Silentnight Amsterdam Miracoil Ortho Mattress
Mattress
Silentnight Amsterdam Miracoil Ortho Mattress
Size
Firmness
Firm
Construction
Depth (cm)
24
Layers
3
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.
- Real space for one: At 30cm wider than a UK single, it gives a solo adult genuine stretching room on the firm, zoned Miracoil support this mattress is built around.
- Fits compact double bedrooms: It's 15cm narrower than a UK double, which can be the difference between a door that clears the bed and one that doesn't.
- Firm support in a smaller footprint: The zoned Miracoil springs give the same pronounced, unyielding support as the larger sizes, so downsizing the room doesn't mean downgrading your back.
- Cool surface for a snug room: The Eco Comfort Fibre layer helps evaporate body heat, useful in the smaller rooms this size tends to end up in, where air can sit still.
- Standard 4ft size: Small double frames and bedding are widely stocked in the UK, so kitting out this mattress is straightforward: 4ft fitted sheets with a standard double duvet.
This size suits you if...
You sleep alone, like a firm feel, and have outgrown a single but can't spare the floor space a double demands. Or you're furnishing a box room, loft conversion or small second bedroom where 120cm of width is the sensible ceiling, perhaps for a teenager who needs proper orthopaedic support without swallowing the room. It also suits a guest room where couples stay occasionally rather than nightly.
Consider another size if...
You share the bed every night, because 120cm is snug for two adults long term, especially on a firm surface where you can't sink towards each other. We'd recommend the UK double instead, which is 15cm wider; allow at least 2.6m x 2.8m for it.
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Is a small double big enough for a couple on the Silentnight Amsterdam?
For occasional nights, yes, which makes this size a practical guest room choice. For every night, 120cm across is tight for two adults, and the extra firm surface means you lie flat rather than rolling together, so you'll feel the width. Couples sharing nightly would be better served by the UK double, which is 15cm wider.
What room size do I need for a small double mattress?
We suggest allowing at least 2.4m x 2.8m for the UK small double. That leaves enough room to walk round the bed and open the door comfortably. In a box room or studio, measure before you buy: the 15cm saved against a UK double is often exactly what keeps the layout workable.
Is the small double a good size for a teenager?
It's a sensible step up from a single for a growing teenager: the UK small double is 30cm wider than the UK single and the same length, so it adds spreading room without taking more length from the room. The firm, zoned Miracoil support suits back sleepers well, though lightweight side sleepers may find it a little hard.
What bedding fits the Silentnight Amsterdam in a small double?
Use small double (4ft) fitted sheets to match the 120 x 190cm footprint, paired with a standard double duvet, which drapes generously over a 4ft mattress. Small double bedding is widely stocked in the UK, so you're choosing from a standard size rather than hunting for something unusual.
Should I size up to the double instead of the small double?
If your room allows it, the UK double gives you 15cm more width at the same length, and we suggest at least 2.6m x 2.8m for it. If you sleep alone, the small double is usually plenty. The mattress itself is identical in feel either way, so let the room and who's sleeping on it decide. Compare the retailers listed on this page for both.