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Harrison Spinks Coleridge Mattress
Mattress
Harrison Spinks Coleridge Mattress
Size
Firmness
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.
- Real space for one: At 120cm wide, the UK small double is 30cm wider than the UK single, which means a solo sleeper can stretch out without moving to a bigger room.
- Fits compact double bedrooms: It's 15cm narrower than the UK double, so it can be the difference between a bed that fits a loft conversion or box room and one that dominates it.
- Luxury build in a smaller footprint: You get the same 17,268 springs across seven layers and the same pillow top as the larger sizes, just in a width suited to tighter rooms.
- Cool, natural sleeping surface: Silk, wool and cashmere fillings breathe and wick moisture, which matters in smaller rooms where air can feel stuffier on warm nights.
- Comfortable for occasional sharing: The pocket springs move independently, so when a partner or guest does share for a night, movement on one side is less likely to wake the other.
This size suits you if...
You sleep alone most nights and have outgrown a UK single but your room can't spare the floor space a UK double demands, or you're furnishing a guest room or holiday let where couples stay occasionally rather than nightly. It also suits a downsizer whose new bedroom simply won't take the bed the old one held, provided you like a firm feel with a softer pillow-top surface.
Consider another size if...
You share the bed every night, because 120cm is a squeeze for two adults long term. We'd recommend the UK double instead, which is 15cm wider and the same length; allow at least 2.6m x 2.8m for it.
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Is a small double Harrison Spinks Coleridge big enough for a couple?
For occasional nights, yes. The pocket springs limit partner disturbance, so sharing now and then is comfortable enough. For every night, 120cm across is tight for two adults, and the Coleridge's firm feel means neither of you can compensate by sinking towards the middle. Couples sleeping together nightly would be better served by the UK double or UK king.
What room size do I need for a small double Coleridge?
We suggest at least 2.4m x 2.8m. That leaves enough clearance to walk round the bed and open the door, which is often the deciding factor in box rooms and loft conversions. Measure the awkward spots first: sloping ceilings, radiators and built-in wardrobes eat more space than the floor plan suggests.
How big is the Coleridge in a UK small double?
It's 120 x 190cm, or 4ft x 6ft 3in. That's 30cm wider than the UK single and the same length, so a solo sleeper gains genuine spreading room without needing a longer bed frame. Bear in mind the Coleridge is 35cm deep, so the overall bed height will be noticeable in rooms with low or sloping ceilings.
Will standard bedding fit the small double Coleridge?
Yes, 4ft is a standard UK size, so small double fitted sheets are easy to find, and a standard double duvet works on top. Given the mattress is 35cm deep, look for deep-pocket fitted sheets specifically; a regular-depth sheet will struggle to grip the corners of a mattress this tall.
Should I get the Coleridge in a small double or a double?
It comes down to your room and who sleeps there. The UK small double is 15cm narrower than the UK double, and both are the same length, so the choice is purely about width. Sleeping solo in a compact room, take the UK small double. Sharing regularly, and with at least 2.6m x 2.8m of floor space, choose the UK double.