Jay-Be 1000 e-Pocket TRUECORE Eco-Friendly Small Double Mattress
The Jay-Be 1000 e-Pocket TRUECORE is a 21cm deep pocket spring mattress with 1,000 individual springs and soft e-Fibre comfort fillings, which means you get contouring support without any foam in the comfort layers.
- Minimises partner disturbance
- Breathable fibres reduce heat build-up
- Handcrafted in the UK
£299
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Jay-Be 1000 e-Pocket TRUECORE Eco-Friendly Mattress
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Mattress details
Mattress
Jay-Be 1000 e-Pocket TRUECORE Eco-Friendly Mattress
Size
Firmness
Medium Firm
Construction
Pocket Spring
Eco-Friendly
Depth (cm)
21
Layers
4
Layer Details
Knitted cover
A soft knitted cover that adds a cosy, slightly warm surface feel. The knit structure is designed to let air pass through, which helps the mattress breathe overnight.
Soft White Fibres
Soft synthetic e-Fibre fillings that give the top of the mattress its cushioned feel. They're designed to be resilient, holding their shape rather than flattening quickly.
3D spacer
A spacer layer that improves airflow through the mattress. In practice, that means less heat building up around you as you sleep.
Pocket Springs
Springs sit in individual cloth pockets, so each one responds to your body independently. That gives more tailored support along your spine and reduces the ripple effect when someone else moves.
Layer details from mattressonline.co.uk product page, September 2026.
Key benefits
- Real room to spread out: The UK small double is 30cm wider than the UK single, which means a solo sleeper can actually roll over without meeting the edge.
- Fits where a double won't: At 15cm narrower than the UK double, it can be the difference between a door that clears the bed frame and one that doesn't.
- Springs that work at this width: Each of the 1,000 springs sits in its own pocket, so support follows your body rather than tipping you towards the middle of a narrower bed.
- Breathable in a small room: Compact bedrooms hold heat, and the no-foam fibre fillings and 3D spacer layer let air move through rather than trapping warmth around you.
- Standard 4ft sizing: The small double is an established UK size, so frames, fitted sheets and protectors are easy to find on the high street.
This size suits you if...
You're a solo sleeper who has outgrown a single and wants proper stretching room, your bedroom, box room or loft conversion can't spare the width a full double demands, or you're furnishing a guest room where couples stay for a night or two rather than every night. Allow at least 2.4m x 2.8m of floor space and this size sits comfortably.
Consider another size if...
You share the bed every night, because 120cm is a squeeze for two adults long term. We'd recommend the UK double instead, which is 15cm wider and the same length; allow at least 2.6m x 2.8m for it.
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FAQ's
Is the Jay-Be 1000 e-Pocket small double big enough for a couple?
For occasional nights, yes. Couples can share a small double comfortably enough for a weekend stay, and the pocket springs help by absorbing movement so one person turning over disturbs the other less. For nightly sharing, though, 120cm of width gets tight, and the UK double at 135cm wide is the more livable choice.
What room size do I need for a UK small double mattress?
We suggest allowing at least 2.4m x 2.8m of floor space. That gives you room to open the door fully, walk around the bed and fit a bedside table without shuffling sideways. It's our own guidance rather than Jay-Be's, but it's a sensible starting point before you order.
How much bigger is the small double than the single Jay-Be 1000 e-Pocket?
The UK small double is 30cm wider than the UK single, and the two are exactly the same length at 190cm. In practice that extra width turns a bed you fit into a bed you can spread out in, which is why it suits teenagers and solo adults who have outgrown a single.
Is the small double a good size for a guest room?
It's one of the better ones. A small double gives a solo guest generous space and lets a visiting couple share for a night or two, while leaving more floor free than a full double would. The Jay-Be's hypoallergenic fibre fillings are a quiet bonus for guests with dust sensitivities.
Where can I buy the Jay-Be 1000 e-Pocket in a UK small double?
Compare the retailers listed on this page. The prices shown here are updated as retailers change them, so it's worth checking back before you commit, and remember the small double is a standard 4ft UK size, so frames and bedding are easy to source separately.