layer of wonderfully springy and breathable cotton, designed to keep you at the right temperature all night by wicking away moisture. The overall comfort is further enhanced by a sumptuous damask cover which, besides being soft to the touch, does not retain heat and delivers long-lasting performance.

As a sign of its inherent durability and the craftsmanship involved, this firm mattress is hand-tufted to secure the fillings in place and prevent sagging or shifting over time. The hand-stitched borders are a hallmark of quality, providing reinforced edge support and extending the sleeping space all the way to the edges without any roll-off sensation.

Mattress comfort

The firmness of the Hypnos Alcester Ortho Extra mattress makes it an ideal choice for those who appreciate a stronger level of support. Its firm, supportive nature could be a standout feature for back pain sufferers, aiding in pressure relief and promoting good posture. As an orthopaedic mattress, every inch is expertly crafted to cradle the most delicate parts of your body, making sure your sleep is as revitalising as it should be.

Suitability

This mattress is specifically designed to cater to back sleepers and those with certain orthopaedic requirements. The firm tension offered by the Hypnos Alcester Ortho Extra Mattress might also be suitable for some stomach sleepers. However, it's worth noting that this mattress might not be the best fit for side sleepers due to its high firmness level.

What customers thought

Owners describe a comfortable, supportive mattress, and the firmness is part of the appeal. One wrote that "it does that mix of comfort and back support really well" and recommended it "if you need a quality mattress that's a bit firmer". Another bought it for a heavier sleeper and wanted "a quality, durable mattress". The double-sided build gets a mention too: one owner likes that it "can be rotated and turned over" for even wear. One has "slept very well on it even in the hot weather".

The verdict

The build of the Hypnos Alcester Ortho Extra Mattress delights us at every step, and owners say they sleep well on it. It effortlessly balances firm orthopaedic support with high comfort levels, making it an ideal mattress for back sleepers or those in need of extra support. Its impressive quality and the value for money it offers are clear indicators of its unbeatable advantages. Add to this the 10-year guarantee and the royal approval from His Majesty King Charles III, and you have a mattress that is undeniably hard to resist. Our recommendation? Don't fight the temptation.

How we reviewed the Hypnos Alcester Ortho Extra Mattress

10+ years in the mattress industry25-point spec checkBenchmarked against 346 pocket-sprung mattresses5 buyer questions read87 price checks since Feb 2024

Drawing on over 10 years in the mattress industry, our team judged the construction, materials and firmness of the Hypnos Alcester Ortho Extra Mattress point by point from its 25-point specification and Mattress Online's listing, and benchmarked it against 346 other pocket-sprung mattresses we track. We have checked its price 87 times since February 2024. How we review


Corrections

When we get something wrong, we fix it and say so here. All corrections

11 October 2026
We said Hypnos had royal approval from Her Majesty Queen Elizabeth II. It is from His Majesty King Charles III.

How does it feel?

Personalised feel depends on bodyweight. Adjust your weight below to get an indication of how the Hypnos Alcester Ortho Extra Mattress may feel.

SnoozeScore

Still not sure if the Hypnos Alcester Ortho Extra Mattress is suitable for you?

Answer 6 quick questions to see how well this mattress fits you, and which mattresses fit you better.

Price history

From £823 (Single) at Mattress Online

Choose your size
£1,071No change Read 7 Nov 2026 · excludes delivery
Shop King at Mattress Online

King price, tracked since 27 Oct

We have read the King at Mattress Online 12 times since 27 Oct 2026, and it has been £1,071 each time.

SizeLatest readingReadLowest readingOnTracking since
Single£8237 Nov 2026£82327 Oct 202627 Oct 2026
Small Double£9177 Nov 2026£91727 Oct 202627 Oct 2026
Double£9177 Nov 2026£91727 Oct 202627 Oct 2026
King£1,0717 Nov 2026£1,07127 Oct 202627 Oct 2026
Super King£1,3767 Nov 2026£1,37627 Oct 202627 Oct 2026
Super King Zip and Link£2,4857 Nov 2026£2,48527 Oct 202627 Oct 2026
Emperor£1,9997 Nov 2026£1,99927 Oct 202627 Oct 2026
European Double£1,2957 Nov 2026£1,29527 Oct 202627 Oct 2026
European King£1,4497 Nov 2026£1,44927 Oct 202627 Oct 2026

Prices exclude delivery. How we record prices: our mattress price report.

How it scores
of the Hypnos Alcester Ortho Extra Mattress
Scored from the build: how this construction usually performs, compared with mattresses of a similar type and price.
Scored from the build: how this construction usually performs, compared with mattresses of a similar type and price.

Suitability

  • Back Sleepers 4.5/5
  • The amount of support offered from a mattress will vary depending on the firmness of the tension and the type of support layer used. Based on a person of average build.
  • Side Sleepers 3/5
  • If you sleep on your side you typically need a supportive tension that is not too firm, nor too soft. This is because your hips and shoulders need adequate sinkage.
  • Stomach Sleepers 5/5
  • Stomach sleepers need a reasonable amount of tension in the base support layer to adequately offer body contouring and help prevent aches and pains. Results will vary based on your build.

Performance

  • Breathability 4/5
  • Mattresses that feature breathable materials help promote airflow and keep you cool making for a more hygienic night's sleep.
  • Turning on mattress 5/5
  • Certain materials like memory foam can make it difficult to move about on the mattress while you toss and turn. Same too for pillow tops which can create a cloud like sensation which can make manoeuvrability challenging.
  • Stability 4.5/5
  • Depending on the type of support layer in place can have an impact on stability, edge to edge support and roll together prevention. Pocket springs of a firmer tension will have better stability than open coil soft tension, for example.

Ease of Use

  • Turning handles 5/5
  • Mattresses typically need to be rotated frequently and having turning handles can be massively beneficial, particularly in larger sizes which can become fairly heavy.

Odour

  • Initial Odour 4.5/5
  • Materials in mattresses, particularly memory foam and rolled bed-in-a-box mattresses can have an initial odour, this is typically short term and reduces considerably within 24 hours.
  • Long Standing Odour 5/5
  • Certain materials inside different mattresses can produce a small odour. Typically this is short term rather than long standing but there are minor exceptions.

Brand Rating

  • Overall Brand Rating 4.5/5
  • This is based on community driven customer reviews tied to product reviews and grouped together at a brand level to produce a score.
*Assumes average weight. Suitability is dependent on body type, so check your SnoozeScore above for a more tailored guide.
Radar analysis
of the Hypnos Alcester Ortho Extra Mattress
Brand: Hypnos
Retailer: Mattress Online
Delivery Time: Excellent
Delivery Charge: Excellent
Customer Sentiment: Good
Guarantee: Excellent
Radar Analysis looks at the product, brand and retailer against base norms established within the industry and determines where the product sits by way of established performance metrics.

Reviews

4.88 owner rating from 8 reviews

Rogers
Verified by Mattress Online
4
That's what I think it rates!
Peter
Verified by Mattress Online
5
Bought for my son who is rather heavy! So we needed a quality, durable mattress. Looks like we've got one. Impressed with mattress-online - very competitive with no diminished service as a quid pro quo.
Amy
Verified by Mattress Online
5
Sleeping great, it does that mix of comfort and back support really well, had a Hypnos before, and this is new one even better. Highly recommended if you need a quality mattress that's a bit firmer.
Ross
Verified by Mattress Online
5
The firmness and sleep quality is amazing. We also like the fact that the mattress can be rotated and turned over which will give even wear over its lifetime.
Ellie
Verified by Mattress Online
5
A very comfy, supportive mattress. Have slept very well on it even in the hot weather. Love hypnos.
Ann
Verified by Mattress Online
5
Very well made comfortable support very good. Great night's sleep. Highly recommend.
Andrew
Verified by Mattress Online
5
Our new hypnos mattress is very comfortable and I would recommend it to anyone
Susan
Verified by Mattress Online
5
Very comfortable.

Questions and answers about the Hypnos Alcester Ortho Extra Mattress

Common questions answered by our team first, then questions shoppers asked the retailer, with the retailer’s own answers.

Image of the post author
Common question
Can you tell me more about the benefits of air vents in a mattress?

Answer: Air vents are there to enhance air circulation through the mattresses, giving you a fresher feel. This feature also helps in preventing moisture build-up, which can assist to create a more hygienic sleeping environment.
Image of the post author
Common question
What's the advantage of having individual pocket springs?

Answer: Pocket springs provide personalised support to each part of your body because they adapt expertly to movement. They are encased in cloth pockets which further enhance the comfort and support.
Image of the post author
Common question
Does the cotton filling material benefit the sleep experience in any way?

Answer: The presence of natural cotton fibres contributes to a perfectly fresh sleeping environment. They regulate your body temperature and wick away moisture for a comfortable night's sleep.
Image of the post author
Common question
Would the firmness of this mattress potentially create discomfort for side and stomach sleepers?

Answer: Yes, this firm tension could potentially cause discomfort for side sleepers. Some stomach sleepers, however, might benefit from it, but it's primarily designed for back sleepers.
Image of the post author
Common question
How does a damask cover feel to touch? And does it have any additional benefits?

Answer: A damask cover feels soft to touch, is finely woven and durable. It doesn't retain heat, ensuring a comfortable temperature for you through the night.

Videos about this mattress

Hand picked video that relates to the specifications of The Hypnos Alcester Ortho Extra Mattress

Firm vs Soft Mattress
Firm vs Soft Mattress
By BedStar
What are Pocket Springs?
What are Pocket Springs?
By BedStar
Mattress Online
Mattress Online
By Mattress Online

Guides this mattress is featured in

This mattress is listed in 2 of our guides because its build meets what each guide looks for. Each card says what that is.

  • Front sleepers guide

    Why it’s featured

    This guide lists medium-firm and firmer mattresses on pocket springs or latex, with no memory foam or pillow top to sink into.

    Includes comment from a registered clinician
    Read the guide
  • Larger sleepers guide

    Why it’s featured

    This guide lists firm and extra-firm pocket-sprung and hybrid mattresses, which hold a heavier body without a dip forming.

    Read the guide

Clinicians comment on the condition in each guide, not on individual mattresses.

Sources for this review

  • Our assessmentConstruction, materials and firmness judged by our team, from over 10 years in the mattress industry
  • Specification25 points from Mattress Online's listing
  • Buyer questions5 read
  • Price history87 checks since February 2024
  • BenchmarkCompared with 346 other pocket-sprung mattresses we track
  • Site-wideOur price tracker has logged 1,339,206 retailer prices since June 2019

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