Jay-Be QUEST Q1 Deep e-Spring Childrens Mattress
The Jay-Be QUEST Q1 Deep is a children's mattress with a medium to firm feel, built around an e-Spring core and traditional open coil springs, which means even weight distribution and steady support for a growing back.
- Helps keep your child's spine aligned
- Medium-firm without feeling harsh
- Breathable cover keeps kids cool
£124
Get the lowest price we've found
At 16cm deep the Jay-Be QUEST Q1 Deep is slimmer than an adult mattress, which is normal for a children's bed and keeps it easy to handle. It's handcrafted in the UK, conforms to BS7177: 2008 for home use, and comes from a National Bed Federation approved brand. With a 5 year guarantee, it sits at the affordable end of the market without feeling like a compromise for a child's room.
Mattress specifications
Firmness
Medium Firm
Type
Open Coil Spring
Depth (cm)
16
Number of Layers
4
Trial Period (nights)
100
Warranty (years)
5
Price Range
£124
Best Sleeping Position(s)
Back Sleeping
Stomach Sleeping
Combination Sleeping
Certifications
BS 7177
Assessed from the specification published by Mattress Online, captured September 2026, and from regular price comparison across our UK retail partners.
Why should you choose this mattress?
The main appeal here is good, 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 an extra charge. Those are the retailer's own terms, so check them wherever you buy.
Key features & layer details
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.
Best suited for?
Children
Made for a child's bed, the interlaced open coil lattice spreads weight evenly, which suits young sleepers who are still growing.
Budget buyers
Sitting at the affordable end of the market, it gives a sprung mattress with a 5 year guarantee, so it feels like good value.
Warm sleepers
The knitted cover helps with airflow and breathability, which means a child who runs hot shouldn't overheat during the night.
Side sleepers
Soft white fibres and a knitted cover sit over the medium firm support, giving a cosy surface that doesn't feel harsh on shoulders and hips.
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.
Save on an earlier or ex-display model
Some retailers still sell the earlier version of this mattress, or ex-display and returned stock at a lower price. These are the sizes where it costs less than the current model's best price.
Jay-Be QUEST Q1 Deep e-Spring Childrens Mattress
Select a comparison article below or choose to compare this mattress side by side with up to 2 other mattresses.
Did you know? On Mattress Unboxed we have over 1,000 different mattresses to suit all types of sleepers. View all mattresses.
FAQ's
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 an affordable 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.
Couldn't find an answer to your question? Send us a message