Silentnight Just Breathe Eco Comfort Hybrid Mattress
Mattress
Silentnight Just Breathe Eco Comfort Hybrid Mattress
Size
Firmness
Firm
Construction
Depth (cm)
24
Layers
3
Layer Details
- Sleep surface. A soft-knit hypoallergenic fabric top, which means a cosy first impression and a sensible choice if dust or allergens bother you.
- Eco Comfort layer. Eco Comfort Fibres and 3D fabric form a breathable comfort layer that helps regulate your temperature through the night. If you're a hot sleeper, this is the part working in your favour.
- Support system. 1000 individually responsive Mirapocket springs with zoned support respond to your movements and support you edge to edge. In practice that means less roll-off at the sides and support matched to different parts of your body.
Layer details from silentnight.co.uk product page, September 2026.
- Fits where space is tight: At 90cm wide it leaves floor clear for a desk, wardrobe and toy storage in a child's room, or two beds plus a walkway where siblings share.
- Sensible for raised frames: At 24cm deep it's shallower than many hybrids, which matters on bunk and mid-sleeper frames, although you should still check it sits below the guard rail.
- Support that grows with a child: The 1000 zoned Mirapocket springs give firmer support where weight concentrates, a feel that suits growing teens better than a soft sink-in surface.
- Cooler in small rooms: The Eco Comfort Fibres and 3D fabric layer move air through the mattress, useful in box rooms and loft conversions that trap heat in summer.
- Edge support on a narrow bed: Zoned springs support you edge to edge, and on a 90cm width that reduced roll-off feeling matters more than it would on a wider mattress.
This size suits you if...
You're buying for a child or teenager who has outgrown a cot or toddler bed, you need a firm-ish mattress for a spare room that doubles as an office, or you sleep alone in a compact room and want hybrid support without giving up floor space. It also suits student rooms and first flats where the frame is provided and the mattress isn't.
Consider another size if...
You share the bed, or you want more stretching room than 90cm of width allows. Silentnight lists this mattress in a UK single only, so a couple would need a different mattress in a UK double or larger.
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What room size do I need for the Just Breathe Eco Comfort Hybrid in a UK single?
We suggest allowing at least 2.1m x 2.8m of floor space for a UK single, which gives you room to walk around the bed and open drawers. That makes it a realistic fit for box rooms, lofts with a narrow usable footprint and children's bedrooms already busy with furniture.
Is the UK single Just Breathe suitable for a bunk or mid-sleeper frame?
Often, yes. At 24cm deep it's slimmer than many hybrids, which helps on raised frames where a thick mattress can sit above the guard rail. Measure your frame's maximum mattress depth before buying, as safety guidance varies between bunk and cabin bed designs.
Is the Silentnight Just Breathe in a UK single a good choice for a child?
It's a reasonable fit. The medium/firm feel gives growing bodies proper support rather than a soft surface to sink into, and the hypoallergenic soft-knit top is a genuine plus for allergy-prone kids. Lightweight side sleepers may find it slightly firm on hips and shoulders, so bear that in mind for smaller children.
Is a UK single long enough for a tall adult?
The UK single is 190cm long, or 6ft 3in. Most adults fit comfortably, but if you're approaching that height you'll have little to spare, and this mattress isn't available in the longer 200cm sizes. Taller sleepers may be better served by a different mattress in a UK king, which is 10cm longer than the UK single.
Does the Just Breathe Eco Comfort Hybrid come in sizes bigger than a single?
Not at the moment. Silentnight lists this mattress in a UK single only, so there's no route to a UK double or UK king within this model. If the single suits you, compare the retailers listed on this page; the prices shown here update as retailers change them.