Silentnight Healthy Growth Solar Eco Waterproof Mattress
Mattress
Silentnight Healthy Growth Solar Eco Waterproof Mattress
Size
Firmness
Medium
Construction
Depth (cm)
19
Layers
3
Layer Details
- Sleep surface. Double sided, with a waterproof surface on one side and a sumptuous quilted surface on the other. You can choose the side that suits your child's stage, which is a practical touch.
- Comfort layer. Breathable EcoComfort Fibres™ with an airflow border, which means air can move through the mattress rather than getting trapped. That helps keep a warm sleeper a little cooler.
- Support system. Medium-firm Bonnel open-coil springs offering even weight distribution and support. Open coils give a slightly springier, more traditional feel than pocket springs.
Layer details from silentnight.co.uk product page, September 2026.
- Made for the size it comes in: This is a children's mattress in the standard children's size, so it matches the UK single frames, bunks and mid sleepers most kids' beds already use.
- Slim enough for raised frames: At 19cm deep it sits comfortably below the guard rails of most bunk and cabin beds, where a thicker adult mattress could leave the rail too low.
- Leaves the room to the child: At 3ft wide, the UK single keeps floor space free for a desk, wardrobe and toy storage in a typical child's bedroom.
- Flippable through the stages: The waterproof side handles the accident-prone years, then you turn it to the quilted side as your child grows, all within the same UK single footprint.
- Cheap, easy bedding: Standard single sheets and a 135 x 200cm single duvet fit, and both are the most widely stocked bedding of any UK size.
This size suits you if...
You're buying for a child's bed, a bunk or mid sleeper, or a teenager moving up from a cot or toddler bed, and you want a waterproof, foam-free option in the standard UK single size. It also suits a room where two single beds share the space with a walkway between them, since the 90cm width keeps each bed compact.
Consider another size if...
You need a mattress for an adult, or anything wider than a UK single, as this model comes in one size only. Its 19cm depth and open-coil feel are designed for lighter, growing bodies rather than grown-up sleepers.
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Will the Silentnight Healthy Growth UK single fit a bunk bed?
Yes, in most cases. The UK single is the standard bunk and mid sleeper size at 90 x 190cm, and at 19cm deep this mattress should sit below the guard rail on most raised frames. Check your frame's maximum mattress depth before buying, as some bunks specify a lower limit.
What are the dimensions of the Silentnight Healthy Growth mattress?
It comes in one size, the UK single, measuring 90 x 190cm, or 3ft x 6ft 3in. That's the standard UK one-person size, so it fits standard single bed frames, divans, bunks and mid sleepers without any adjustment.
How much room do you need for this mattress in a UK single?
We suggest allowing at least 2.1m x 2.8m of floor space. In practice the UK single fits almost any bedroom, including box rooms and loft conversions where the bed has to tuck under a slope, and it leaves space for a desk and wardrobe in a typical child's room.
Can two of these singles fit in one shared bedroom?
Often, yes. Two UK singles at 90cm wide each, plus a walkway between them, will fit in most reasonably sized shared rooms, which makes this a workable choice for siblings. Measure your room against two beds and a gap you're happy with before ordering the second.
Where can I buy the Silentnight Healthy Growth in a UK single?
Stock and prices change regularly, so the most reliable route is to compare the retailers listed on this page. The prices shown here are updated as retailers change them, which saves checking each shop individually for the UK single.