Jay Be Bio Fresh e-Pocket Eco-Friendly King Size Mattress
The Jay Be Bio Fresh e-Pocket is a children's pocket spring mattress, made in the UK and 100% foam free.
- Breathable fibres keep kids cooler
- Foam-free, recyclable & vegan-friendly
- 10-year guarantee
£454.95
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Jay Be Bio Fresh e-Pocket Eco-Friendly Mattress
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Mattress details
Mattress
Jay Be Bio Fresh e-Pocket Eco-Friendly Mattress
Size
Firmness
Medium
Construction
Depth (cm)
Layers
4
Layer Details
Bio Fresh fabric
The sleeping surface is Bio Fresh fabric, enriched with sustainable, natural herbal extracts. It's the layer your child lies closest to, and it's OEKO-TEX 100 certified along with the rest of the mattress.
Breathable e-Fibre™ comfort layers
Breathable e-Fibre comfort layers provide the cushioning in place of foam, which means air can move through the mattress more freely. That helps keep the sleeping surface cooler through the night.
Deep e-Pocket™ core
A Deep e-Pocket core provides responsive support, with each pocketed spring moving independently. In practice that means the mattress adapts to your child's body rather than pushing back as one solid unit.
Cushioned border
A cushioned border runs around the edge for increased durability. It helps the mattress keep its shape over years of use, useful given how children treat their beds.
Layer details from jaybe.com product page, September 2026.
Key benefits
- More elbow room than a double: At 75cm each for two sharing, the UK king gives you 7.5cm more per person than the UK double, so you're a little less likely to bump into each other mid-turn.
- Extra length for taller partners: At 200cm, or 6ft 6in, the UK king is 10cm longer than the UK double, which means a partner over six foot has more room before their feet reach the edge.
- Quieter for different schedules: The individually pocketed springs respond separately, which means an early riser climbing out before dawn should cause less movement on the sleeping partner's side.
- Cooler with two in the bed: Breathable e-Fibre layers sit where foam usually would, so air moves through the mattress more freely, which helps when two people share one duvet.
- A size most master bedrooms can take: We suggest at least 2.7m x 2.9m for the UK king, with 3.2m x 3.2m giving comfortable space for bedside tables and walking round.
This size suits you if...
You share the bed every night and keep waking when your partner shifts, or one of you is over six foot and has run out of length on a double. It also suits couples who go to bed and get up at very different times.
Consider another size if...
Your bedroom is under our suggested 2.7m x 2.9m once wardrobes and drawers are in. We'd recommend the UK double instead, which needs at least 2.6m x 2.8m.
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FAQ's
How much space does each person get on the Jay Be Bio Fresh UK king?
Each of you gets 75cm of width when two people share the UK king. Compared with the UK double, at 67.5cm each, the UK king gives you 7.5cm more each. That sounds small on paper, but you'll notice it most when one of you sleeps on their side with knees bent.
Is the Jay Be Bio Fresh king size long enough for someone over 6ft?
The UK king measures 200cm long, or 6ft 6in, which is 10cm longer than the UK double and the UK single. If one of you is over six foot, that extra length is often the real reason to size up, more than the added width.
What room size do I need for a UK king Jay Be Bio Fresh mattress?
We suggest at least 2.7m x 2.9m for a UK king, and 3.2m x 3.2m if you want comfortable space around it. New build master bedrooms can feel smaller once fitted wardrobes go in, so measure after furniture rather than from the floor plan.
Will I feel my partner moving on the Jay Be Bio Fresh king size?
You should feel a little less than on a single-unit spring, because each pocketed spring moves independently. Pair that with 75cm each on the UK king and a partner getting up early or turning over is less likely to wake you, although very light sleepers may still notice some movement.
What bedding fits a UK king mattress like the Jay Be Bio Fresh?
You'll need sheets made for a UK king, which is 150 x 200cm, and a king duvet at 230 x 220cm. Double bedding is both narrower and shorter, so it won't stay tucked in on a UK king.