Silentnight British Wool 2200 Mattress
Mattress
Silentnight British Wool 2200 Mattress
Size
Firmness
Medium
Construction
Depth (cm)
29
Layers
4
Layer Details
- Tencel™ Lyocell sleep surface. A silky, soft-touch sleep surface woven to allow airflow and move moisture away from you as you sleep. In practice, that means a drier, fresher feel through the night.
- Platinum comfort layer. Silentnight describes this as 10x more breathable than memory foam with the same amount of pressure relief. You get that cocooning, cushioned feel without the heat build-up memory foam is known for.
- British Wool Comfort Layer. Wool from Cheviot sheep, chosen because it's flexible and breathable. It helps regulate temperature in both directions, keeping you cool in summer and warm in winter.
- Springs. 1200 Mirapocket® springs adjust to your movements throughout the night, so support follows you as you change position. A further 1000 mini pocket springs sit alongside them for additional comfort and increased breathability.
- Natural flame retardants. The mattress is foam free in its construction claims and uses natural flame retardants rather than chemical treatments. A reassuring detail if you're trying to keep synthetic materials to a minimum.
Layer details from silentnight.co.uk product page, September 2026.
- 90cm of width each: Two people sharing get 90cm apiece, which means a restless partner's tossing happens far enough away that the 2200 pocket springs rarely need to absorb it.
- Space when children wander in: At 180cm wide there's room for a small visitor at 3am without anyone ending up clinging to the edge.
- Springs that keep movement local: The 1200 Mirapocket® springs adjust independently to each sleeper, so across this much width one side barely registers the other.
- Cool across a big surface: The Tencel™ Lyocell surface and British wool layer regulate temperature, useful when two adults, and sometimes a dog, share one mattress every night.
- Fills a large master properly: In a big period bedroom or a generous new build master, a UK king can look undersized; the 180 x 200cm footprint sits in proportion.
This size suits you if...
You share the bed every night and want the most sleeping space a standard UK size offers, one of you is a genuinely restless sleeper, or your household includes children or a large dog who treat your bed as partly theirs. It also suits you if you have a large master bedroom, we'd allow at least 3m x 2.9m, that a smaller mattress would leave looking sparse.
Consider another size if...
Your bedroom is smaller than the 3m x 2.9m we suggest for a UK super king, or you sleep alone and don't need this much width. This mattress isn't sold in any other size, so you'd need a different model entirely.
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What are the dimensions of the Silentnight British Wool 2200 super king?
It measures 180 x 200cm, which is 6ft x 6ft 6in. That's the standard UK super king footprint: 30cm wider than a UK king and the same length. At 29cm deep, it's a substantial mattress, so check your bed frame and fitted sheets can handle both the footprint and the depth.
Does the Silentnight British Wool 2200 come in other sizes?
As far as we can see, no. The UK super king is the only size listed for this mattress. If your room or frame needs a UK king or smaller, you'd have to choose a different model, so measure your space carefully before you fall for this one.
How much space does each person get on a super king mattress?
90cm each for two people sharing, the same width as a full UK single apiece. Combined with the 1200 Mirapocket® springs, which respond to each sleeper independently, that means a partner who shifts position through the night is both far away and well cushioned from you.
Is the Silentnight British Wool 2200 super king a good choice for families?
The width helps. When a child wanders in during the night, 180cm means everyone still gets a reasonable share, and the wool and Tencel™ Lyocell layers keep the surface from getting clammy with extra bodies aboard. The medium feel suits most sleepers, although lightweight side sleepers may find it slightly firm.
What room size do I need for the Silentnight British Wool 2200 in a UK super king?
We suggest at least 3m x 2.9m, with around 3.5m x 3.2m feeling more comfortable once you add bedside tables and walking space on both sides. Before ordering, check your door swing and any landing turns too; a 180 x 200cm mattress is an awkward thing to carry upstairs.