Firmness
Type
Open Coil Spring
Depth (cm)
24
Number of Layers
2
Trial Period (nights)
60
Warranty (years)
5
Price Range
£239 to £439
Best Sleeping Position(s)
Certifications
Assessed from Silentnight's published specification for this mattress, captured September 2026, and from regular price comparison across our UK retail partners.
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 & what's inside
- 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.
Who's it NOT for?
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.
Silentnight Miracoil Ortho Mattress
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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. Prices run from £239 to £439 depending on the size you choose, starting from £239.00.
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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