Silentnight Healthy Growth Sleepy Eco Mattress
Mattress
Silentnight Healthy Growth Sleepy Eco Mattress
Size
Firmness
Firm
Construction
Depth (cm)
19
Layers
2
Layer Details
- Sleep surface. A lightweight fabric surface with Breathable EcoComfort Fibres, which means air can move through as you sleep so you're less likely to overheat. It's also hypoallergenic and naturally resistant to allergens.
- Support system. A traditional open coil spring system with interconnected springs, which means the whole mattress works as one supportive unit. You get a firm, stable feel rather than the cushioned sink of foam.
Layer details from silentnight.co.uk product page, September 2026.
- Made for children's rooms: At 90cm wide it leaves floor space for a wardrobe, desk and toy storage in a typical child's bedroom, which is usually the real battle.
- Suits bunk and cabin frames: At 19cm deep it sits safely below the guard rail on most bunk beds and mid sleepers, where a thicker adult mattress could not.
- Firm support for growing sleepers: The interconnected open coil springs give steady, even support across the full 90 x 190cm surface, which is what a child's developing back needs.
- Two singles fit where a double won't: Siblings sharing a room can have a UK single each with a walkway between, something a larger bed rarely allows.
- Cheap, easy bedding: Single sheets and a standard single duvet at 135 x 200cm are the most widely stocked and least expensive bedding of any UK size.
- Guest ready without crowding: In a spare room that doubles as an office, the compact footprint leaves space for a desk rather than swallowing the room.
This size suits you if...
You're buying for a child or teenager who needs firm, foam-free support, especially on a bunk, cabin or mid sleeper frame where the 19cm depth is a genuine advantage. It also works if you're kitting out a spare room or a student's first bed and want the standard UK single footprint that fits almost anywhere with at least 2.1m x 2.8m of floor space.
Consider another size if...
You need space for two, or you're an adult who prefers a softer, deeper mattress. This model only comes in a UK single, so couples will need a different mattress rather than a bigger size of this one.
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Will the Silentnight Sleepy Eco UK single fit a bunk bed?
Yes, and it's one of the better matches for one. At 90 x 190cm it fits standard UK bunk, cabin and mid sleeper frames, and its 19cm depth keeps the sleep surface below the guard rail. Many adult mattresses are too thick for a top bunk, so the slimmer build here is a practical plus rather than a shortcoming.
Is the Silentnight Healthy Growth Sleepy Eco available in a double?
No. The UK single, at 90 x 190cm, is the only size Silentnight makes this mattress in. That reflects who it's designed for: children, teens and single sleepers who need firm support. If you want the same foam-free approach in a double, you'd need to look at a different model.
How much room do I need for a UK single mattress?
We suggest allowing at least 2.1m x 2.8m of floor space, which gives you room to walk alongside the bed and open drawers or a wardrobe. In a shared children's room, two UK singles with a walkway between will often fit where one larger bed plus a second bed would not.
Is a UK single big enough for a teenager?
For most, yes. At 90 x 190cm, or 3ft x 6ft 3in, the UK single is the standard size for teens across the UK, and the firm open coil support here suits a growing back. Taller teenagers should note the 190cm length; the UK single is 10cm shorter than a UK king, so very tall sleepers may eventually want more legroom.
What bedding fits the Sleepy Eco in a UK single?
Standard UK single bedding: single fitted sheets sized for a 90 x 190cm mattress and a single duvet at 135 x 200cm. Because the mattress is 19cm deep, you won't need deep-pocket fitted sheets, and ordinary single sheets are the cheapest and most widely stocked of any UK size.