Silentnight Miracoil Sleep Mattress
Mattress
Silentnight Miracoil Sleep Mattress
Size
Firmness
Medium Firm
Construction
Depth (cm)
Layers
Layer Details
- Real space for one sleeper: At 30cm wider than the UK single, it lets a solo adult change position freely without paying for width they'll never use.
- Fits compact double bedrooms: It's 15cm narrower than the UK double, which can be the difference between a door that opens fully and one that doesn't in a box room or studio.
- Medium firm support across the full width: The Miracoil spring system gives a slightly firmer, supportive feel that back and front sleepers tend to get on well with.
- Copes with occasional couple use: A visiting couple can share a UK small double comfortably for a night or two, which makes it a sensible guest room choice.
- Standard 4ft bedding and frames: Small double is an established UK size, so fitted sheets and bed frames are easy to find on the high street.
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 that hosts couples occasionally rather than nightly, or you're kitting out a teenager's bedroom where floor space still matters. Allow at least 2.4m x 2.8m of room and the UK small double sits comfortably.
Consider another size if...
You share the bed every night, because 120cm is tight for two adults long term. The UK double is 15cm wider and needs a room of at least 2.6m x 2.8m, so we'd recommend that instead if yours allows.
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Is a small double Silentnight Miracoil big enough for a couple?
For occasional nights, yes. At 120cm wide, a visiting couple can share it comfortably for a weekend, and the medium firm Miracoil springs keep support consistent across the width. For every night, though, most couples find it cramped, and we'd suggest the UK double, which is 15cm wider and the same length.
What room size do I need for the Silentnight Miracoil in a small double?
We suggest a room of at least 2.4m x 2.8m for a UK small double. That leaves enough space to walk round the bed and open drawers or a wardrobe. If your room is bigger, it's worth checking whether the UK double would fit; we suggest at least 2.6m x 2.8m for that size.
How much wider is the small double than the single in this mattress?
The UK small double is 30cm wider than the UK single, and both are the same 190cm length. That extra width is the whole point of this size: a solo sleeper who finds a single restrictive gets real stretching room without stepping up to a full double footprint.
Is the small double a good choice for a teenager?
Often, yes. A teenager who has outgrown a single gets 30cm of extra width, while the room keeps 15cm of floor space compared with a UK double. The medium firm feel suits back and front sleepers well, although a lightweight side sleeper may find it slightly firm at the shoulder.
Will the small double fit in a loft conversion or box room?
That's exactly where this size makes sense. Sloping ceilings and narrow doorways often rule out a 135cm double, and the UK small double's 120cm width can be what keeps a walkway clear on at least one side of the bed. Measure the usable floor area first and allow at least 2.4m x 2.8m.