Firmness
Medium Firm
Type
Pocket Spring
Depth (cm)
16
Number of Layers
3
Trial Period (nights)
100
Warranty (years)
5
Price Range
£155
Best Sleeping Position(s)
Certifications
Assessed from the specification published by Mattress Online, captured September 2026, and from regular price comparison across our UK retail partners.
Bunk beds need shallower mattresses than standard beds, and at 16cm this one is built for the job rather than adapted to it. You still get proper pocket springs, which many children's mattresses at this price skip in favour of basic foam, so your child gets genuine adaptive support rather than something that just fills the frame. The recycled e-Fibre base is a quiet bonus if sustainability matters to you. Mattress Online, currently the only retailer selling it, lists a 100-night trial and a 5-year guarantee, which is reassuring cover on a £155 purchase. Yes, it's a simple three-layer build, but for a child's bunk that simplicity is arguably the point.
Key Features & what's inside
- Comfort Layer. Soft White Fibre fillings sit at the top of the mattress, which means a cosy, gently cushioned surface for your child to settle onto. It's a simple comfort layer rather than a deep plush one, in keeping with the mattress's slim bunk-friendly depth.
- Support System. The e-Pocket core uses individual springs encased in cloth pockets, which means each spring adapts to movement independently and support follows your child's body. That's a step up from the open-coil or all-foam cores common in budget children's mattresses.
- Base. A high density e-Fibre base underpins the springs and delivers full body support. It's made from approximately 65% recycled plastic bottles, so the foundation of the mattress is doing some environmental good too.
Layer details from mattressonline.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 as a main mattress for a heavier teenager. At 16cm deep it will feel slim on a standard bed frame, and if your child prefers a noticeably soft, sink-in feel, the medium support here may seem a little firm to them.
Jay-Be Sleep Smart e-Pocket Childrens Bunk Mattress
View all mattresses
How deep is the Jay-Be e-Pocket bunk mattress?
It's 16cm deep. That slim profile is deliberate: bunk beds have safety rails that only work if the mattress sits low enough, and many standard mattresses are too tall. This one is designed with that constraint in mind.
Is the Jay-Be Sleep Smart e-Pocket firm or medium?
Jay-Be describes it as medium. That's a sensible middle ground for children, offering enough support for growing bodies without feeling hard, although a child used to a very soft surface may find it slightly firmer than expected at first.
Does the Jay-Be e-Pocket bunk mattress come with a trial?
Mattress Online, the retailer listing this mattress, offers a 100-night trial and lists a 5 year guarantee. These are the retailer's own terms rather than a manufacturer promise, so check the conditions at the point of purchase.
Is the Jay-Be e-Pocket mattress safe for children?
It conforms to BS7177: 2008 fire resistance standards, is hypoallergenic, and Jay-Be is a National Bed Federation Approved Brand. Its 16cm depth also suits bunk beds, where a slimmer mattress keeps safety rails at an effective height.
What sizes does the Jay-Be e-Pocket bunk mattress come in?
It's available in UK Single only, which fits standard bunk bed frames. Pricing starts from £155, and it's handcrafted in the UK.
Couldn't find an answer to your question? Send us a message