Last seen for £239 at Silentnight on 30th September 2026
Silentnight Comfort Miracoil Essentials Single Mattress
The Silentnight Comfort Miracoil Essentials is a firm mattress at the affordable end of Silentnight's range, available in five UK sizes from Single to Super King.
- Firm support with even weight spread
- Memory layer softens pressure points
- 60-night trial & 5-year guarantee
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 £239 at Silentnight on 30th September 2026
Last seen for £369 at Silentnight on 30th September 2026
Last seen for £459 at Silentnight on 30th September 2026
Last seen for £299 at Silentnight on 30th September 2026
Last seen for £309 at Silentnight on 30th September 2026
Mattress details
Mattress
Silentnight Comfort Miracoil Essentials Mattress
Size
Firmness
Firm
Construction
Latex
Depth (cm)
21
Layers
5
Layer Details
Cover
Luxury soft micro quilt cover
Top Layer
Miracoil zoned spring system
Key benefits
- Slim enough for raised frames: At 21cm deep, this mattress sits below the safety rail height most bunk, cabin and mid-sleeper frames require, which many deeper mattresses fail.
- Leaves room for everything else: A 90cm width keeps floor space free in a child's room, so the bed isn't fighting the wardrobe, desk and toy storage for space.
- Firm support for growing sleepers: The zoned spring unit gives even, firm support, which suits children and teens who need a supportive base rather than a soft, sink-in surface.
- Two beds fit where one double won't: For siblings sharing or a guest room set up with twin beds, two UK singles can fit with a walkway between them.
- Cheap, easy bedding: Standard single sheets and a 135 x 200cm duvet fit, and the shallow 21cm build means ordinary fitted sheets stretch over it without a struggle.
This size suits you if...
You're buying for a child or teenager who needs firm, even support, you're furnishing a bunk, cabin or mid-sleeper frame where a slim 21cm mattress is a genuine advantage, or you have a spare room that moonlights as an office and want a proper bed for guests without giving up the desk. It also suits a first flat or student room where the frame is provided and the mattress isn't.
Consider another size if...
You're an adult who sleeps in this bed every night and finds 90cm restrictive when you turn over. The UK small double is 30cm wider at the same length; allow at least 2.4m x 2.8m for it.
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FAQ's
Will the UK single Silentnight Comfort Miracoil Essentials fit a bunk bed?
It's a strong candidate. The UK single measures 90 x 190cm, the standard footprint for bunk, cabin and mid-sleeper frames, and the slim 21cm depth helps it sit below the safety rail on most raised beds. Check your frame's maximum mattress depth before ordering, but 21cm passes far more often than deeper builds do.
What room size do I need for a UK single mattress?
We suggest allowing at least 2.1m x 2.8m of floor space for a UK single. That leaves enough room to make the bed and move around it. Because the mattress is only 90cm wide, it's one of the few sizes that works under a loft conversion slope or in a box room alongside a desk and wardrobe.
Is the Comfort Miracoil Essentials UK single good for a child or teenager?
Yes, with one caveat. The firm zoned springs give even support, and the hypoallergenic, dust mite free build is reassuring for young sleepers with allergies. The caveat is lightweight side sleepers: a firm surface may not let a slight teen's shoulder and hip sink in enough, so a softer mattress could suit them better.
Should I choose the UK single or the UK small double for a teenager?
It comes down to room size. The UK single is 30cm narrower than the UK small double, and the two are the same length, so sizing up buys width rather than legroom. If the bedroom offers at least 2.4m x 2.8m, the UK small double gives a growing teen more space to spread out.
Does this mattress work for a spare room that's also an office?
It's well suited to that setup. The UK single's 90cm width leaves space for a desk and chair in the same room, and the firm feel holds up well for occasional guest use. The prices shown on this page are updated as retailers change them, so compare before you buy.