Silentnight Healthy Growth Sleepy Eco Comfort Kids Single Mattress
The Silentnight Healthy Growth Sleepy Eco Comfort is a kids mattress built around a traditional open coil spring system with a breathable EcoComfort Fibres™ comfort layer, which means your child gets steady, firm support with a surface designed to sleep a little cooler.
- Stable, evenly firm surface
- Foam-free & resists allergens
- 60-night trial & 5-year guarantee
£189
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Silentnight Healthy Growth Sleepy Eco Comfort Kids Mattress
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Mattress details
Mattress
Silentnight Healthy Growth Sleepy Eco Comfort Kids Mattress
Size
Firmness
Firm
Construction
Open Coil Spring
Eco-Friendly
Depth (cm)
19
Layers
3
Layer Details
Sleep surface
The mattress is encased in a lightweight fabric surface. It keeps the top of the bed simple and easy-going against skin.
Comfort layer
Breathable EcoComfort Fibres™ sit beneath the surface, which means better airflow and a cooler feel through the night. That matters for children, who often run warm while they sleep.
Support system
An open coil traditional spring system with interconnected springs provides the support. The linked springs move together, giving a consistently firm, stable feel across the whole mattress.
Layer details from silentnight.co.uk product page, September 2026.
Key benefits
- Fits the room children actually have: At 90cm wide, it leaves floor space free for a desk, wardrobe and toy storage in a compact child's bedroom.
- Slim enough for raised frames: The 19cm depth suits bunk beds, cabin beds and mid sleepers, where a deeper mattress can sit above the guard rail.
- Firm support for restless sleepers: The interconnected open coil springs give an evenly firm surface across the full 90 x 190cm, so a child who moves around stays supported edge to edge.
- Cooler surface for warm sleepers: The breathable EcoComfort Fibres™ layer helps airflow, which matters for children, who often run warm at night.
- Cheap, easy bedding: Standard single sheets and duvets are the most widely stocked and least expensive of any UK size.
This size suits you if...
You're buying a first proper mattress for a child moving out of a cot bed, you need something slim and firm for a bunk or mid sleeper frame, or you're kitting out two children sharing a room where a pair of 90cm-wide beds still leaves a walkway between them.
Consider another size if...
You're shopping for an adult, a teenager who has outgrown a single, or anyone wanting a softer, sink-in feel. This mattress comes in a UK single only, so a larger sleeper will need a different mattress altogether.
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FAQ's
What are the dimensions of the Silentnight Sleepy Eco Comfort UK single?
It measures 90 x 190cm, which is 3ft x 6ft 3in, the standard UK single footprint. That means it fits any standard single frame, and ordinary single fitted sheets and a single duvet work with it. At 19cm deep it's slimmer than many adult mattresses, so deep-pocket sheets aren't needed.
Will the Silentnight Sleepy Eco Comfort UK single fit a bunk bed or mid sleeper?
Yes, in most cases. Its 90 x 190cm footprint matches standard UK bunk, cabin and mid sleeper frames, and the 19cm depth is slim enough that the guard rail on most raised frames still does its job. Check your frame's maximum mattress depth before buying, as some bunks specify a lower limit.
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 wardrobe doors. In practice a UK single is the easiest size to place: it works under a loft slope, against a wall, or as one of a pair in a shared room.
Can an adult use the Silentnight Sleepy Eco Comfort UK single?
We wouldn't recommend it. Although 90 x 190cm is the standard adult single size, this mattress is designed for growing children, with a firm open coil system and a 19cm profile aimed at lighter bodies. An adult would likely find it too firm and too shallow for comfortable long-term use.
Is a UK single big enough for a growing child or teenager?
For most of childhood, yes. The 190cm length gives plenty of growing room, and 90cm of width suits one sleeper comfortably. Since this mattress only comes in a UK single, a teenager who wants more space would need to move to a different mattress in a bigger size rather than sizing up within this range.