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Harrison Spinks Coleridge King Size Mattress
The Harrison Spinks Coleridge is a firm, natural-fill pocket sprung mattress at the luxury end of the market.
- Plush pillow top over firm support
- Silk & wool regulate temperature
- Chemical-free sleeping surface
£3,999
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Harrison Spinks Coleridge Mattress
More available sizes
Mattress details
Mattress
Harrison Spinks Coleridge Mattress
Size
Firmness
Firm
Construction
Foam
Pocket Spring
Wool
Natural
Depth (cm)
35
Layers
7
Layer Details
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.
Key benefits
- 75cm each for two sharing: Each of you gets 75cm of width, so you can settle into your own space rather than negotiating the middle all night.
- Less disturbance on different schedules: The pocket springs move independently, and the extra width of a UK king means an early riser can slip out with less chance of waking their partner.
- 200cm of length for taller sleepers: The UK king is 10cm longer than the UK double, which is the difference between heels on the mattress and heels hanging off it for anyone nearing 6ft.
- Firm support across the full width: Seven layers of pocket springs keep the surface consistent edge to edge, so the extra space is all usable rather than a softer strip at the sides.
- Room for the dog too: If a dog on the bed is part of the routine, the step up from a UK double leaves space for it without one of you losing a shoulder's worth.
This size suits you if...
You share the bed every night and a UK double has started to feel cramped, especially if one of you gets up hours before the other and the fidgeting travels. It also suits couples where one partner is approaching 6ft, since the 200cm length is as much of the upgrade as the width. Your room should measure at least 2.7m x 2.9m to take it comfortably.
Consider another size if...
Your bedroom is smaller than the 2.7m x 2.9m we suggest for a UK king, particularly a new build master that shrinks once wardrobes go in. We'd recommend the UK double instead, which needs at least 2.6m x 2.8m.
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FAQ's
Is the Harrison Spinks Coleridge in a UK king big enough for two adults?
Yes, comfortably for most couples. At 150cm wide you get 75cm each for two people sharing, and because the Coleridge is firm you sleep on the surface rather than rolling towards the middle. If one of you sprawls, or a dog claims a share most nights, the UK super king adds another 30cm of width.
What room size do I need for the Coleridge in a UK king?
We suggest at least 2.7m x 2.9m. That allows walking space on both sides and room to open drawers or wardrobe doors without shuffling sideways. Measure with furniture in place, as newer rooms often look bigger empty than they are. If your room falls short, the UK double needs at least 2.6m x 2.8m.
Should I get the Coleridge in a UK king or a UK super king?
The UK king is 30cm narrower than the UK super king, and the two are the same length, so the choice is purely about width and room size. We suggest at least 3m x 2.9m for the UK super king. If you have that space and share with a restless partner, size up; otherwise the UK king suits most couples.
Is the UK king Coleridge long enough for someone over six foot?
At 200cm, it should be. The UK king is 10cm longer than the UK double, which matters more than width for a taller sleeper whose feet reach the end of a standard 190cm mattress. Anyone well over 6ft 3in may still want to lie on one in a showroom before committing at this price.
Will a king size Coleridge stop me feeling my partner move?
It helps on two fronts. The 17,268 pocket springs move independently, so movement on one side transfers less across the mattress, and the 75cm each of width means you're rarely lying close enough to feel it anyway. Couples on different schedules, where one leaves for work hours earlier, tend to benefit most from the combination.