Firmness
Medium Firm
Type
Open Coil Spring
Depth (cm)
Number of Layers
Trial Period (nights)
60
Warranty (years)
Price Range
£213 to £395
Best Sleeping Position(s)
Certifications
Assessed from the specification published by Mattress Man, captured September 2026, and from regular price comparison across our UK retail partners.
This is a sensible choice if you want a straightforward, supportive mattress from a familiar name without spending a fortune. The medium firm feel gives decent spinal support, which most back and front sleepers will appreciate, although lightweight side sleepers may find it a little too firm at the shoulder and hip. It holds a 4.7 rating from 417 reviews on mattressman.co.uk, which is a reassuring sign of owner satisfaction. Mattressman lists a 60-night trial and free next day delivery, though those are that retailer's own terms rather than Silentnight's, so check what applies if you buy elsewhere. The lack of published construction detail is a drawback for careful comparers.
Key Features & what's inside
Awaiting up to date specifications. Please check back later.
Who's it NOT for?
Lightweight side sleepers may find the medium firm feel too unyielding around the shoulders and hips. It's also a poor fit for buyers who like to compare specifications closely, since depth, materials and spring details aren't published on the listing. If you prefer the contouring hug of memory foam, look elsewhere.
Silentnight Miracoil Sleep Mattress
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How firm is the Silentnight Miracoil Sleep Mattress?
It's listed as medium firm, which means a supportive feel with less sink than a softer mattress. That tends to suit back and front sleepers, while lighter side sleepers may find it slightly too firm for comfortable pressure relief at the shoulder.
What sizes does the Silentnight Miracoil Sleep Mattress come in?
It's available in UK Single, Small Double, Double, King and Super King. Prices range from £213 to £395 depending on the size you choose, starting from £213.75.
Does the Silentnight Miracoil Sleep Mattress come with a trial?
Mattressman lists a 60-night trial with this mattress. That's the retailer's own offer rather than a Silentnight guarantee, so if you buy from a different shop, check their returns terms before ordering.
How quickly is the Silentnight Miracoil Sleep Mattress delivered?
Mattressman offers free next day delivery on this mattress, with handling of 0 to 1 days and transit of 1 to 3 days. Delivery terms are the retailer's, so timings may differ if you buy from another shop.
What springs are in the Silentnight Miracoil Sleep Mattress?
It uses Silentnight's Miracoil spring system, a continuous coil design intended to spread support across the mattress. The listing doesn't state a spring count or the materials in the comfort layers, so ask the retailer if you need those specifics.
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