Flaxby Platinum Solstice Single Mattress
The Flaxby Platinum Solstice is a firm, all-natural pocket sprung mattress at the very top end of the market.
- Firm feel, eases hips & shoulders
- Hemp & flax help regulate heat
- Free from FR chemicals & glue
£3,999
Get the lowest price we've found
Save with the previous model
Some retailers still sell the earlier version of this mattress for less than the current model's best price.
Flaxby Platinum Solstice Mattress
More available sizes
Mattress details
Mattress
Flaxby Platinum Solstice Mattress
Size
Firmness
Firm
Construction
Pocket Spring
Wool
Natural
Depth (cm)
33
Layers
3
Layer Details
Top layers
Naturally soft layers of wool, cotton, mohair, silk, cashmere and alpaca sit at the surface. These fibres give a plush initial feel while wicking moisture away as you sleep.
Temperature-regulating layers
Beneath the comfort fibres are naturally temperature-regulating layers of hemp and flax. They help keep the mattress closer to a steady temperature through the night.
Springs
The support core holds 19,170 pocket springs with adaptive, pressure-relieving micro springs, hand sewn into calico pockets. The micro springs respond to smaller contours, which means pressure points like hips and shoulders get more precise support.
Layer details from featherandblack.com product page, September 2026.
Key benefits
- Fits almost any room: At 90cm wide, it leaves floor space free in a compact bedroom, so we suggest allowing at least 2.1m x 2.8m around it.
- Full luxury build at single size: The single carries the same 19,170 springs and natural fibre layers as the larger sizes, so a solo sleeper gives up nothing in construction.
- Good fit for a working spare room: In a spare room that shares space with a desk, the single keeps a walkway clear while still offering guests a genuinely comfortable bed.
- Cool for one: Hemp and flax layers regulate temperature naturally, which means a solo sleeper on a firm surface stays closer to a steady temperature through the night.
- Easy bedding to buy: Standard single sheets fit, although at 33cm deep you should check yours are cut for deeper mattresses before buying.
This size suits you if...
You sleep alone, want firm support from all-natural materials, and would rather buy the best single than a middling double. It also suits a guest room where you want visitors to sleep as well as you do, or a compact bedroom where a 90cm width is the practical limit and you refuse to compromise on the mattress itself.
Consider another size if...
You share the bed regularly, or you sleep alone but sprawl. We'd recommend the UK double instead, which is 45cm wider than the UK single and the same length; allow at least 2.6m x 2.8m of floor space for it.
Similar Mattresses in This Price Range
Did you know? On Mattress Unboxed we have over 1,000 different mattresses to suit all types of sleepers. View all mattresses.
FAQ's
What size is the Flaxby Platinum Solstice UK single?
It measures 90 x 190cm, which is 3ft x 6ft 3in, the standard UK one-person size. It is also 33cm deep, noticeably more than most singles, so measure your bed frame and check your fitted sheets stretch to that depth.
Will the Flaxby Platinum Solstice UK single fit a bunk or mid sleeper?
Probably not. Raised frames set a maximum mattress depth so the safety rail still sits above the sleeping surface, and at 33cm the Platinum Solstice exceeds most of those limits. Check your frame's stated maximum before buying; for bunks and cabin beds, a shallower single is usually the safer choice.
What room size do I need for a UK single mattress?
We suggest allowing at least 2.1m x 2.8m of floor space for a UK single, which gives you room to walk around the bed and open drawers or a wardrobe. That makes it a comfortable fit in box rooms, lofts with a narrow usable footprint, and spare rooms that double as an office.
Is the Flaxby Platinum Solstice UK single a sensible buy for a child's room?
It fits a standard child's bed frame, but this is a firm mattress built for adult body weights, and a light child may find it too unyielding to sink into. It makes more sense for a teenager or adult. For a young child's room, a softer and shallower single would serve better.
How much smaller is the UK single than the UK small double?
The UK single is 30cm narrower than the UK small double, and the two are the same length. If your room can take the extra width, we suggest allowing at least 2.4m x 2.8m for the UK small double, which gives a solo adult more room to spread out.