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  4. Harrison Spinks Quilted Fusion 12000 Pocket Mattress
Harrison Spinks Quilted Fusion 12000 Pocket Mattress
Listen to the review on our podcast.

Harrison Spinks Quilted Fusion 12000 Pocket Mattress

FirmnessSoft Medium
ConstructionPocket sprung

In shortLighter side sleepers get a cosy Soft Medium feel and edge support from pocket springs. I like the build, though the price is high and I'd want to know how it wears. Read the review


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

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.

What our reviewers found

Pros

Impressive 5 year guarantee.

Hypoallergenic by design which will prove ideal for those that suffer from allergies.

Premium brand that sits in the upper quality segment.

Cons

Price point may still alienate customers regardless of the great quality and good value offered.

The Harrison Spinks Quilted Fusion 12000 is a cosy and comfortable mattress, providing pressure-relieving support exclusively from Mattress Online. Reviews are still coming in since this product is so new but that doesn't stop us from taking a quick peek under the covers and looking at the innards around what makes this particular mattress great.

First, a bit about mattress mechanics, this particular unit is single sided which means that the comfort layer is sat on the top of the mattress while the support structure sits at the base of the mattress. This setup works well often offering better initial value over double sided mattresses while giving fantastic quality and comfort. Onto that bottom layer now.

To start, the bottom layer is made up of pocket springs, our personal favourite, and features a core of 1000 Advanced Cortec Quad pocket springs, with HD and Posturfil mini springs layered above and below (12,000 springs in total), that aid and contour to your body offering an ideal nights sleep with full edge to edge support that will rival other premium products you may come across. This support layer is where you will often find the tension plays the biggest role and in this instance has been rated soft medium. This type of rating will be suitable for side sleepers and those of an average or lighter weight class.

Onto the comfort layer above and you are getting soft white sustainable fillings that are kind on the environment, and your body. Offering a impressively deep layer, the comfort derived here should delight and further your REM sleep.

Harrison Spinks mattresses are superbly crafted, using time-honoured methods and approaches. Every craftsman contributes his respect and experience to every mattress, which makes them particularly unique. Over 180 years of expertise has gone into every mattress. That's what makes a Harrison Spinks mattress distinctive.

As mentioned at the beginning, we won't have any long term reviews for a while, however we have worked with Harrison Spinks for a long time and know that the value and quality offered is unrivalled. We can confidently recommend both this manufacturer and the premier retailer for the Harrison Spinks Quilted Fusion 12000 Pocket Mattress.

How we reviewed the Harrison Spinks Quilted Fusion 12000 Pocket Mattress

10+ years in the mattress industry40-point spec checkBenchmarked against 364 pocket-sprung mattresses5 buyer questions read435 price checks since Apr 2022

Drawing on over 10 years in the mattress industry, our team judged the construction, materials and firmness of the Harrison Spinks Quilted Fusion 12000 Pocket Mattress point by point from its 40-point specification and Mattress Online's listing, and benchmarked it against 364 other pocket-sprung mattresses we track. We have checked its price 435 times since April 2022. How we review


Corrections

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

11 October 2026
We said this mattress had 12,000 HD micro springs. It has a core of 1000 pocket springs with mini springs above and below, 12,000 in total.

How does it feel?

Personalised feel depends on bodyweight. Adjust your weight below to get an indication of how the Harrison Spinks Quilted Fusion 12000 Pocket Mattress may feel.

SnoozeScore

Still not sure if the Harrison Spinks Quilted Fusion 12000 Pocket 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 £1,328 (King) at Mattress Online

Choose your size
£1,328Low end of our 90-day readings Read 12 Nov 2026 · excludes delivery
Shop King at Mattress Online

Our latest King reading against the last 90 days

Low £1,324 (27 Oct)High £1,505 (2 Nov)

King price, tracked since 27 Oct

In the last 90 days the King at Mattress Online has read between £1,324 and £1,505.

SizeLatest readingReadLowest readingOnTracking since
King£1,32812 Nov 2026£1,32427 Oct 202627 Oct 2026
Super King£1,82412 Nov 2026£1,82427 Oct 202627 Oct 2026

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

How it scores
of the Harrison Spinks Quilted Fusion 12000 Pocket 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 3.5/5
  • 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 4/5
  • 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 3.5/5
  • 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
  • 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 Harrison Spinks Quilted Fusion 12000 Pocket Mattress
Brand: Harrison Spinks
Retailer: Mattress Online
Delivery Time: Excellent
Delivery Charge: Excellent
Customer Sentiment: Average
Guarantee: Good
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

3.67 owner rating from 3 reviews

Richard
Verified by Mattress Online
3
Improvement Points: Very soft for the price paid. Movement of one partner still transmitted across the matress despite the very high number of springs.
Fiona
Verified by Mattress Online
3
Good Points: Soft and comfortable Improvement Points: The mattress slopes so I feel I'm falling out of bed!
Irina
Verified by Mattress Online
5
This review contains a rating only; no comment was left by the customer.

Questions and answers about the Harrison Spinks Quilted Fusion 12000 Pocket 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
Are there limitations to the use of this mattress due to its depth?

Answer: The depth of the mattress, being 28cm, could affect suitability for certain types of bedding, mattress toppers and bed frames. It's suggested to ensure compatibility before purchase.
Image of the post author
Common question
What is the significance of the mattress being hand side-stitched?

Answer: Hand side-stitching is a traditional technique that creates a sturdier, more durable border; this method improves longevity and provides edge-to-edge support for your mattress.
Image of the post author
Common question
Would the soft white fibres and knitted cover enhance comfort?

Answer: Yes, the soft synthetic fillings create a cosy sensation and the knitted cover enhances airflow and breathability, contributing to a cooler and more comfortable sleep.
Image of the post author
Common question
How would this mattress fare for a side sleeper with a low BMI?

Answer: This mattress is a good match for side sleepers and those with a lower BMI. It offers soft-medium tension support which is suitable for your needs.
Image of the post author
Common question
Is there a need to flip this mattress?

Answer: No, there's no need to flip this single-sided mattress. Just rotate it every few months for optimal use and care of your mattress.

Videos about this mattress

Hand picked video that relates to the specifications of The Harrison Spinks Quilted Fusion 12000 Pocket Mattress

What are Pocket Springs?
What are Pocket Springs?
By BedStar
What is Hypoallergenic?
What is Hypoallergenic?
By Karen Kelley Perkins
Mattress Online
Mattress Online
By Mattress Online
Harrison Spinks
Harrison Spinks
By Harrison Spinks

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.

  • Lighter sleepers guide

    Why it’s featured

    This guide lists soft to medium mattresses without a memory foam top, unless latex is there too, which a lighter body can settle into.

    Includes comment from a registered clinician
    Read the guide
  • Pregnancy guide

    Why it’s featured

    This guide lists soft-medium and medium pocket-sprung and hybrid mattresses, which suit side sleeping through pregnancy.

    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
  • Specification40 points from Mattress Online's listing
  • Buyer questions5 read
  • Price history435 checks since April 2022
  • BenchmarkCompared with 364 other pocket-sprung mattresses we track
  • Site-wideOur price tracker has logged 1,351,752 retailer prices since June 2019

Latest advice and guides → Your Questions Answered

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