Komfi Unity Pocket 1000 Small Double Mattress in a Box
The Komfi Unity Pocket 1000 is a pocket sprung mattress delivered rolled in a box, available in five UK sizes from Small Single through to King.
- Minimises partner disturbance
- Easy to get up narrow stairs
- Includes small single & small double
£221.16
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Komfi Unity Pocket 1000 Mattress in a Box
More available sizes
Mattress details
Mattress
Komfi Unity Pocket 1000 Mattress in a Box
Size
Firmness
Medium
Construction
Pocket Spring
Rolled
Depth (cm)
Layers
2
Layer Details
Reflex foam top layer
A 3cm layer of high-density Reflex foam sits at the top of the mattress. It adds a layer of cushioning over the springs, so the surface feels softer than bare springs would.
Pocket spring core in Ecofoam
Traditional pocket springs, each moving independently, are encased in Ecofoam made from 100% recycled foam. Because the springs work separately, the mattress can respond to each sleeper, which means less disturbance from a partner's movement. The recycled foam is a plus if you prefer to cut down on waste.
Layer details from komfi.com and archerssleepcentre.co.uk product pages, October 2026.
Key benefits
- Real space for one: At 120cm wide, this is 30cm wider than the UK single, which means a solo adult can change position freely without hanging over the edge.
- Fits where a double will not: It's 15cm narrower than the UK double, so it can be the difference between a door that clears and one that doesn't in a box room or studio.
- Boxed delivery suits tight spaces: The rooms this size fits tend to have narrow stairs and awkward landings, and a compressed, rolled mattress is far easier to carry up them.
- Pocket springs for occasional sharing: Independent pocket springs reduce the ripple when one person moves, useful when a couple shares this size for a night or two in a guest room.
- Standard 4ft bedding: The UK small double is a standard UK size, so small double fitted sheets and frames are easy to find, with a standard double duvet on top.
This size suits you if...
You're a solo adult who has outgrown a single but your room can't take a full double, you're furnishing a guest room or holiday let where couples stay occasionally rather than nightly, or you're downsizing and the bed has to fit the new room rather than the old one. Allow at least 2.4m x 2.8m of floor space and it should sit comfortably.
Consider another size if...
You share the bed every night, in which case 120cm gets tight over time. 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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FAQ's
Is a small double big enough for a couple every night?
For occasional stays, yes: the pocket springs help limit disturbance when one of you moves. For nightly sharing, 120cm is a squeeze for most couples. If your room allows it, the UK double is 15cm wider at the same length, and we suggest at least 2.6m x 2.8m of floor space for it.
What room size do I need for the Komfi Unity Pocket 1000 in a small double?
We suggest allowing at least 2.4m x 2.8m. That leaves enough room to walk round the bed and open drawers, which matters in the box rooms and loft conversions this size usually ends up in. The mattress itself measures 120 x 190cm, or 4ft x 6ft 3in.
Will this small double mattress fit up narrow stairs?
More easily than most. It arrives compressed and rolled in a box, so you're carrying a manageable cylinder rather than manoeuvring a full 120 x 190cm mattress round a tight landing. That makes it a practical pick for studio flats, lofts and second bedrooms where access is awkward.
Is the small double a good choice for a teenager?
Often, yes. It's 30cm wider than the UK single, so a teenager who has outgrown a single gets real stretching room, while the 15cm saving over a UK double can preserve the floor space the room can't afford to lose. The same 190cm length as a single means no extra room needed at the foot.
Where can I buy the Komfi Unity Pocket 1000 in a small double?
Compare the retailers listed on this page; the prices shown here are updated as retailers change them. The UK small double is one of five sizes Komfi offers for this mattress, and 4ft is a standard UK size, so matching frames and fitted sheets are widely available.