Firmness
Type
Pocket Spring
Depth (cm)
30
Number of Layers
5
Trial Period (nights)
Warranty (years)
10
Price Range
£1,249 to £2,399
Best Sleeping Position(s)
Certifications
Assessed from the specification published by MattressNextDay, captured September 2026, and from regular price comparison across our UK retail partners.
The appeal here is natural craftsmanship at scale. Five separate layers of springs, including Cortec pocket springs and Micro HD springs, react quickly to movement and give targeted support, which means less of that stuck-in-one-spot feeling. The fillings are wool, mohair, flax, sustainably sourced cotton and Ecotex fibres, materials that breathe well, so hot sleepers should find it more temperature-stable than foam alternatives. The wool is traceable British wool, and the whole thing meets the BS7177: 2008 low hazard fire standard without chemical treatments in the cover. Yes, it costs more than most boxed mattresses, but the construction and materials justify the gap for buyers who want longevity. A Harrison Spinks 10-year guarantee is listed with it.
Key Features & what's inside
- Cover. An in-house woven, natural and chemical-free cover made from breathable Belgian damask fabric. That breathability helps heat escape rather than build up at the surface.
- Top comfort layer. Layers of white wool and mohair, responsibly sourced from the sheep and Angora goats at the Harrison Spinks Yorkshire farm. These fillings give a soft, cushioned feel while wicking moisture away as you sleep.
- Viscose wool layer. A blend of viscose wool derived from the wood pulp of eucalyptus, beech and pine trees. It cradles you in comfort while enhancing ventilation throughout the mattress.
- Spring core. Five separate layers of springs featuring Cortec Pocket Springs and Micro HD springs, designed to react quickly to movements and provide targeted support. You feel this as support that adjusts to your shape rather than a single flat surface.
- Bottom comfort layer. More white wool and mohair from the same Yorkshire farm, mirroring the top layer. This adds a base of natural cushioning beneath the springs.
Layer details from mattressnextday.co.uk product page, September 2026.
Who's it NOT for?
This is a soft mattress, so if you prefer a firm, unyielding surface, or you're a heavier sleeper who needs more push-back, it's unlikely to suit you. It's also a significant spend, and it arrives flat rather than boxed, which can make delivery to awkward rooms trickier.
Harrison Spinks Winchester 13750 Mattress
How firm is the Harrison Spinks Winchester 13750?
It's listed as soft. That means a gentle, cradling feel, which tends to suit side sleepers and lighter body weights. If you sleep on your front or prefer a firmer surface, this probably isn't the right pick.
How many springs does the Winchester 13750 have?
It contains 13,750 springs arranged in five separate layers, including Cortec Pocket Springs and Micro HD springs. The layered design is meant to react quickly to movement and give targeted support to different parts of your body.
Does the Harrison Spinks Winchester 13750 come rolled in a box?
No, it arrives flat rather than rolled and boxed, which is normal for natural-filled mattresses like this. It's worth measuring doorways and stairwells before ordering, as a flat 30cm-deep mattress is bulkier to move.
What is the Winchester 13750 made of?
The fillings include wool, mohair, Ecotex fibres, flax, sustainably sourced cotton and viscose wool, with a breathable Belgian damask cover. The wool and mohair come from Harrison Spinks' own Yorkshire farm, and the wool carries Authentic Traceable British Wool certification.
Does the Harrison Spinks Winchester 13750 have a guarantee?
The MattressNextDay listing states a Harrison Spinks 10-year guarantee. The free next day delivery shown on that page is the retailer's own offer, so check terms with whichever shop you buy from.
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