Silentnight Comfort Breathe Plus 2100 Mattress
Mattress
Silentnight Comfort Breathe Plus 2100 Mattress
Size
Firmness
Construction
Depth (cm)
30
Layers
7
Layer Details
- Pillowtop sleep surface. A cushiony pillowtop in a naturally hypoallergenic fabric, which means immediate softness the moment you lie down. It's also a sensible choice if dust or allergens bother you at night.
- Comfort Breathe+. An Airloft comfort layer that Silentnight positions as a cooler, cocooning alternative to traditional foam, claiming 18x more breathability. In practice that means pressure-relieving softness with less heat build-up than a standard foam layer.
- 1500 nano springs. A layer of 1,500 ultra responsive nano springs that contour to your body. Because springs allow air to move where foam can't, this layer also helps the mattress breathe.
- Spring insulator layer. A polyester insulator layer with enhanced breathability, sitting between the comfort layers and the main spring unit. It keeps the layers above from settling into the springs below.
- 600 Mirapocket spring unit. 600 Mirapocket springs sit in individual pockets and respond independently to movement, which means zoned support and better spinal alignment. It also helps limit motion transfer if you share a bed.
- Protective Layer. This layer disperses pressure from the spring unit across the mattress. The aim is a longer usable life rather than any change to how it feels.
- Durable case. A soft, durable outer case designed to keep the mattress comfortable for years. It's the housekeeping layer rather than a comfort feature.
Layer details from silentnight.co.uk product page, September 2026.
- Full spec in a compact footprint: The UK single carries the complete Airloft and 2,100-spring build, so a solo sleeper gets the same breathability as the larger sizes without paying for width they will never use.
- A sensible spare room choice: In a room that doubles as an office, the 90cm width leaves space for a desk and chair while still giving guests a genuinely comfortable bed.
- Cool sleeping for warm kids and teens: Teenagers often run hot at night, and the Airloft layer with nano springs beneath moves air where a foam pillowtop would trap it.
- Check the depth on raised frames: At 30cm deep it is taller than many mattresses sold for bunks and mid sleepers, so measure against the guard rail height before buying for a raised frame.
- 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 one person: a child moving up from a cot bed, a teenager who sleeps warm, or an adult in a compact room or first flat where a wider bed would crowd the floor. It also suits a spare room that spends most of the week as an office, where the 90cm width keeps a walkway clear alongside a desk.
Consider another size if...
You're an adult who spreads out at night, or two of you will ever share it. 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 Comfort Breathe Plus 2100 UK single fit a bunk or mid sleeper frame?
The 90 x 190cm footprint matches standard UK bunk and mid-sleeper frames, but the depth needs checking. This mattress is 30cm deep, which can sit above the guard rail on some raised frames. Measure from the base to the top of the rail and check the frame maker's maximum mattress depth before ordering.
Is the UK single big enough for an adult?
At 90cm wide and 190cm long, it suits most single adults comfortably, and it is the standard one-person size in the UK. Taller sleepers should note the UK king and UK super king run 10cm longer; the UK single works best if you're of average height and sleep alone every night.
What room size do I need for a single Comfort Breathe Plus 2100?
We suggest at least 2.1m x 2.8m of floor space. That leaves room to walk alongside the bed and open drawers or a wardrobe. In a child's room competing with toy storage and a desk, or a loft room where the sloping ceiling limits the usable footprint, the 90cm width is the practical choice.
Can two single Comfort Breathe Plus mattresses work in one guest room?
Yes, and it's a flexible setup for a guest room hosting couples one week and friends the next. Each UK single is 90 x 190cm, so plan for two beds plus a walkway between them. The Mirapocket springs respond independently anyway, so each guest gets zoned support on their own bed.
Is the single cheaper than the larger sizes of this mattress?
Silentnight prices this mattress by size, and the UK single sits at the lower end of the range. Prices change regularly, so compare the retailers listed on this page for the current UK single price rather than relying on a quoted figure.