Firmness
Medium Firm
Type
Open Coil Spring
Depth (cm)
16
Number of Layers
4
Trial Period (nights)
100
Warranty (years)
5
Price Range
£149
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.
The main appeal here is honest, sensible value. You get a sprung mattress rather than an all-foam slab: the interlaced open coil lattice spreads weight evenly and helps with spinal alignment, which matters for children who are still growing. Soft white fibres and a knitted cover add cosiness on top, so the medium to firm support doesn't feel harsh. Safety credentials are in order, with BS7177: 2008 conformity for home use. If you buy through Mattress Online, they list a 100-night trial and free delivery to most locations, with next day weekday delivery available and old mattress removal for £35. Those are the retailer's own terms, so check them wherever you buy.
Key Features & what's inside
- Knitted cover. A soft knitted finish that adds cosiness and warmth. It also helps with airflow and breathability, so your child shouldn't overheat.
- Soft White Fibres. Soft synthetic fillings that create a cosy feel at the surface. They're durable and resilient, holding their shape over time rather than flattening quickly.
- e-Spring core. A deep e-Spring core that distributes weight evenly across the mattress. This is where most of the support comes from.
- Traditional Open Coil Springs. Interlaced springs joined in a lattice design, which means weight is spread evenly to relieve pressure. That helps keep a child's spine properly aligned through the night.
Layer details from mattressonline.co.uk product page, September 2026.
Who's it NOT for?
This is designed for children, so it's not the right pick for teenagers heading towards adult size or for a spare room where adults might sleep. Owner feedback mentions it feels springy under an adult's weight. At 16cm deep it's also slimmer than adult mattresses, so pair it with a child's bed frame.
Jay-Be QUEST Q1 Deep e-Spring Childrens Mattress
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How firm is the Jay-Be QUEST Q1 mattress?
It's described as medium to firm. In practice that means solid support from the open coil springs and e-Spring core, softened at the surface by soft white fibres and a knitted cover, so it's supportive for a growing back without feeling hard.
Does the Jay-Be QUEST Q1 come with a trial period?
Mattress Online lists a 100-night trial on this mattress. That's the retailer's own offer rather than a Jay-Be guarantee, so if you buy elsewhere, check the returns terms with that retailer before ordering.
What sizes does the Jay-Be QUEST Q1 come in?
It's available in UK Single only, which makes sense for a children's mattress. It's 16cm deep, slimmer than a typical adult mattress, so standard single fitted sheets should still work but may be a little loose.
Is the Jay-Be QUEST Q1 safe for children?
It conforms to BS7177: 2008 for use at home, the British safety standard covering flammability. Jay-Be is a National Bed Federation approved brand and the mattress is handcrafted in the UK, which offers reasonable reassurance for a £149 purchase.
How long is the guarantee on the Jay-Be QUEST Q1?
The Mattress Online listing states a 5 year guarantee. That's a sensible span for a children's mattress, which will likely be outgrown before the guarantee runs out.
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