Silentnight Healthy Growth Sleepy Eco 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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The Silentnight Healthy Growth Sleepy Eco pairs an open coil spring support system, meaning interconnected springs that give steady, even support, with a breathable sleep surface using EcoComfort Fibres for cooler sleep. It's foam free and FR chemical treatment free, and hypoallergenic, which makes it a sensible pick for a child's bed or an allergy-prone sleeper. At 19cm deep it's slimmer than many adult mattresses, so it suits bunk beds and cabin frames well. Silentnight backs it with a 60-night trial and a 5 year guarantee.
Mattress specifications
Firmness
Firm
Type
Eco-Friendly Mattress
Depth (cm)
19
Number of Layers
2
Trial Period (nights)
60
Warranty (years)
5
Price Range
£199
Best Sleeping Position(s)
Back Sleeping
Stomach Sleeping
Certifications
Assessed from Silentnight's published specification for this mattress, captured September 2026, and from regular price comparison across our UK retail partners.
Why should you choose this mattress?
Choose this one if you want a simple firm mattress without foam or chemical fire retardant treatments. The open coil springs are interconnected, which means a stable, supportive feel across the whole surface rather than pinpoint contouring. The EcoComfort Fibres in the sleep surface are breathable, so a warm sleeper should stay a little cooler through the night. It's genuinely affordable, and the 60-night trial gives you time to be sure. Yes, it's a basic construction, but for a growing child who needs firm support, basic done well is often exactly right.
Key features & 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.
Best suited for?
Children
The firm, interconnected open coil springs give steady, even support across the whole surface, which suits a growing child who needs a stable place to sleep.
Bunk beds
At 19cm deep it is slimmer than many adult mattresses, which means it sits comfortably in bunk beds and cabin frames without poking above the rails.
Allergy sufferers
A hypoallergenic, naturally allergen resistant sleep surface that is also foam free and FR chemical treatment free, which makes it a sensible choice for allergy-prone sleepers.
Warm sleepers
Breathable EcoComfort Fibres let air move through the sleep surface, which means you should stay a little cooler through the night.
Budget buyers
The copy calls it genuinely affordable, and the 60-night trial gives you plenty of time to be sure a simple firm mattress suits you.
It's only available as a UK Single, so couples and anyone wanting a double are out. Adults who prefer a softer, contouring feel may find the firm open coil support a little unforgiving, and at 19cm deep it will feel shallower than a typical adult mattress.
Save on an earlier or ex-display model
Some retailers still sell the earlier version of this mattress, or ex-display and returned stock at a lower price. These are the sizes where it costs less than the current model's best price.
Silentnight Healthy Growth Sleepy Eco Mattress
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FAQ's
Is the Silentnight Healthy Growth Sleepy Eco mattress firm or soft?
It's firm. Silentnight describes it as firm on its own site, which suits growing children who benefit from steady, even support. Lightweight sleepers who like a softer, more cushioned feel may find it a touch too solid.
Does the Silentnight Sleepy Eco mattress contain foam?
No. Silentnight states it's foam free and free from FR chemical treatments, using EcoComfort Fibres and open coil springs instead. It's also hypoallergenic and naturally resistant to allergens, which is reassuring for sensitive sleepers.
How deep is the Silentnight Healthy Growth Sleepy Eco mattress?
It's 19cm deep. That's slimmer than many adult mattresses, which makes it a practical fit for bunk beds, cabin beds and frames with a safety rail. Standard single fitted sheets should fit without trouble.
Does the Silentnight Sleepy Eco mattress come with a trial and guarantee?
Yes. Silentnight's own site lists a 60-night trial and a 5 year guarantee, with delivery in 14 days. That gives you a couple of months to check the firm feel suits your child before committing.
What sizes does the Silentnight Healthy Growth Sleepy Eco come in?
It's available in one size only, a UK Single. If you need a double or a small double you'll have to look elsewhere in Silentnight's range or beyond.
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