Jay-Be QUEST Q1 Deep e-Spring Childrens Mattress
Mattress
Jay-Be QUEST Q1 Deep e-Spring Childrens Mattress
Size
Firmness
Medium Firm
Construction
Depth (cm)
16
Layers
4
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.
- Fits the smallest rooms: At 3ft wide, the UK single leaves floor space for a wardrobe, desk and toy storage even in a compact child's bedroom.
- Safe depth for raised frames: The 16cm profile sits comfortably below guard rails on bunks, cabin beds and mid sleepers, where a deeper adult mattress would be a risk.
- Sprung support for growing backs: The interlaced open coil lattice spreads a child's weight evenly, which helps keep a young spine aligned through the night.
- Light enough to handle: The slim build makes lifting it onto a raised frame, or turning it for sheet changes, far easier than wrestling an adult mattress.
- 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 room where the bed shares space with storage and a desk, and you want a sprung mattress rather than an all-foam slab at a sensible price. It also suits raised frames: the slim 16cm depth works on bunks, cabin beds and mid sleepers. If two children share a room, a pair of UK singles leaves a walkway between the beds.
Consider another size if...
You need a mattress for a teenager approaching adult size, or a spare bed adults will use. The QUEST Q1 comes in the UK single only, and owner reviews mention it feels springy under an adult's weight, so choose an adult mattress instead.
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What are the dimensions of the Jay-Be QUEST Q1 in a UK single?
It measures 90 x 190cm, which is 3ft x 6ft 3in. That's the standard UK single, so it fits any standard single frame, and ordinary single fitted sheets go straight on without bunching.
Will the UK single QUEST Q1 fit a bunk bed or mid sleeper?
Yes, and it's a sensible match. The 90 x 190cm footprint is the standard for UK bunks, cabin beds and mid sleepers, and the 16cm depth keeps the sleeping surface safely below the guard rail. Do check your frame's stated maximum mattress depth before buying, as a few models specify a lower limit.
How much floor space does a UK single need?
We suggest allowing at least 2.1m x 2.8m of floor space. That gives room to walk alongside the bed and open drawers or a wardrobe. In a loft conversion, the narrow 90cm width also makes it easier to tuck the bed under the slope where a wider size wouldn't go.
Can two UK singles fit in a shared children's room?
Often, yes. Each bed needs a 90 x 190cm footprint, and we'd suggest keeping a clear walkway between them so both children can get in and out easily. Measure your room against two beds plus that gap; in a smaller room, bunk beds with two QUEST Q1 mattresses use the same floor space as one.
Is the QUEST Q1 UK single suitable for an adult guest bed?
We wouldn't recommend it. It's designed for children, and across verified owner reviews adults describe it as feeling springy under their weight. The 16cm depth is also slimmer than adult mattresses. For a spare room that hosts adults, a standard adult UK single is the better buy.