Firmness
Medium Firm
Type
Hybrid
Depth (cm)
15
Number of Layers
3
Trial Period (nights)
60
Warranty (years)
5
Price Range
£197
Best Sleeping Position(s)
Certifications
Assessed from Silentnight's published specification for this mattress, captured September 2026, and from regular price comparison across our UK retail partners.
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 £197 price. The trial and 5-year guarantee from Silentnight give you room to change your mind.
Key Features & what's inside
- 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.
Who's it NOT for?
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.
Silentnight Healthy Growth Eco Waterproof Bunk Mattress
View all mattresses
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.
Couldn't find an answer to your question? Send us a message