Silentnight British Wool 2400 Mattress
Mattress
Silentnight British Wool 2400 Mattress
Size
Firmness
Medium
Construction
Depth (cm)
29
Layers
4
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.
- Fits compact rooms: At 3ft wide, this single leaves floor space free in a child's room already competing with a desk and wardrobe, or under the slope of a loft conversion.
- Breathable for warm sleepers: The wool layer and Tencel™ Lyocell surface regulate temperature naturally, which matters in small bedrooms where heat builds up quickly overnight.
- Supportive for growing sleepers: The medium feel and 1400 Mirapocket® springs give teenagers proper spinal support rather than the soft foam feel cheaper children's mattresses rely on.
- Check raised frames first: At 29cm deep this is a substantial mattress, so measure guard rail height before pairing it with a bunk, cabin or mid sleeper frame.
- Easy, cheap bedding: Standard single sheets and a 135 x 200cm duvet fit, and both are the most widely stocked and affordable bedding of any UK size.
This size suits you if...
You're buying for one person: a child ready for a proper mattress, a teenager who has outgrown a budget one, or a spare room that hosts guests a few times a year. It also suits solo adults in student rooms or first flats where the frame came with the room, and anyone whose bedroom simply hasn't the floor space for anything wider.
Consider another size if...
You're an adult who shares the bed, or a restless solo sleeper who wants space to spread out. We'd recommend the UK double instead, which is 45cm wider and the same length; allow at least 2.6m x 2.8m for it.
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What are the dimensions of the Silentnight British Wool 2400 UK single?
The UK single measures 90 x 190cm, or 3ft x 6ft 3in. We suggest allowing at least 2.1m x 2.8m of floor space so you can walk around the bed and open drawers comfortably. That modest footprint is why it works in box rooms, lofts and shared children's bedrooms where two beds need a walkway between them.
Will the Silentnight British Wool 2400 single fit a bunk or mid sleeper?
The width is right, since bunk and mid sleeper frames take a standard UK single. The catch is depth: at 29cm this is a tall mattress, and many raised frames specify a maximum so the guard rail still does its job. Measure from the base to the top of the rail before you order.
Is the UK single Silentnight British Wool 2400 good for a child or teenager?
Yes, with one caveat. The medium feel and pocket spring support suit growing bodies well, and the foam-free, breathable build helps children who run hot at night. Lightweight side sleepers may find it slightly firm at the shoulder, so a very slight child might prefer something softer. For teenagers it's a strong long-term choice.
Should I buy the Silentnight British Wool 2400 in a UK single or a UK double?
The UK single is 45cm narrower than the UK double, and both are the same length. For one child, teen or occasional guest, the UK single is plenty and saves floor space. If an adult will sleep on it every night, or a couple ever will, the UK double is the better buy; allow at least 2.6m x 2.8m for it.
Is this single a good choice for a spare room?
It suits guest rooms well. The medium feel is a safe middle ground for visitors with different preferences, and the compact footprint leaves space for a desk if the room doubles as an office. It's a premium build for occasional use, but guests get a genuinely comfortable night rather than a token bed.