Firmness
Firm
Type
Orthopaedic
Depth (cm)
24
Number of Layers
3
Trial Period (nights)
100
Warranty (years)
5
Price Range
£364 to £534
Best Sleeping Position(s)
Certifications
Assessed from the specification published by Mattress Online, captured September 2026, and from regular price comparison across our UK retail partners.
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 & what's inside
- 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.
Who's it NOT for?
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.
Silentnight Amsterdam Miracoil Ortho Mattress
Across 479 verified owner reviews on the Mattress Online product page, the Amsterdam scores 4.6 out of 5, with customers reporting improved sleep and reduced back pain once they'd adjusted to the firm feel. The firmness divides opinion, though, and some owners felt springs through the material at the edges.
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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, priced from £364 to £534. There's no single or standard small size, so it's one for shared or larger beds.
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