Silentnight Healthy Growth Sleepy Eco Single Mattress
The Silentnight Healthy Growth Sleepy Eco is a firm, eco-friendly mattress available in a UK Single.
- Firm, stable support across the bed
- No foam or chemical fire retardants
- 60-night trial & 5-year guarantee
£199
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Silentnight Healthy Growth Sleepy Eco Mattress
More available sizes
Mattress details
Mattress
Silentnight Healthy Growth Sleepy Eco Mattress
Size
Firmness
Firm
Construction
Open Coil Spring
Eco-Friendly
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.
Key benefits
- 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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FAQ's
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.