Last seen for £279 at Mattress Man on 20th October 2026
Silentnight Special Sleep Small Double Mattress
The Silentnight Special Sleep is one of the more affordable routes into a Silentnight mattress, using the brand's Miracoil spring system.
- Firm feel for back & front sleepers
- Reinforced edges for more sleeping area
- Rotate head-to-toe, no flipping
Save with the previous model
Some retailers still sell the earlier version of this mattress for less than the current model's best price.
More available sizes
Last seen for £279 at Mattress Man on 20th October 2026
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Mattress details
Mattress
Silentnight Special Sleep Mattress
Size
Firmness
Firm
Construction
Open Coil Spring
Depth (cm)
Layers
2
Layer Details
Comfort layer
Eco Comfort Fibre fillings sit on top of the springs. This is a simple fibre layer rather than foam, so expect a firm, fairly traditional surface rather than a deep, hugging one.
Spring system
A Miracoil open coil system with no roll-together and reinforced edges for more sleeping area. It gives you a firm, supportive base, and the stronger edges mean you can use more of the bed's width.
Layer details from mattressman.co.uk and robertdyas.co.uk product pages, October 2026.
Key benefits
- Real space for one: At 120cm wide, the UK small double is 30cm wider than the UK single, which means a solo adult can change position freely without meeting the edge.
- Fits rooms a double crowds: It is 15cm narrower than the UK double, which can be the difference between a bed that fits a box room or loft conversion and one that dominates it.
- Firm zoned support across the full width: The Miracoil system runs zoned support through the mattress, so a solo sleeper gets the same resistance under hips and shoulders wherever they end up lying.
- A sensible guest room choice: Two people can share for the occasional night, so it works in a spare room or holiday let where nobody sleeps as a couple nightly.
- Standard UK sizing: The 4ft small double is a standard UK size, so frames and fitted sheets are straightforward to find.
This size suits you if...
You sleep alone and have outgrown a single, perhaps a teenager whose room can't give up any more floor space, and you want a firm bed that holds you up rather than cradles you. It also fits if you're furnishing a compact spare room or loft conversion where guests share only occasionally, and a full double would leave no room to walk around the bed.
Consider another size if...
You and a partner would sleep on it every night, because 120cm is a squeeze for two firm-mattress sleepers long term. We'd recommend the UK double instead, allowing a room of at least 2.6m x 2.8m.
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FAQ's
Is a small double big enough for two people on the Silentnight Special Sleep?
For occasional nights, yes. At 120cm wide it works in a guest room or holiday let where couples stay now and then. For every night, that width leaves little personal space, especially on a firm mattress where you don't sink towards the middle. Couples sharing nightly would be more comfortable on the UK double, which is 15cm wider.
What room size do I need for the Silentnight Special Sleep small double?
We suggest a room of at least 2.4m x 2.8m. The mattress itself is 120 x 190cm, so that allowance leaves space to open the door, walk down one side and fit a small chest of drawers. In a box room or loft conversion, measure the usable floor rather than the full footprint before deciding.
How much wider is the 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: a solo sleeper who feels hemmed in on a single gets noticeably more room without stepping up to a full double's footprint.
Does the firm feel matter more in a small double?
Slightly, yes. On a narrower mattress a firm surface keeps you supported right up to the edges rather than rolling towards the centre, which suits a solo sleeper using the full width. Lightweight side sleepers may still find the Miracoil feel a little unyielding on shoulders and hips, whatever the size.
What bedding fits the Silentnight Special Sleep in a small double?
You need small double (4ft) fitted sheets, as standard double sheets will sit loose on a 120cm mattress. For the top layer, a standard double duvet works well and gives a solo sleeper generous overhang on both sides. Because 4ft is a standard UK size, both are easy to find on the high street.