Silentnight British Wool 2400 Mattress
The Silentnight British Wool 2400 is a pocket spring mattress built around natural materials, with wool from Cheviot sheep and a Tencel™ Lyocell sleep surface.
- Natural wool for hot sleepers
- Foam-free, traceable British wool
- 60-night trial & 5-year guarantee
£598
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The Silentnight British Wool 2400 is foam free and uses natural flame retardants, which means fewer synthetic layers and better breathability than a typical memory foam hybrid. Silentnight describes it as medium/firm, so it suits back and combination sleepers who want a supportive feel, although lightweight side sleepers may find it slightly too firm. It comes with a 60-night trial and a 5-year guarantee. At 29cm deep, it's a substantial mattress, so check your fitted sheets will stretch to it.
Mattress specifications
Firmness
Medium
Type
Pocket Spring
Depth (cm)
29
Number of Layers
4
Trial Period (nights)
60
Warranty (years)
5
Price Range
£598 to £1,239
Best Sleeping Position(s)
Side Sleeping
Back Sleeping
Combination Sleeping
Certifications
British Wool
Assessed from Silentnight's published specification for this mattress, captured September 2026, and from regular price comparison across our UK retail partners.
Why should you choose this mattress?
Choose this one if you sleep hot or want to avoid foam. The wool layer is naturally temperature regulating, keeping you cool in summer and warmer in winter, and the wool is part of a traceable British scheme, which matters if provenance is on your list. Underneath, 1400 Mirapocket® springs adjust to your movements while 1000 mini pocket springs add comfort and airflow. Yes, it's a real spend for a single or double, but you're paying for natural fillings and a proper dual spring system rather than marketing gloss. The 60-night trial gives you time to be sure, and delivery is quoted at 14 days.
Key features & layer details
Tencel™ Lyocell sleep surface
A silky, soft-touch cover woven to allow airflow, which means moisture is drawn away from you as you sleep. It's a small detail that helps if you tend to wake up warm.
Platinum comfort layer
Silentnight says this is 10x more breathable than memory foam with the same pressure relief. In practice, that means a cocooning feel without the heat build-up foam is known for.
British Wool comfort layer
Wool from Cheviot sheep, flexible and breathable, keeping you cool in summer and warm in winter. It's also part of a traceable British wool scheme.
Mirapocket® springs and mini pocket springs
1400 Mirapocket® springs adjust to your movements through the night, so you get support where your body needs it. A further 1000 mini pocket springs sit alongside for extra comfort and breathability.
Layer details from silentnight.co.uk product page, September 2026.
Best suited for?
Warm sleepers
The wool comfort layer and Tencel™ Lyocell cover are both breathable, which means heat and moisture are drawn away so you are less likely to wake up warm.
Back sleepers
The medium/firm feel is supported by 1400 Mirapocket® springs that adjust to your movements, which means steady support under the back through the night.
Combination sleepers
Pocket springs that respond as you move, plus a supportive medium/firm feel, mean changing position through the night should feel easy and well supported.
Eco-conscious buyers
The foam-free build uses natural flame retardants and Cheviot wool from a traceable British scheme, which means fewer synthetic layers and clear provenance.
If you love the slow, sinking feel of memory foam, this foam-free design will feel springier and more responsive than you're used to. Lightweight side sleepers may also find the medium/firm feel a little too solid at the shoulder and hip. And if you need a king or super king, only UK Single and UK Double are listed.
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 British Wool 2400 Mattress
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FAQ's
How firm is the silentnight british wool 2400?
Silentnight rates it medium/firm. That places it on the supportive side, well suited to back sleepers and heavier side sleepers, though lighter side sleepers may find it slightly firm at the pressure points.
Does the silentnight british wool 2400 have a trial?
Yes, Silentnight offers a 60-night trial on this mattress, alongside a 5-year guarantee. Delivery is quoted at 14 days.
Is the silentnight british wool 2400 foam free?
Yes. It's foam free and uses natural flame retardants, with comfort coming from British wool, a breathable Platinum comfort layer and a Tencel™ Lyocell sleep surface instead of foam.
How many springs does the silentnight british wool 2400 have?
It has 2400 springs in total: 1400 Mirapocket® springs that adjust to your movements, plus 1000 mini pocket springs for additional comfort and breathability.
What sizes does the silentnight british wool 2400 come in?
It's available in UK Single and UK Double. The mattress is 29cm deep, so deeper fitted sheets are a sensible buy.
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