Silentnight Comfort Breathe 1200 Mattress
Mattress
Silentnight Comfort Breathe 1200 Mattress
Size
Firmness
Construction
Depth (cm)
25
Layers
5
Layer Details
- Sleep surface. A naturally hypoallergenic fabric surface that's soft against the skin. A sensible choice if allergies or sensitive skin are a concern.
- Comfort Breathe®. Silentnight says these fibres are 15x more breathable than standard memory foam, promoting airflow and regulating temperature. In practice, that means less overnight heat build-up, which hot sleepers will appreciate.
- 1200 Mirapocket spring unit. 1200 pocket springs respond individually to your body's movements, which means support where you need it rather than a one-size-fits-all push-back. The zoning is designed to aid spinal alignment, helpful if back or neck pain is part of your mornings.
- Protective Layer. This layer spreads pressure from the spring unit across the mattress, which means less localised wear over time. It's there for longevity rather than feel.
- Durable case. A soft but hard-wearing outer case designed to keep the mattress comfortable for years. Unglamorous, but it matters for how the mattress ages.
Layer details from silentnight.co.uk product page, September 2026.
- Fits where space is tight: At 90cm wide, this size leaves room for a desk, wardrobe and floor space in a child's bedroom or a boxy spare room.
- Breathability matters more for teens: The Comfort Breathe fibre layer promotes airflow rather than trapping heat, which suits teenagers who run warm and rooms that stay stuffy in summer.
- Support that grows with a child: The 1200 Mirapocket springs respond to whoever is on them, so the medium/firm feel works from later childhood through the teenage years without needing replacing.
- Guest-ready without fuss: In a spare room that doubles as an office, a UK single keeps the bed from dominating the space while still giving guests proper pocket sprung support.
- Cheap, easy bedding: Standard single sheets and a 135 x 200cm single 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 a child or teenager and want a mattress that will still support them in five years, you need a proper bed for a spare room without giving up the desk that shares it, or you're a single adult in a compact room, a student let or a first flat where 90cm of width is all the floor plan allows.
Consider another size if...
You're an adult who shares the bed regularly, or you simply stretch out in your sleep and keep meeting the edge. We'd recommend the UK double instead, which is 45cm wider and the same length; allow at least 2.6m x 2.8m of floor space for it.
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Will the Silentnight Comfort Breathe 1200 UK single fit a bunk bed?
The 90 x 190cm footprint matches standard UK bunk, cabin and mid-sleeper frames, so width and length are fine. The one thing to check is depth: at 25cm this is deeper than some mattresses made specifically for bunks, and safety guidance says the mattress top must sit below the guard rail. Measure your frame's maximum depth before buying.
Is the Comfort Breathe 1200 single big enough for an adult?
For one adult, yes. At 3ft x 6ft 3in it's the standard UK one-person size, and the 1200 pocket springs give full adult-level support. Taller sleepers should note the UK king and UK super king are 10cm longer, though neither suits a small room. If you spread out or share occasionally, the UK single will feel restrictive.
What room size do I need for a single mattress?
We suggest at least 2.1m x 2.8m of floor space for a UK single, which leaves room to walk round the bed and open a wardrobe. That makes it a realistic fit for box rooms, loft conversions with a narrow usable footprint, and children's bedrooms where the bed competes with a desk and toy storage.
Is the Silentnight Comfort Breathe 1200 single a good choice for a child?
It's a reasonable step up once a child has outgrown a cot or toddler bed. The medium/firm feel and zoned pocket springs support a growing spine, and the hypoallergenic sleep surface helps if allergies are a concern. The springier fibre comfort layer also avoids the deep sink of memory foam, which younger children don't need.
Where can I buy the Comfort Breathe 1200 in a UK single?
Availability varies by size, so the simplest route is the live price table on this page, which is updated as retailers change their prices and stock. Compare the retailers listed here rather than the model's main page, since a deal on the UK double won't necessarily apply to the UK single.