Jay-Be Bio Cool Hybrid 2000 e-Pocket Small Double Mattress
The Jay-Be Bio Cool Hybrid 2000 e-Pocket is a medium-feel hybrid, 23cm deep, built around 2000 e-Pocket springs topped with a layer of smaller mini pocket springs and several fibre comfort layers.
- Cooling cover draws heat away
- Minimises partner disturbance
- Fillings made from recycled bottles
£364
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Jay-Be Bio Cool Hybrid 2000 e-Pocket Mattress
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Mattress details
Mattress
Jay-Be Bio Cool Hybrid 2000 e-Pocket Mattress
Size
Firmness
Soft
Construction
Pocket Spring
Hybrid
Eco-Friendly
Depth (cm)
23
Layers
6
Layer Details
Cover
A high-density thermal conductive fabric made from sugarcane yarn, which means excess heat is drawn away from your body as you sleep. The result is a cooler night, particularly useful in warmer months.
Comfort layer
Soft white fibre fillings that create a cosy initial feel. They're durable and resilient, so they should hold their shape rather than flattening quickly.
Comfort layer
Mint-infused, plant-based natural fibres that are highly breathable and antibacterial. They resist bacteria growth and add a natural cooling feeling to the sleep surface.
Comfort layer
Advance e-Fibre filling made from recycled plastic bottles. You get a luxurious layer of comfort with a lower environmental footprint.
Mini Pocket Springs
Small, individually cased springs sitting above the main support unit. They add comfort and soothing pressure relief while cutting down motion transfer between partners.
Support system
2000 e-Pocket springs providing individualised support. Each spring contours to your body shape, moulding to the areas that need it most.
Layer details from mattressonline.co.uk product page, September 2026.
Key benefits
- Real room to stretch out alone: At 30cm wider than the UK single, this size gives one sleeper genuine sprawling space on those contouring e-Pocket springs.
- Fits where a double cannot: The 120cm width is 15cm narrower than a UK double, which can be the difference between a bedroom door clearing the frame or not.
- Cooling matters more in small rooms: Compact bedrooms and lofts run warm, so the thermal conductive sugarcane cover and mint-infused fibres are genuinely useful at this size.
- Handles the occasional shared night: The mini pocket spring layer cuts motion transfer, so a visiting couple can share it comfortably for a weekend.
- Standard 4ft bedding: Small double is a common UK size, so fitted sheets and frames are easy to find, and a standard double duvet works fine.
This size suits you if...
You're a solo adult who has outgrown a single and wants space to spread out without giving the whole room to the bed, your bedroom or loft conversion is too tight for a UK double but you still want a proper grown-up mattress, or you're kitting out a guest room where couples stay occasionally rather than every night.
Consider another size if...
You share the bed every night and your room measures at least 2.6m x 2.8m. In that case we'd recommend the UK double instead: it's 15cm wider, the same length, and far more comfortable for nightly couple use.
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FAQ's
What are the dimensions of the Jay-Be Bio Cool Hybrid in a UK small double?
This size measures 120 x 190cm, which is 4ft x 6ft 3in. It's the same length as a UK single but 30cm wider, so a taller sleeper gets no extra legroom over a single, just considerably more width to move around in.
What room size do I need for a small double Bio Cool Hybrid?
We suggest allowing at least 2.4m x 2.8m. That leaves enough space to walk round the bed and open drawers without squeezing past. In a box room or loft conversion, measure where the sloping ceiling starts, since the usable floor is often smaller than the stated room size.
Should I get the Bio Cool Hybrid in a small double or a double?
It comes down to your room. The UK small double is 15cm narrower than the UK double and the same length. If two of you will sleep on it most nights and the room measures at least 2.6m x 2.8m, take the UK double. Sleeping alone in a tighter space, the UK small double makes more sense.
Is the small double Bio Cool Hybrid suitable for a guest room?
Yes, and it's arguably the ideal use. Visiting couples can share it for a night or two, the mini pocket springs keep one restless guest from waking the other, and the 120cm width fits second bedrooms that a full double would dominate. We wouldn't suggest it for a couple sleeping on it nightly.
Is a small double long enough for a tall teenager?
At 190cm long it matches the UK single and UK double, so a teenager moving up from a single gains width rather than length. For most that's exactly what's wanted: room to sprawl without losing floor space. Anyone very tall might prefer the UK king, which is 10cm longer, if the room allows.