Jay-Be 1000 e-Pocket TRUECORE Eco-Friendly Mattress
Mattress
Jay-Be 1000 e-Pocket TRUECORE Eco-Friendly Mattress
Size
Firmness
Medium Firm
Construction
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.
- Fits compact rooms: At 90cm wide it leaves floor space for a desk, wardrobe and toy storage in a child's bedroom, which is where this size usually ends up.
- Suits raised frames: The 21cm depth sits comfortably within the safety limits of most bunk beds, cabin beds and mid sleepers, so check your frame's marked maximum and you should be fine.
- Grows with a child: Medium firm pocket spring support with no foam layers is a sensible choice for a teenager, giving proper spinal support rather than a soft surface they sink into.
- Breathes overnight: The all-fibre fillings and knitted cover keep air moving, which matters in a small room or a bunk where heat can build up.
- Easy bedding to buy: Standard single sheets and a single duvet fit, the cheapest and most widely stocked bedding of any UK size.
This size suits you if...
You're buying for a child or teenager, kitting out a spare room or student flat where the frame is already provided, or you sleep alone in a room where every centimetre of floor space counts. It also suits a bunk or mid sleeper, where a slimmer, supportive mattress is safer and easier to make up than a deep one.
Consider another size if...
You're an adult who spreads out in your sleep, or you share the bed even occasionally. The UK single is 45cm narrower than the UK double, so we'd recommend the UK double instead if you can allow at least 2.6m x 2.8m of floor space.
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Will the Jay-Be 1000 e-Pocket UK single fit a bunk bed?
In most cases, yes. At 90 x 190cm it matches the standard UK single frame size used by bunks, cabin beds and mid sleepers, and its 21cm depth sits within the safety rail limits most raised frames specify. Check the maximum mattress depth marked on your frame before buying, as limits vary between models.
Is the Jay-Be 1000 e-Pocket UK single good for a child or teenager?
It's a strong fit. The medium firm pocket spring build supports a growing spine rather than letting it sink, the fillings are hypoallergenic, which helps with dust sensitivities, and the breathable fibre layers suit warm sleepers. The 90cm width also leaves room in a child's bedroom for a desk and storage.
What room size do I need for a UK single mattress?
We suggest at least 2.1m x 2.8m of floor space for a UK single, which allows a walkway and space to make the bed. That makes it a practical choice for box rooms, loft conversions with a narrow usable footprint, and spare rooms that double as an office.
Is a UK single big enough for an adult?
For one average-sized adult, yes, though at 3ft x 6ft 3in it's snug if you move around a lot in your sleep. Taller sleepers should note the UK single is 10cm shorter than the UK king. For everyday adult use with more space, the UK double is 45cm wider at the same length.
Can I put two Jay-Be single mattresses in a shared or guest room?
Yes, and it's often the more flexible option: two UK singles suit siblings sharing a room or guests who aren't a couple, where one larger bed wouldn't. Each mattress is 90cm wide, so measure to confirm you can fit both plus a walkway between them. Compare the retailers listed on this page for current pricing.