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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.
- Fits compact rooms: At 90cm wide it needs only 2.1m x 2.8m of floor space by our guidance, so it works in box rooms, loft conversions and narrow spare rooms.
- Full luxury spec, smallest footprint: You get the pillow top, silk, cashmere and British wool in the single, which means no compromise on feel for sleeping alone.
- Cool for one: Wool and silk regulate temperature naturally, useful in a small room that warms up quickly with the door closed.
- Guest room quality: A firm, supportive single suits a spare room that has to please every visitor, from teenagers to grandparents.
- Cheap, easy bedding: Standard single sheets and a 135 x 200cm duvet fit, and they're the most widely stocked bedding of any UK size.
This size suits you if...
You sleep alone and want a genuinely high-end mattress without giving floor space to a wider bed, perhaps in a loft room where the bed has to sit under the slope, or a spare room that doubles as an office. It also suits an older teen who needs firm support and will keep the mattress for years, which helps justify the spend on a growing sleeper.
Consider another size if...
You have the room and budget for more sprawling space, or you occasionally share the bed. The UK double, which is 45cm wider and the same length, would suit you better; allow at least 2.6m x 2.8m for it.
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Will the Coleridge UK single fit a bunk bed or mid sleeper?
Be careful here. The Coleridge is 35cm deep, which is much deeper than the mattresses most bunk, cabin and mid-sleeper frames are designed for. On a top bunk it could raise the sleeper above the safety rail. Check your frame's maximum mattress depth before buying; many raised frames specify something far shallower.
Is the Coleridge single a good choice for a child's room?
The firm support suits growing backs, and the chemical-free sleeping surface is reassuring next to a child's skin. The honest question is value: this is a luxury mattress, and younger children outgrow bedding setups. For an older child or teen who'll use it for many years, it makes more sense than for a toddler moving up from a cot.
What size room do I need for the Harrison Spinks Coleridge in a UK single?
We suggest at least 2.1m x 2.8m of floor space. That leaves room to walk alongside the bed and open a wardrobe, though a desk and storage will still need planning in a small child's room. Two singles for siblings sharing will need noticeably more width to keep a walkway between them.
Is a UK single big enough for an adult on the Coleridge?
For one average-sized adult, yes: 90 x 190cm is the standard UK one-person size, and the seven layers of pocket springs support you the same as in larger sizes. Taller adults should note the 190cm length; the UK king is 10cm longer if you regularly find your feet at the edge.
Which retailers sell the Coleridge in a single?
Stock moves around, so the most reliable answer is the live comparison table on this page, which updates as retailers change their prices and availability. Larger sizes of the Coleridge sometimes appear at different retailers to the UK single, so it's worth checking the specific size rather than the model page alone.