Feather & Black Belvoir Small Double Mattress
The Feather & Black Belvoir is a firm tension pillowtop mattress that pairs 1,015 individually wrapped pocket springs (in the king size) with a layer of memory foam, which means you get firmer support underneath with a softer, cushioned surface on top.
- Firm support, cushioned pillow top
- Minimises partner disturbance
- 100-night trial
£799
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Feather & Black Belvoir Mattress
More available sizes
Mattress details
Mattress
Feather & Black Belvoir Mattress
Size
Firmness
Firm
Construction
Foam
Pocket Spring
Memory Foam
Depth (cm)
28
Layers
3
Layer Details
Knitted pillowtop
A soft knitted pillowtop with a sumptuous pillow top finish, which adds extra depth. In practice this gives a cushioned first impression before you reach the firmer support below.
Memory foam
A layer of soothing memory foam that relieves pressure and works with the pocket springs beneath. It adapts to your movements during the night, so you get embracing support rather than a rigid feel.
Pocket springs
1,015 individually wrapped pocket springs in the king size. Each spring moves independently, which means support that follows your shape and less disturbance from a partner shifting about.
Layer details from featherandblack.com product page, September 2026.
Key benefits
- Room to sprawl alone: The UK small double is 30cm wider than the UK single, which means a solo sleeper can shift position freely without an elbow reaching the edge.
- Fits a compact bedroom: At 15cm narrower than the UK double, this size can leave the wardrobe usable and the door clearing in a box room or studio.
- Firm support across the full width: Firm tension pocket springs support you the same whether you sleep centred or roam, useful when the extra width tempts you to spread out.
- Handles the occasional shared night: The individually wrapped pocket springs limit motion transfer, so a couple staying in a guest room can share it comfortably for a night or two.
- Easy to dress: 4ft is a standard UK size, so fitted sheets are simple to find, and a standard double duvet drapes over it nicely.
This size suits you if...
You sleep alone and have outgrown a single, perhaps a teenager whose room can't spare more floor space, or you need a double bed for a box room, loft conversion or small second bedroom where every centimetre of width matters. It also suits a guest room that hosts couples occasionally rather than every night, provided your visitors get on with a firm mattress.
Consider another size if...
You share the bed every night, in which case the UK small double will feel snug over time. We'd recommend the Belvoir in a UK double instead, allowing a room of at least 2.6m x 2.8m.
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FAQ's
Is a small double Belvoir big enough for a couple?
For occasional nights, yes. The Belvoir's individually wrapped pocket springs move independently, so one person turning over disturbs the other less than you might expect on a bed this width. For nightly sharing, though, the UK small double is a squeeze, and the UK double, which is 15cm wider, is the better long-term choice.
Will the Belvoir small double fit in a box room?
That is exactly where this size makes sense. We suggest a room of at least 2.4m x 2.8m, which leaves space to open the door and walk around the bed. Measure with the bed frame in mind, since frames add a little to the mattress's 120 x 190cm footprint.
Is the small double Belvoir a good choice for a teenager?
It suits a teenager who has outgrown a single but whose room can't take a full double. The UK small double is 30cm wider than the UK single at the same length, so they gain real space to stretch out, and the firm tension gives solid support for a growing back or front sleeper.
What bedding does the Belvoir need in this size?
Use small double (4ft) fitted sheets, which are widely stocked because 4ft is a standard UK size. Bear in mind the Belvoir is 28cm deep with its pillowtop, so check the sheet's stated depth before buying. A standard double duvet works well on top.
Where can I buy the Belvoir in a UK small double?
Compare the retailers listed on this page. The prices shown here are live and updated as retailers change them, so you're seeing current stock rather than a snapshot. If availability in this size looks thin, it's worth checking back, as retailer listings change regularly.