Silentnight British Wool 1600 Pocket Mattress
Mattress
Silentnight British Wool 1600 Pocket Mattress
Size
Firmness
Construction
Depth (cm)
29
Layers
4
Layer Details
- Tencel™ Lyocell sleep surface. A silky, soft-touch material woven to allow airflow, which means moisture is moved away from you rather than trapped at the surface. You should feel drier through the night as a result.
- British Wool Comfort Layer. Flexible, breathable wool from Cheviot sheep that keeps you cool in the summer and warm in the winter. It's a natural temperature regulator, doing quietly what synthetic layers often struggle with.
- Platinum comfort layer. Silentnight says this is 10x more breathable than memory foam while offering the same pressure relief. In practice that means a cocooning, cushioned feel without the heat build-up foam can bring.
- Mirapocket® springs and mini pocket springs. 600 Mirapocket® springs work alongside 1000 mini pocket springs for additional comfort and increased breathability. Pocket springs move independently, which means less disturbance when a partner shifts position.
Layer details from silentnight.co.uk product page, September 2026.
- 90cm of width each: Two people sharing get 90cm each, which means a partner who tosses and turns is simply further away from you all night.
- Pocket springs across a wider bed: The 1600 pocket springs move independently, and at this width their motion isolation matters more: movement on one side barely reaches the other.
- Room for night-time visitors: If children pad through at 3am or the dog treats the bed as routine, a super king means everyone keeps a workable share.
- Wool stays temperate at scale: The British wool layer regulates temperature naturally, useful when three warm bodies rather than two end up under one duvet.
- Fills a large master properly: In a period property or big new build master, a UK king can look undersized against the wall; the super king holds the room.
This size suits you if...
You share every night and want the most sleeping space stocked as standard in the UK, you sleep beside a genuinely restless partner and have learned that distance beats any comfort layer, or your household includes children or pets who regularly join you and your bedroom comfortably clears our suggested 3m x 2.9m minimum.
Consider another size if...
Your room falls short of our suggested 3m x 2.9m minimum, or you sleep alone. We'd recommend the UK king instead: it's 30cm narrower, the same length, and needs a smaller room, at least 2.7m x 2.9m by our guidance.
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How big is the Silentnight British Wool 1600 super king?
It measures 180 x 200cm, which is 6ft x 6ft 6in, and stands 29cm deep. That's the largest size Silentnight makes this mattress in: 30cm wider than the UK king and the same length. Standard UK super king sheets fit, though check the depth against any fitted sheets you already own.
Is the Silentnight British Wool 1600 super king worth it over the UK king?
If you share with a restless partner, or children and pets join you often, yes. The extra 30cm of width gives each of you 90cm, and the pocket springs already limit motion transfer, so the combination makes disturbance genuinely rare. Sleeping alone, or in a smaller room, the UK king makes more sense.
Will the Silentnight British Wool 1600 super king fit in my bedroom?
We suggest a minimum of 3m x 2.9m, with around 3.5m x 3.2m feeling comfortable once you add bedside tables and walking space on both sides. Measure the door swing and any landing turns too. This mattress arrives as a single piece rather than zip and link halves, so the route upstairs matters.
Is this mattress good for couples where one partner is restless?
It's one of the better cases for sizing up. The 600 Mirapocket springs and 1000 mini pocket springs compress independently, so movement doesn't ripple across the bed, and at 180cm wide you're rarely close enough to feel it anyway. Distance plus independent springs does more than any comfort layer can.
Does the super king make sense for families sharing with children?
It's the practical choice. With 90cm per adult there's still usable space when a child squeezes in, and the wool layer helps with the extra warmth of a third body. Yes, super king bedding costs more to replace, but for households where sharing is the norm the space repays it.