Silentnight Amsterdam Miracoil Ortho Mattress
The Silentnight Amsterdam Miracoil Ortho is an orthopaedic mattress described on its Mattress Online listing as extra firm, so treat this as a properly solid feel rather than a middling firm.
- Properly firm, zoned support
- Fibres & cover help you sleep cool
- Made without chemical treatments
£178
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At 24cm deep, the Silentnight Amsterdam Miracoil Ortho pairs Silentnight's Miracoil spring system, an open coil design with separate support zones, with a layer of Eco Comfort Fibre made from recycled materials, which means cushioning at the surface without heat building up. It's hypoallergenic, vegan-friendly and free from chemical treatments, and handcrafted in the UK. It comes in four sizes, from small double up to super king. If you want pronounced, unyielding support for your back, this is the sort of mattress built for it.
Mattress specifications
Firmness
Firm
Type
Orthopaedic
Depth (cm)
24
Number of Layers
3
Trial Period (nights)
100
Warranty (years)
5
Price Range
£178 to £244
Best Sleeping Position(s)
Back Sleeping
Stomach Sleeping
Certifications
BS 7177
Assessed from the specification published by Mattress Online, captured September 2026, and from regular price comparison across our UK retail partners.
Why should you choose this mattress?
The main reason to choose the Amsterdam is its support. Miracoil is Silentnight's own open coil system with zoned support, which means the springs work harder under your heavier areas, keeping your spine level and spreading your weight to ease pressure points. The Eco Comfort Fibre layer above adds a little cushioning and helps evaporate body heat, so you shouldn't sleep warm, and the damask cover is durable and doesn't retain heat either. Certifications are reassuring too: it's a National Bed Federation Approved Brand, fire resistant to BS7177: 2008, and made without chemical treatments. Yes, the extra firm feel won't suit everyone, but if firm support is exactly what you're after, that focus is a strength rather than a compromise.
Key features & layer details
Damask cover
A finely woven, durable fabric that feels soft to the touch, which means the firmness underneath isn't harsh against your skin. It doesn't retain heat, so it helps keep the surface cool.
Eco Comfort Fibre
A layer of fibres made from recycled materials that gives cushioning comfort over the springs. It also helps evaporate body heat, which means a cooler night if you tend to run warm.
Miracoil Springs
Silentnight's own open coil system with separate support zones that support the spine and distribute your weight evenly. In practice, that means firmer support where you're heaviest and less pressure on hips and shoulders.
Layer details from mattressonline.co.uk product page, September 2026.
Best suited for?
Back sleepers
Zoned Miracoil springs give firmer support under your heavier areas, which means your spine stays level and your weight spreads evenly across the surface.
Warm sleepers
The Eco Comfort Fibre layer helps evaporate body heat and the damask cover doesn't retain heat, which means a cooler night.
Allergy sufferers
Being hypoallergenic and made without chemical treatments means this mattress suits anyone who wants a cleaner, simpler sleep surface.
Eco-conscious buyers
The comfort layer uses fibres made from recycled materials, and the mattress is vegan-friendly and handcrafted in the UK, which suits those wanting a greener choice.
Front sleepers
Its firm, unyielding feel keeps your hips from sinking too far into the mattress, which helps front sleepers stay more level overnight.
This is an extra firm mattress, so lightweight sleepers and dedicated side sleepers may find it too hard on the hips and shoulders. Across owner reviews on Mattress Online, some people also felt springs through the material at the edges, so if you sit or sleep near the edge, that's worth weighing up.
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 Amsterdam Miracoil Ortho Mattress
Last seen for £534 at Mattress Online on 2nd September 2026
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FAQ's
How firm is the Silentnight Amsterdam Miracoil Ortho mattress?
The Mattress Online product page describes it as extra firm, a step up from a standard firm. It suits people who want pronounced support, particularly for back conditions, although lightweight side sleepers may find it a little too hard.
Does the Silentnight Amsterdam mattress come with a trial?
Mattress Online lists a 100-night trial on this mattress. That's the retailer's own offer rather than a Silentnight guarantee, so if you buy elsewhere, check that seller's terms before ordering.
What guarantee does the Silentnight Amsterdam have?
The Mattress Online listing states a 5 year guarantee. As this appears on a retailer's page rather than Silentnight's own, confirm the guarantee terms with whichever retailer you buy from.
Is the Silentnight Amsterdam Miracoil Ortho good for a bad back?
It's designed as an orthopaedic mattress, with Miracoil zoned springs that support the spine and spread weight to relieve pressure. Across owner reviews on Mattress Online, customers with back conditions report reduced pain after an adjustment period, though the extra firm feel won't suit everyone.
What sizes does the Silentnight Amsterdam mattress come in?
It's available in UK small double, double, king and super king. There's no single or standard small size, so it's one for shared or larger beds.
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