Harrison Spinks Jade 10000 Pocket Mattress (Soft to Medium Feel)
The Harrison Spinks Jade 10000 is a pocket spring mattress with a soft to medium feel, handcrafted in the UK and finished with British wool comfort layers.
- Gentle, gradual contouring feel
- Less clammy if you run warm
- Supportive across your whole body
£1,049
Get the lowest price we've found
Inside the Harrison Spinks Jade 10000 sit 9,700 springs in total: 700 Cortec Quad support springs, 1,300 Posturfil mini springs and 8,000 mini pocket springs, which means the surface can mould closely to your shape rather than pressing back in one flat plane. It's 29cm deep and sits at the premium end. This listing is for the soft to medium version; the mattress also comes in medium and firm options, so check you have the right one before ordering.
Mattress specifications
Firmness
Medium Soft
Type
Pocket Spring
Depth (cm)
29
Number of Layers
4
Trial Period (nights)
100
Warranty (years)
5
Price Range
£1,049 to £1,949
Best Sleeping Position(s)
Side Sleeping
Certifications
BS 7177
Assessed from the specification published by Mattress Online, captured September 2026, and from regular price comparison across our UK retail partners.
Why should you choose this mattress?
Layered natural fillings are the draw here. Wool insulates and breathes, and a blend of cotton, hemp and flax fibres wicks moisture away, which means the mattress should feel less clammy than synthetic-topped alternatives if you tend to run warm at night. The sheer spring count, 9,700 across three types, gives a gradual, contouring feel rather than an abrupt push-back. It carries National Bed Federation approval and conforms to BS7177: 2008 fire safety standards. Yes, the price is high, but the construction and UK handcrafting go some way to justifying it. MattressOnline lists a 100-night trial and free front door delivery within 7 weeks, though those are that retailer's own terms, not the brand's.
Key features & layer details
Comfort fillings
British wool comfort layers sit at the top, which means natural insulation in winter and breathability in summer. Wool also handles moisture well, so the sleep surface should stay fresher for longer.
Mini Pocket Springs
1,300 Posturfil mini springs flex as you move, while 8,000 mini pocket springs mould around your body shape. In practice this feels like close, even contouring rather than a single firm push.
Moisture wicking layer
A blend of soft cotton, hemp and flax fibres forms a breathable barrier against moisture build-up. If you're a hot or sweaty sleeper, this layer does quiet but useful work.
Support system
700 Cortec Quad springs form the base, grouped into fours and encased within a fabric pocket. This gives adaptable, responsive support across your whole body rather than just under the heaviest points.
Layer details from mattressonline.co.uk product page, September 2026.
Best suited for?
Side sleepers
The 8,000 mini pocket springs mould closely around your body shape, which means shoulders and hips can sink in with close, even contouring.
Warm sleepers
Wool and a cotton, hemp and flax moisture wicking layer breathe and draw moisture away, so the surface should feel less clammy through the night.
Combination sleepers
Posturfil mini springs flex as you move, which means the surface adapts as you change position rather than pushing back in one flat plane.
Allergy sufferers
Natural wool, cotton, hemp and flax fillings and a moisture wicking layer help keep the sleep surface fresher for longer.
Lighter sleepers
The soft to medium feel and 9,700 springs across three types give a gradual, contouring response that lighter bodies can sink into comfortably.
This is the soft to medium version, so it may not suit heavier sleepers or dedicated back and front sleepers who need a firmer surface; the same mattress comes in medium and firm options instead. It's also a significant spend, so budget-focused buyers should look elsewhere.
Save on an earlier or ex-display model
Some retailers still sell the earlier version of this mattress, or ex-display and returned stock at a lower price. These are the sizes where it costs less than the current model's best price.
Harrison Spinks Jade 10000 Pocket Mattress (Soft to Medium Feel)
Select a comparison article below or choose to compare this mattress side by side with up to 2 other mattresses.
Did you know? On Mattress Unboxed we have over 1,000 different mattresses to suit all types of sleepers. View all mattresses.
FAQ's
How many springs are in the Harrison Spinks Jade 10000?
9,700 in total: 700 Cortec Quad support springs, 1,300 Posturfil mini springs and 8,000 mini pocket springs. The mini springs sit in the comfort layers to contour to your shape, while the Quad springs underneath provide full body support.
Is the Harrison Spinks Jade 10000 soft or firm?
This version has a soft to medium feel. The mattress is also available in medium and firm options, so lightweight sleepers and side sleepers who like a gentler surface are the natural fit for this particular listing.
What is the Harrison Spinks Jade 10000 made of?
Natural materials feature heavily: British wool comfort layers, a moisture-wicking blend of cotton, hemp and flax fibres, plus pocket springs and mini pocket springs. It's handcrafted in the UK and conforms to BS7177: 2008 fire safety standards.
Does the Harrison Spinks Jade 10000 come with a trial or guarantee?
MattressOnline lists a 100-night trial, though that's the retailer's own offer rather than a brand-wide term, so check terms wherever you buy. The listing states a 5 year guarantee with an additional 5 year warranty thereafter.
How deep is the Harrison Spinks Jade 10000 mattress?
It's 29cm deep, a fairly generous depth thanks to the layered fillings and triple spring system, so you may need deeper fitted sheets. It comes in UK Single, Small Double, Double, King and Super King sizes.
Couldn't find an answer to your question? Send us a message