Silentnight British Wool 2400 Pocket Mattress
Mattress
Silentnight British Wool 2400 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 held against your skin. It is the first thing you feel when you lie down.
- Platinum comfort layer. Silentnight describes this as 10x more breathable than memory foam while offering the same amount of pressure relief. In practice that means a cocooning, cushioned feel without the heat build-up foam can cause.
- British Wool comfort layer. Wool from Cheviot sheep, a flexible and breathable material that helps keep you cool in summer and warm in winter. It also lets the mattress stay foam free with natural flame retardants.
- Mirapocket® springs and mini pocket springs. 1400 Mirapocket® springs adjust to your movements through the night, so support follows you as you change position. A further 1000 mini pocket springs add comfort and increase breathability.
Layer details from silentnight.co.uk product page, September 2026.
- A compact footprint for busy rooms: At 3ft x 6ft 3in, this size leaves floor space free in a child's bedroom that also has to hold a wardrobe, desk and toy storage.
- Wool that suits a warm teenager: The breathable British wool and Tencel™ Lyocell surface move heat and moisture away, useful for teens who run hot in smaller upstairs rooms.
- Medium/firm support for growing sleepers: The 1400 Mirapocket® springs adjust as a restless child or teen changes position, with a medium/firm feel that supports rather than swallows them.
- Sensible for spare rooms: A UK single fits a study that doubles as guest space, and the foam-free fillings mean occasional guests won't wake up overheated.
- Cheap, easy bedding: Single sheets and duvets are the most widely stocked of any size, which keeps running costs down for guest beds and kids' rooms alike.
This size suits you if...
You're buying for one sleeper: a child moving up from a cot bed, a teenager in a room where the bed competes with a desk and wardrobe, or a guest bed in a spare room that spends most of its week as an office. It also suits a first flat or student room where the frame is provided and only the mattress is yours to choose.
Consider another size if...
You're an adult who wants space to stretch, or the bed will regularly sleep two. We'd recommend the UK double instead: it's 45cm wider than the UK single, the same length, and we suggest at least 2.6m x 2.8m of floor space for it.
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How big is the Silentnight British Wool 2400 in a 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, which leaves room to walk around the bed and open drawers. That makes it a comfortable fit in box rooms, lofts with a narrow usable footprint and children's bedrooms.
Will the UK single Silentnight British Wool 2400 fit a bunk or mid sleeper frame?
The 90 x 190cm footprint matches standard UK bunk and mid sleeper frames. The mattress is 29cm deep, though, which is on the taller side for a raised bed. Check the frame's maximum mattress depth and make sure the guard rail still sits well above the sleep surface before you buy.
Is the Silentnight British Wool 2400 single a good choice for a child or teenager?
It's a strong option for older children and teens. The medium/firm feel gives growing backs proper support, and the wool and Tencel™ Lyocell layers breathe well, helpful for teenagers who sleep hot. Lightweight side sleepers may find it slightly firm at first, so it suits kids who sleep on their back or move around.
Should I buy the Silentnight British Wool 2400 in a UK single or a UK double?
Choose the UK single for one sleeper in a compact room. The UK single is 45cm narrower than the UK double, and the two are the same length, so the double buys width rather than legroom. For the UK double we suggest at least 2.6m x 2.8m of floor space, so measure your room first.
Where can I compare prices for the Silentnight British Wool 2400 in a UK single?
Use the price table on this page. The prices shown here are updated as retailers change them, so you're seeing current UK single pricing rather than a figure that may have moved since it was written. Check the size name carefully at checkout, as retailer listings often bundle every size on one page.