Firmness
Type
Hybrid
Depth (cm)
27
Number of Layers
4
Trial Period (nights)
365
Warranty (years)
10
Price Range
£480 to £700
Best Sleeping Position(s)
Certifications
Assessed from Silentnight's published specification for this mattress, captured September 2026, and from regular price comparison across our UK retail partners.
The main draw here is the balance of a softer feel with proper support underneath. The 1000 Mirapocket springs are zoned, which means firmer support where your hips and lower back need it and a softer response at the shoulders, helping keep your spine aligned even on a Medium/Soft surface. The ReVo foam has an open-cell structure that lets air move through it, so it should sleep cooler than traditional memory foam. A foam-encapsulated border firms up the edges, useful if you share the bed and end up sleeping near the side. Add the 365-night trial, longer than most brands offer, and it's a fairly low-risk purchase at this price.
Key Features & what's inside
- Vitalize sleep surface. Silentnight says its Vitalize technology absorbs body heat and reflects lost energy back into the body, with claimed benefits for circulation. In practical terms, this is the soft-knit surface you'll feel first.
- High-density ReVo™ foam. An open-cell foam that lets air circulate, which means less of the heat build-up memory foam is known for. Its high density also gives closer body support beneath the softer surface.
- Pocket springs. 1000 zoned Mirapocket springs sit at the core, each moving independently so your partner's movement is less noticeable. The zoning gives firmer support under heavier areas like the hips for better spinal alignment.
- Foam Encapsulated border. A supportive foam wall runs around the base and sides, which means you can sleep right to the edge without that rolling-off feeling. It also helps the mattress keep its shape over time.
Layer details from silentnight.co.uk product page, September 2026.
Who's it NOT for?
If you sleep on your front or simply prefer a firm bed, the Medium/Soft feel will likely be too yielding, and heavier sleepers may sink further than is comfortable. It's also only made in Double, King and Super King, so it won't work for a single bed frame.
Silentnight Just Sleep Dream Mattress
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Is the Silentnight Just Sleep Dream mattress soft or firm?
Silentnight rates it Medium/Soft. That means a cushioned, gently contouring surface rather than a firm one, with the 1000 zoned pocket springs providing the underlying support. It suits side sleepers and lighter bodies best, although front sleepers and firm-bed fans may find it a little too soft.
Does the Silentnight Just Sleep Dream come with a trial?
Yes. Bought from Silentnight's own site, it comes with a 365-night trial and a 10-year guarantee, so you have a full year to decide whether it suits you.
How thick is the Silentnight Just Sleep Dream mattress?
It's 27cm deep, a substantial depth that accommodates the pocket spring core and foam comfort layers. Standard deep fitted sheets should fit fine, though it's sensible to check your sheet depth before ordering.
Does the Silentnight Just Sleep Dream sleep hot?
It's designed to run cooler than a typical memory foam mattress. The ReVo foam layer has an open-cell structure that improves air circulation, and the pocket spring core naturally allows airflow. Silentnight also says the Vitalize surface manages body heat, though very hot sleepers may still prefer an all-spring design.
What sizes does the Silentnight Just Sleep Dream come in?
It's available in UK Double, King and Super King, priced from £480 to £700. There's no Single or Small Double option, so it's aimed at larger beds. Delivery is within 48 hours on weekdays, excluding Bank Holidays, and it arrives rolled.
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