Silentnight Miracoil Ortho Mattress
The Silentnight Miracoil Ortho is a firm mattress built around Silentnight's zoned Miracoil® spring system, topped with breathable Eco Comfort fibres made partly from recycled plastic bottles.
- Firmer support under your hips
- Supports right to the edge
- 60-night trial & 5-year guarantee
£198.27
Get the lowest price we've found
At 24cm deep, the Silentnight Miracoil Ortho sits at the affordable end of the market. Silentnight lists a 60-night sleep guarantee and a 5-year warranty on its own site, though a page FAQ mentions '5 or 10 year guarantee', so it is worth confirming the exact term before you buy. It comes in five UK sizes, from Single up to Super King. A sensible pick if you want firm, no-frills support on a modest budget.
Mattress specifications
Firmness
Firm
Type
Open Coil Spring
Depth (cm)
24
Number of Layers
2
Trial Period (nights)
60
Warranty (years)
5
Price Range
£198 to £439
Best Sleeping Position(s)
Back Sleeping
Stomach Sleeping
Certifications
Assessed from Silentnight's published specification for this mattress, captured September 2026, and from regular price comparison across our UK retail partners.
Why should you choose this mattress?
The main draw here is firm, zoned support at a low price. The Miracoil® spring system concentrates support where your body carries the most weight, which means your hips and lower back are less likely to sag out of line. Silentnight also says the system lets you sleep right to the edge without rolling off, useful if you share a bed and need every inch of it. The Eco Comfort fibre layer on top is breathable and designed to reduce moisture build-up, so hot sleepers get a little help too. Add Silentnight's stated delivery within 48 hours (Mon-Fri, excluding Bank Holidays) or within 14 days, and it is a straightforward, low-fuss purchase.
Key features & layer details
Eco Comfort Fibres
A comfort layer made with Silentnight's Eco Comfort fibres, partially made from recycled plastic including bottles. It is breathable, helps regulate temperature and reduces moisture build-up, which means you should feel less clammy overnight.
Miracoil® springs
Silentnight's Miracoil® support system gives zoned support where your body needs it most, so heavier areas like your hips get firmer resistance. It also supports right to the edge of the bed and is designed to limit partner disturbance when one of you moves.
Layer details from silentnight.co.uk product page, September 2026.
Best suited for?
Budget buyers
The copy places it at the affordable end of the market, offering firm, no-frills support with a simple two-layer build for those watching what they spend.
Couples
Miracoil springs support right to the edge and are designed to limit partner disturbance, so you can use the full width of the bed without rolling off.
Back sleepers
Zoned Miracoil support gives heavier areas like the hips firmer resistance, which means your body should stay better aligned on a firm surface.
Warm sleepers
The Eco Comfort fibre layer is breathable and reduces moisture build-up, so you should feel less clammy overnight than on a denser, plusher top.
Eco-conscious buyers
The Eco Comfort fibres in the top layer are partially made from recycled plastic, including bottles, which gives a small sustainability angle at a low cost.
This is a firm mattress, so lightweight side sleepers may find it too unyielding around the shoulders and hips. If you prefer a soft, cushioned sink-in feel, or want deep layers of memory foam, look elsewhere. It is a simple two-layer build, so anyone after a plush hybrid will find it a little basic.
Save on an earlier or ex-display model
Some retailers still sell the earlier version of this mattress, or ex-display and returned stock at a lower price. These are the sizes where it costs less than the current model's best price.
Silentnight Miracoil Ortho Mattress
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FAQ's
Is the Silentnight Miracoil Ortho mattress firm?
Yes. Silentnight rates it as firm, and the zoned Miracoil® spring system is designed to give solid, even support. Back and front sleepers, and anyone who likes a supportive rather than sink-in feel, are the best fit. Lightweight side sleepers may find it slightly too firm.
How deep is the Silentnight Miracoil Ortho mattress?
It is 24cm deep, made up of an Eco Comfort fibre comfort layer over the Miracoil® spring system. Standard fitted sheets should work fine at this depth.
Does the Silentnight Miracoil Ortho come with a trial?
Silentnight's own site lists a 60-night sleep guarantee, described as a trial period, alongside a 5-year warranty. There is some ambiguity: a page FAQ mentions a '5 or 10 year guarantee' while the headline states 5 years, so check the exact terms at checkout.
What sizes does the Silentnight Miracoil Ortho come in?
Five UK sizes: Single, Small Double, Double, King and Super King.
How quickly is the Silentnight Miracoil Ortho delivered?
Silentnight states delivery within 48 hours (Monday to Friday, excluding Bank Holidays) or within 14 days. Timing may depend on your postcode and the size you order, so confirm at checkout.
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