Silentnight Healthy Growth Eco Waterproof Bunk Mattress
The Silentnight Healthy Growth Eco Waterproof Bunk Mattress is a medium/firm hybrid designed for children's beds, available in a UK Single.
- Waterproof side, softer reverse
- Even support for a growing body
- 60-night trial & 5-year guarantee
£209
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At 15cm deep, the Silentnight Healthy Growth Eco Waterproof Bunk Mattress is slim enough to sit safely within bunk bed guard rails, which is exactly what you want for a top bunk. It's double sided: a smooth waterproof surface on one side for accident-prone years, and a softer sleep surface on the reverse as your child grows. Silentnight lists a 60-night trial and a 5-year guarantee, which is reassuring at an affordable starting price. It's hypoallergenic and free from foam and FR chemical treatments, a genuine plus if you're cautious about what your child sleeps on.
Mattress specifications
Firmness
Medium Firm
Type
Hybrid
Depth (cm)
15
Number of Layers
3
Trial Period (nights)
60
Warranty (years)
5
Price Range
£209
Best Sleeping Position(s)
Back Sleeping
Stomach Sleeping
Combination 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?
The main appeal is practicality. The waterproof side means spills and accidents wipe clean rather than soaking in, and you can simply flip to the softer reverse when that stage passes. Breathable EcoComfort Fibres™ help keep things cooler, which matters because children often run warm at night. Underneath sits a medium/firm Bonnell open-coil spring system, a traditional interconnected design that gives even, dependable support for a growing body. It's a simple construction, but for a child's bed that's arguably a strength: less to go wrong, easier to keep clean, and a sensible price. The trial and 5-year guarantee from Silentnight give you room to change your mind.
Key features & layer details
Sleep surface
One side is smooth and waterproof, which means spills and night-time accidents wipe away rather than sinking in. Flip it over and there's a softer sleep surface for when your child no longer needs the protection.
Comfort layer
Breathable EcoComfort Fibres™ let air move through the mattress, which means less overheating for a warm sleeper. They're also part of what makes this mattress hypoallergenic.
Support system
A medium/firm Bonnell open-coil spring system with interconnected springs sits at the core. It gives balanced, consistent support across the whole surface, well suited to a growing child.
Layer details from silentnight.co.uk product page, September 2026.
Best suited for?
Bunk beds
At 15cm deep, it sits safely within bunk bed guard rails, which makes it a sensible choice for a top bunk.
Children
Made as a children's bunk mattress, it has a waterproof side for accidents and a softer reverse for when your child grows.
Allergy sufferers
Breathable EcoComfort Fibres™ make it hypoallergenic, and it is free from foam and FR chemical treatments, so there is less to worry about.
Warm sleepers
Breathable EcoComfort Fibres™ let air move through the mattress, which means less overheating for children who tend to run warm at night.
Eco-conscious buyers
Being free from foam and FR chemical treatments, with plant-inspired EcoComfort Fibres™ in the comfort layer, suits anyone cautious about what their child sleeps on.
This is a children's bunk mattress, so it's not the right pick for adults or anyone wanting a plush, contouring feel. At 15cm it's slimmer than a standard mattress, and the interconnected open-coil springs offer less motion isolation than pocket springs, though that matters little in a single bed.
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 Eco Waterproof Bunk Mattress
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FAQ's
Is the Silentnight Healthy Growth bunk mattress waterproof?
Yes, on one side. The mattress is double sided, with a smooth waterproof sleep surface on one face and a softer sleep surface on the reverse, so you can choose the side that suits your child's stage.
How deep is the Silentnight Healthy Growth Eco bunk mattress?
It's 15cm deep. That slimmer profile is deliberate for bunk beds, helping the mattress sit below the guard rail on a top bunk.
How firm is the Silentnight Healthy Growth bunk mattress?
Silentnight describes it as medium/firm. The support comes from a Bonnell open-coil spring system with interconnected springs, giving a balanced, supportive feel for a growing child.
Does the Silentnight Healthy Growth bunk mattress come with a trial or guarantee?
Silentnight lists a 60-night trial and a 5-year guarantee, with delivery in 14 days. That gives you time to see how your child settles on it before committing.
Is the Silentnight Healthy Growth bunk mattress hypoallergenic?
Yes. Silentnight lists it as hypoallergenic and free from foam and FR chemical treatments, which may reassure you if your child has allergies or sensitivities.
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