Firmness
Type
Open Coil Spring
Depth (cm)
Number of Layers
4
Trial Period (nights)
Warranty (years)
5
Price Range
£189 to £285
Best Sleeping Position(s)
Certifications
Assessed from JAY-BE's published specification for this mattress, captured September 2026, and from regular price comparison across our UK retail partners.
Two things set this mattress apart for parents. First, it's completely foam-free, using e-Fibre comfort layers instead, and the fabric is OEKO-TEX certified, which offers reassurance about what your child is sleeping on. Second, the waterproof fabric handles the realities of childhood: bedwetting, spilt drinks and general mess, without the mattress underneath suffering. Breathability hasn't been sacrificed for waterproofing either. The open-cell fibres wick moisture and a 3D mesh border vent increases airflow, so it shouldn't sleep sweaty. The medium firmness spring core gives even support that suits growing bodies. Add the 5-year guarantee and a starting price of £189, and it's a well-judged package for a kids' room.
Key Features & what's inside
- Waterproof fabric. A waterproof outer fabric with anti-bacterial, anti-microbial and anti-fungal protection, which means spills and accidents stay on the surface rather than reaching the layers below. That makes it far easier to keep hygienic through the messier years.
- Comfort layers. Entirely foam-free, using breathable e-Fibre comfort layers with open-cell fibres that help wick away moisture. In practice, that means a cooler, fresher sleeping surface for your child.
- Spring core. A medium firmness spring core that provides evenly distributed support across the mattress. This is a sensible feel for growing children, neither too soft nor too hard.
- 3D Mesh border. A 3D mesh border vent around the side of the mattress increases airflow. Combined with the breathable comfort layers, it helps the mattress stay ventilated.
Layer details from jaybe.com product page, September 2026.
Who's it NOT for?
This is a children's mattress, so it isn't the right pick for adults or heavier teenagers wanting a long-term bed. If your child strongly prefers a very soft or very firm feel, the medium spring core may not suit. And with only one retailer stocking it, you'll have little room to shop around on price.
Jay Be Simply Kids Waterproof Anti-Microbial Foam Free Sprung Mattress
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Is the Jay Be Simply Kids mattress waterproof?
Yes. The outer fabric is waterproof and also carries anti-bacterial, anti-microbial and anti-fungal protection, so accidents and spills can be dealt with on the surface rather than soaking into the comfort layers below.
Does the Jay Be Simply Kids mattress contain foam?
No, it's 100% foam-free. Instead of foam, it uses breathable e-Fibre comfort layers with open-cell fibres that help wick away moisture, sitting over a medium firmness spring core.
How firm is the Jay Be Simply Kids mattress?
Jay Be describes it as medium firmness. The spring core provides evenly distributed support, a middle-ground feel that suits most children, although a child who prefers a noticeably softer or firmer surface may want to try before buying.
What sizes does the Jay Be Simply Kids mattress come in?
It's available in UK Single, UK Small Double and EU Single, with prices ranging from £189 to £285 depending on the size you choose.
Does the Jay Be Simply Kids mattress have a guarantee?
Yes, it comes with a 5-year guarantee from Jay Be. It also arrives vacuum packed, which Jay Be says keeps it fresh and reduces the delivery size.
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