Silentnight Ortho Dream Star Miracoil Double Mattress
The Silentnight Ortho Dream Star is an extra firm mattress built around Miracoil springs, Silentnight's open coil system with separate support zones, which means your weight is spread evenly and your spine is held in line rather than sinking in.
- Extra-firm support for back sleepers
- Hypoallergenic & handcrafted in the UK
- 100-night trial & 5-year guarantee
£277
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Silentnight Ortho Dream Star Miracoil Mattress
More available sizes
Mattress details
Mattress
Silentnight Ortho Dream Star Miracoil Mattress
Size
Firmness
Extra Firm
Construction
Open Coil Spring
Depth (cm)
22
Layers
3
Layer Details
Damask cover
A finely woven, durable fabric that feels soft against the skin, which means a pleasant surface without the heat retention some covers suffer from. It's built for long-lasting performance too.
Eco Comfort Fibre
Fibres made from recycled materials and 100% sustainable sources, offering breathable, fresh comfort. This is the layer that softens the very top of an otherwise rigid mattress, though only slightly.
Miracoil Springs
Silentnight's own open coil spring system, arranged into separate support zones. In practice this means your weight is distributed evenly and your spine gets consistent support across the whole surface.
Layer details from mattressonline.co.uk product page, September 2026.
Key benefits
- Fits typical UK bedrooms: At 135 x 190cm, the UK double leaves space for a wardrobe and drawers where a UK king would crowd the walls.
- Zoned support for two: Miracoil springs use separate support zones, which means each of you gets firmer resistance where your body is heaviest, whatever your weight difference.
- Room for bedside tables: In a room around 3m x 3m, a UK double usually leaves comfortable space for tables on both sides of the bed.
- Easy to dress: Standard double sheets and a 200 x 200cm duvet are stocked everywhere, useful if you're furnishing a guest room on a budget.
- Manageable to move in: A 4ft 6in x 6ft 3in mattress turns tight staircases and narrow landings more easily than the two larger sizes in this range.
This size suits you if...
You share the bed and want the traditional couples' size in a room where a UK king would feel cramped, you both prefer a genuinely firm surface, or you're kitting out a guest room that regularly hosts visiting couples and want an affordable extra firm option that fits without squeezing past furniture.
Consider another size if...
You're a couple who move around at night, since 67.5cm each on an open coil design means you'll feel each other's movement. We'd recommend the UK king instead, which is 15cm wider and 10cm longer; allow at least 2.7m x 2.9m for it.
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FAQ's
Is the Silentnight Ortho Dream Star UK double big enough for a couple?
For most couples, yes: 135 x 190cm gives 67.5cm each for two people sharing. Bear in mind this is an open coil mattress, so you may notice a partner's movement more than on pocket springs. If either of you is tall or a restless sleeper, the UK king adds 15cm of width and 10cm of length.
What room size do I need for the Ortho Dream Star in a UK double?
We suggest allowing at least 2.6m x 2.8m, with around 3m x 3m the comfortable norm. That gives you walking room on both sides and space for bedside tables, which matters in a typical UK second bedroom or first flat where a wardrobe and drawers also need to fit.
Should I get the Ortho Dream Star in a UK double or a UK king?
Choose the UK double if your room is on the smaller side or you want the widest choice of affordable bedding. The UK king is 15cm wider and 10cm longer, which helps taller sleepers and restless couples, but you'll need a room of at least 2.7m x 2.9m to fit it comfortably.
Will the UK double Ortho Dream Star fit up a narrow staircase?
At 4ft 6in x 6ft 3in and 22cm deep, it's easier to manoeuvre than the UK king or UK super king, though open coil mattresses don't fold or roll the way some foam designs do. Measure any turning stairs or tight landings before ordering, particularly in older terraced houses.
Is a UK double Ortho Dream Star a good choice for a guest room?
It suits a guest room well if your visitors tend to prefer a firm bed: the extra firm surface divides opinion, so it's a slightly bolder choice for guests than a medium feel. The UK double footprint fits most spare rooms, and standard double bedding keeps running costs down. Compare the retailers listed on this page for current pricing.