Silentnight Ortho Dream Star Miracoil 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
£223
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The Silentnight Ortho Dream Star has a layer of Eco Comfort Fibre made from recycled materials above its springs, topped with a damask cover that stays cool to the touch. It's 22cm deep and sits at the affordable end of the market. It suits sleepers who genuinely want a rigid surface, particularly back sleepers or those with back issues. If you prefer a softer, cushioned feel, this is the wrong mattress for you.
Mattress specifications
Firmness
Extra Firm
Type
Open Coil Spring
Depth (cm)
22
Number of Layers
3
Trial Period (nights)
100
Warranty (years)
5
Price Range
£223 to £443
Best Sleeping Position(s)
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?
Extra firm mattresses are a niche, and this one serves it well. The Miracoil spring system uses zoned support, which means firmer resistance where your body is heaviest, so heavier sleepers and back sleepers get proper spinal alignment rather than the sag a soft mattress can allow. The Eco Comfort Fibre layer adds breathable comfort from recycled, sustainable sources, and the mattress is hypoallergenic, vegan-friendly and handcrafted in the UK. It comes in five sizes from UK Single to UK Super King. Yes, the feel is unapologetically hard, but that firmness is precisely why owners with aches and pains rate it. It comes with a 5 year guarantee.
Key features & 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.
Best suited for?
Back sleepers
The extra firm surface and zoned Miracoil springs give firmer resistance where your body is heaviest, so your spine stays level instead of sinking into a soft mattress.
Heavier sleepers
Zoned support puts firmer resistance where the body is heaviest, which means a rigid surface that resists sagging under more weight.
Budget buyers
It sits at the affordable end of the market while still offering three layers, a 100 night trial and a 5 year guarantee.
Eco-conscious buyers
The Eco Comfort Fibre layer is made from recycled materials and sustainable sources, which means a greener filling above the springs.
Warm sleepers
The damask cover stays cool to the touch and the fibre layer is breathable, which means less trapped heat as you sleep.
Side sleepers, especially lighter ones, will likely find the extra firm surface too hard on shoulders and hips. Anyone wanting a plush, sink-in feel should look elsewhere, and at 22cm deep it's shallower than some may expect. It's also an open coil design, so couples may notice more movement transfer than with pocket springs.
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 Ortho Dream Star Miracoil Mattress
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FAQ's
How firm is the Silentnight Ortho Dream Star mattress?
It's rated Extra Firm, the hardest end of the scale. The Miracoil zoned springs give a rigid, supportive feel with only a slight softening from the Eco Comfort Fibre layer on top. It suits back sleepers and those who want firm support, but lighter side sleepers may find it uncomfortable.
Does the Silentnight Ortho Dream Star come with a trial?
Mattress Online lists a 100-night trial with this mattress. That trial is the retailer's own offer rather than a Silentnight guarantee, so check the terms wherever you buy, as they may differ between shops.
What is the Silentnight Ortho Dream Star made of?
Three layers: a damask cover that stays cool to the touch, Eco Comfort Fibre made from recycled materials and 100% sustainable sources, and Miracoil springs, Silentnight's zoned open coil system. It's hypoallergenic, vegan-friendly and handcrafted in the UK.
How deep is the Silentnight Ortho Dream Star mattress?
The dimensions table lists it at 22cm deep for all sizes, though the listing page quotes slightly different figures in places. That's shallower than many modern mattresses, so deep fitted sheets aren't necessary.
What guarantee does the Silentnight Ortho Dream Star have?
It comes with a 5 year guarantee, as listed on the mattressonline.co.uk retailer page. That covers manufacturing faults rather than normal wear, so keep your proof of purchase.
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