Silentnight Ortho Dream Star Miracoil Small Double Mattress
The Silentnight Ortho Dream Star is an extra firm mattress built around Miracoil springs, Silentnight's open coil system with separate support zones, which means your weight is spread evenly and your spine is held in line rather than sinking in.
- Extra-firm support for back sleepers
- Hypoallergenic & handcrafted in the UK
- 100-night trial & 5-year guarantee
£277
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Silentnight Ortho Dream Star Miracoil Mattress
More available sizes
Mattress details
Mattress
Silentnight Ortho Dream Star Miracoil Mattress
Size
Firmness
Extra Firm
Construction
Open Coil Spring
Depth (cm)
22
Layers
3
Layer Details
Damask cover
A finely woven, durable fabric that feels soft against the skin, which means a pleasant surface without the heat retention some covers suffer from. It's built for long-lasting performance too.
Eco Comfort Fibre
Fibres made from recycled materials and 100% sustainable sources, offering breathable, fresh comfort. This is the layer that softens the very top of an otherwise rigid mattress, though only slightly.
Miracoil Springs
Silentnight's own open coil spring system, arranged into separate support zones. In practice this means your weight is distributed evenly and your spine gets consistent support across the whole surface.
Layer details from mattressonline.co.uk product page, September 2026.
Key benefits
- Real width for one: The UK small double is 30cm wider than the UK single, which means a solo back sleeper on this rigid surface can change position without meeting the edge.
- Fits compact rooms: At 15cm narrower than the UK double, it slots into box rooms and studio flats where a bigger frame would block walkways or the door swing.
- Suits solo firm sleepers: Open coil designs transfer more movement than pocket springs, but with one person on a 120cm surface that drawback largely disappears.
- Zoned support across the width: The Miracoil system uses separate support zones, so however you position yourself across the extra 30cm of width, your spine gets the same firm alignment.
- Easy to dress: 4ft is a standard UK size, so small double fitted sheets are simple to find, and a standard double duvet drapes generously over it.
This size suits you if...
You're a solo adult who finds a UK single restrictive but doesn't have the floor space a UK double demands, you sleep on your back or carry aches that call for a genuinely rigid surface, or you're furnishing a guest room or holiday let where couples stay occasionally rather than nightly.
Consider another size if...
Two of you will share it every night: the extra firm open coil build means you'll feel each other move, and 120cm is tight for nightly couples. We'd recommend the UK double instead, allowing at least 2.6m x 2.8m of room.
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FAQ's
Is a small double big enough for a couple on the Silentnight Ortho Dream Star?
For occasional nights, yes, which is why this size suits guest rooms. For every night, we'd say no. At 120cm wide you each get less personal space than the mattress name suggests, and because the Miracoil system is an open coil design, you'll notice your partner's movement more than on pocket springs. Nightly couples should look at the UK double.
What size room do I need for a small double mattress?
We suggest allowing at least 2.4m x 2.8m for the UK small double. That leaves enough clearance to walk round the bed and open drawers or a wardrobe. It's the size that often decides between a proper double bed and a single in box rooms and loft conversions, where a standard double leaves no standing room beside it.
How much bigger is a small double than a single?
The UK small double is 30cm wider than the UK single, and the two are the same length at 190cm. That extra width is the whole point of this size: an older teenager or a solo adult who has outgrown a single gains real stretching room without the footprint jump a UK double brings.
Will standard double bedding fit the small double Ortho Dream Star?
You'll want small double (4ft) fitted sheets, since standard double sheets will bag loosely on the 120cm width. For the top layer a standard double duvet works well, draping a little further down each side than it would on a UK double, which looks quite generous rather than untidy.
Is the extra firm feel a problem in a smaller size?
The feel is identical across every size: unapologetically hard, with zoned Miracoil support that back sleepers and those with aches tend to rate. What changes in the UK small double is who's on it. A solo sleeper avoids the movement transfer open coils can show with two people, so this size plays to the mattress's strengths.