Silentnight Double Sided Miracoil Mattress
Mattress
Silentnight Double Sided Miracoil Mattress
Size
Firmness
Construction
Depth (cm)
24
Layers
3
Layer Details
- Cover. A soft knitted cover that is highly breathable, which means less heat trapped at the surface. It feels soft to the touch rather than stiff or papery.
- Comfort Fillings. Air Plus fibres, breathable comfort fibres that encourage airflow through the mattress. In practice that helps keep the sleep surface feeling fresher through the night.
- Support System. Silentnight's Miracoil spring system, a zoned open coil unit designed to support all parts of the body with individual sleeping zones. The no roll-together design means you are less likely to drift into your partner's side.
- Base Note. The mattress is double sided, so you can flip it to even out wear over time. It arrives flat rather than rolled and boxed, which spares the springs any compression.
Layer details from mattressnextday.co.uk product page, September 2026.
- A slim profile that suits raised frames: At 24cm deep, it leaves room below the guard rail on most bunks, cabin beds and mid sleepers, where a taller hybrid often would not.
- Fits where space is tight: At 90cm wide, it leaves floor free for a desk, wardrobe and toy storage, and we suggest a minimum room of just 2.1m x 2.8m.
- Zoned support in a one-person size: The Miracoil springs are zoned into individual sleeping areas, which means hips and shoulders get support where they need it, useful for a growing teenager.
- Flippable, so it wears evenly: The double sided design lets you rotate and flip it, which spreads wear over time, and a UK single is light enough to turn without help.
- Breathable where children run warm: Air Plus fibres and a knitted breathable cover encourage airflow, which means a fresher-feeling surface for kids who tend to overheat at night.
- Hypoallergenic and UK made: It is hypoallergenic and made in the UK to the BS7177: 2008 fire safety standard, reassuring for a child's first proper mattress.
This size suits you if...
You're buying for a child or teenager moving up to a full-size bed, you need a mattress slim enough for a bunk, cabin or mid sleeper frame, or you're kitting out a spare room, student room or first flat where the frame is a UK single and the budget is modest.
Consider another size if...
You're an adult who shares the bed, even occasionally, or you simply want more room to spread out. We'd recommend the UK double instead, which is 45cm wider and the same length; allow at least 2.6m x 2.8m for it.
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Will the Silentnight Double Sided Miracoil UK single fit a bunk bed?
In footprint, yes: at 90 x 190cm it matches standard UK bunk, cabin and mid sleeper frames. Depth matters more on raised beds, and at 24cm this mattress is slimmer than many hybrids, so it should sit below most guard rails. Do check your frame's maximum mattress depth before ordering, as it varies between models.
What room size do I need for a UK single mattress?
We suggest allowing at least 2.1m x 2.8m of floor space, which gives you room to walk round the bed and open drawers or a wardrobe. That guidance is ours rather than Silentnight's. In practice a UK single is the easiest size to place, and it works even in a loft room where the bed sits under the slope.
Is the UK single Miracoil a good mattress for a child or teenager?
It suits this stage well. The medium-firm, zoned Miracoil springs give proper support for a growing back, the breathable Air Plus fibres help warm sleepers, and it is hypoallergenic. Very lightweight side sleepers may find it slightly firm at the shoulder, so a plusher feel could suit a small child better.
Can one person flip the Silentnight Double Sided Miracoil in a single size?
Yes, and this is one advantage of the UK single over the larger sizes. A 90cm wide sprung mattress is manageable for one adult to rotate and flip, which matters because turning it regularly is how a double sided mattress wears evenly. In a compact room, stand it on its side to turn it rather than swinging it flat.
Is a UK single big enough for an adult to sleep on every night?
For one adult, yes, though it is snug. At 90cm wide and 190cm long it is the standard UK one-person size, fine for a student room or first flat. If you like to spread out, the UK small double is 30cm wider and the same length; we suggest at least 2.4m x 2.8m of room for it.