Silentnight Comfort Breathe 1000 Mattress
Mattress
Silentnight Comfort Breathe 1000 Mattress
Size
Firmness
Construction
Depth (cm)
24
Layers
5
Layer Details
- Sleep Surface. A naturally hypoallergenic 100% polyester fabric that's soft and gentle on the skin. A sensible choice if allergies tend to disturb your sleep.
- Comfort Breathe®. Silentnight states these fibres are 15x more breathable than standard memory foam, promoting airflow and regulating temperature. In practice, that means less overnight heat build-up, which hot sleepers will appreciate.
- 1000 Mirapocket Spring Unit. 1000 Mirapocket springs respond individually to your body's movements, which means support where you need it rather than a one-size-fits-all push back. The zoning helps keep your spine aligned.
- Protective Layer. This layer disperses pressure from the spring unit across the mattress. The aim is a longer usable life, as it stops the springs wearing through to the comfort layers above.
- Durable Case. A soft, durable outer case that holds everything together and helps the mattress stay comfortable over the years.
Layer details from silentnight.co.uk product page, September 2026.
- Real room to spread out alone: At 30cm wider than the UK single, a solo sleeper can starfish, roll and shift position without an arm hanging over the edge.
- Fits rooms a double cannot: Being 15cm narrower than the UK double, it can be the difference between a door that clears the bed frame and one that doesn't.
- Cooler sleep in a snug room: Compact bedrooms hold heat, so the Comfort Breathe fibre layer, which lets warmth escape rather than build up, matters more at this size than most.
- Less disturbance for occasional sharing: The 1000 Mirapocket springs move independently, so a guest room couple sharing 120cm won't feel every turn the other makes.
- Easy to dress: The 4ft small double is a standard UK size, so fitted sheets and frames are straightforward to find, paired with a standard double duvet.
This size suits you if...
You sleep alone and a single has started to feel mean, perhaps a teenager who's grown past one but whose room can't spare the floor space. Or you need a double bed in a box room, studio or loft conversion where 15cm of width decides whether you can stand beside the bed. It also suits a guest room that hosts couples occasionally rather than nightly. Allow at least 2.4m x 2.8m of floor space.
Consider another size if...
You share the bed every night and want it to feel like a proper double. At 120cm across, the UK small double is a squeeze for two full-time sleepers, so we'd recommend the UK double instead, allowing at least 2.6m x 2.8m.
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Is a small double big enough for one adult to sleep on every night?
Comfortably, yes. The UK small double is 30cm wider than the UK single at the same 190cm length, which means genuine room to change position without teetering at the edge. For a solo adult it's arguably the most sensible size of the Silentnight Comfort Breathe 1000: proper space without a double's footprint.
Will the Silentnight Comfort Breathe 1000 small double fit in a box room?
Usually, and that's largely the point of it. The mattress measures 120 x 190cm, and we suggest a room of at least 2.4m x 2.8m so you can still open the door and get around the bed. Measure your room before buying, particularly in loft conversions where sloping ceilings eat into usable floor space.
Is the small double Comfort Breathe 1000 okay for a guest room?
It's a good fit. Occasional couples can share 120cm for a few nights, and the independent Mirapocket springs mean one guest turning over won't jolt the other awake. Solo guests get a genuinely spacious bed. We wouldn't suggest it for a couple sleeping on it every night, but for visitors it works well.
Can a couple sleep on the Comfort Breathe 1000 in a small double long term?
We'd advise against it. At 120cm wide you'd each have noticeably less space than on a standard double, and the medium/firm tension means you won't roll towards the middle so much as simply run out of room. For nightly sharing, the UK double is 15cm wider and the better buy.
How do I find the best price on this size?
Prices for the Silentnight Comfort Breathe 1000 in a UK small double change fairly often, so compare the retailers listed on this page. The prices shown here are updated as retailers change them, which saves you opening half a dozen tabs to check each one yourself.