Firmness
Type
Pocket Spring
Depth (cm)
35
Number of Layers
7
Trial Period (nights)
100
Warranty (years)
7
Price Range
£2,999 to £5,999
Best Sleeping Position(s)
Certifications
Assessed from the specification published by Feather & Black, captured September 2026, and from regular price comparison across our UK retail partners.
Choose the Coleridge if you want firm support with a softer surface feel. The pillow top with micro springs gives you a gentle initial sink, while the seven layers of pocket springs underneath keep your spine aligned, which means you get cushioning without the mattress feeling soft overall. Hot sleepers should do well here: silk and wool absorb moisture and regulate temperature naturally. The British wool is traceable from farm to factory, and the sleeping surface is chemical-free, a genuine plus if you're sensitive to treated fabrics. Yes, it's expensive, but you're paying for 17,268 springs and fillings like cashmere and mohair rather than marketing. Feather & Black lists a 100-night comfort promise and a 7-year guarantee.
Key Features & what's inside
- Pillow top. A cloud-like pillow top with built-in micro springs, which means a plush surface feel that keeps its shape rather than flattening the way a fibre-only topper can.
- Natural fillings. Generous layers of 100% natural silk, cashmere, mohair, cotton, hemp, flax and British wool. Natural fibres breathe better than foam, so you're less likely to overheat.
- Silk layer. Silk is the strongest natural fibre and is prized for moisture absorption and temperature regulation. In practice, that means a drier, more even sleeping temperature through the night.
- Cashmere layer. Soft cashmere, taken as a byproduct from the fashion industry, known for its softness and insulation. It adds warmth in winter without trapping heat in summer.
- British wool layer. Harrison Spinks has partnered with British Wool, so the wool is fully traceable from farm to factory. Wool also wicks moisture, helping regulate temperature.
- Pocket springs. 17,268 responsive springs across seven layers of high-density micro, Posturfil and Cortec™ pocket springs. Each spring moves independently, which means less partner disturbance and support that follows your body's contours.
- Base layer. A chemical-free surface made from a wool and viscose blend. A reassuring detail if you'd rather avoid chemically treated materials next to your skin.
Layer details from featherandblack.com product page, September 2026.
Who's it NOT for?
This is a firm mattress, so lightweight side sleepers may find it doesn't let their shoulders and hips sink in enough, even with the pillow top. And at £2,999 upwards, it's simply out of reach for many budgets. If you prefer the slow-sink hug of memory foam, this responsive sprung feel won't suit you either.
Harrison Spinks Coleridge Mattress
View all mattresses
How firm is the Harrison Spinks Coleridge mattress?
It's listed as firm. The pillow top softens the initial feel slightly, but the underlying support is firm, so it suits back and front sleepers, and heavier side sleepers, better than lighter people who sleep on their side.
How many springs does the Harrison Spinks Coleridge have?
The specification lists 17,268 pocket springs, arranged in seven layers combining high-density micro, Posturfil and Cortec™ springs. That layered design means the mattress responds progressively: gentle at the surface, firmer and more supportive as you settle in.
Does the Harrison Spinks Coleridge come with a trial and guarantee?
Feather & Black, the retailer listing this mattress, offers a 100-night comfort promise and a 7-year guarantee. These are the retailer's own terms rather than a stated manufacturer offer, so check the terms wherever you buy.
What sizes does the Harrison Spinks Coleridge come in?
Six sizes: UK Single, Small Double, Double, King, Super King and Emperor. Prices range from £2,999 to £5,999 depending on the size you choose. The mattress is 35cm deep, so check your fitted sheets will accommodate it.
Is the Harrison Spinks Coleridge good for hot sleepers?
It should be. The fillings are entirely natural: silk, wool, cashmere, mohair, cotton, hemp and flax all breathe and wick moisture far better than synthetic foams, and the silk layer is specifically noted for temperature regulation.
Couldn't find an answer to your question? Send us a message