Jay Be Pure Anti-Allergy 800 Pocket King Size Mattress
The Jay Be Pure Anti-Allergy 800 Pocket is a medium firmness, foam-free pocket sprung mattress with a hypoallergenic focus.
- Allergy-conscious, foam-free build
- Breathable layers reduce heat build-up
- 10-year guarantee
£499
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Jay Be Pure Anti-Allergy 800 Pocket Mattress
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Mattress details
Mattress
Jay Be Pure Anti-Allergy 800 Pocket Mattress
Size
Firmness
Medium
Construction
Foam
Pocket Spring
Depth (cm)
23
Layers
4
Layer Details
Fabric cover
A deep quilted cover made from OEKO-TEX Standard 100 certified fabric, enriched with Margosa and linseed oils. The certification means the fabric has been tested against harmful substances, a reassurance for allergy-prone sleepers.
Comfort layer
Extra-soft Advance e-Fibre sits directly beneath the cover, giving gentle cushioning at the surface. It also supports airflow and moisture control, which helps you stay drier through the night.
Comfort layers
Breathable, open-structured comfort layers let air circulate freely through the mattress. The whole design is 100% foam-free, so heat has somewhere to go rather than sitting around you.
Spring core
800 individually pocketed springs each respond to your body independently, adapting to your shape rather than moving as one unit. That independence also reduces motion transfer, so a restless partner is less disruptive.
Layer details from jaybe.com product page, September 2026.
Key benefits
- Space for two proper sides: At 75cm each for two people sharing, you can both turn over without negotiating territory, which suits couples who have outgrown a UK double.
- Less partner disturbance across a wider bed: The pocketed springs respond independently, and the added width of a UK king puts more distance between you, so an early riser leaves quietly.
- Extra length for taller sleepers: The UK king is 10cm longer than the UK double, welcome relief if one of you is approaching six foot and used to feet at the edge.
- Cooler at this size: The foam-free, open-structured layers let air move through a large sleeping surface, which means two bodies' worth of heat has somewhere to go.
- Manageable despite the size: It arrives vacuum packed and rolled, so getting a king up a narrow staircase is a two-person carry rather than a removals job.
This size suits you if...
You share the bed every night and a UK double has started to feel like a compromise, one of you gets up hours before the other and you want the movement isolation this mattress offers stretched across a wider surface, or one partner is tall enough that the extra 10cm of length over a UK double is the real reason you're upgrading.
Consider another size if...
Your bedroom is under our suggested minimum of 2.7m x 2.9m, or you sleep alone and don't need the width. We'd recommend the UK double instead, which needs at least 2.6m x 2.8m of floor space.
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FAQ's
How much space do two people get on the Jay Be Pure Anti-Allergy 800 Pocket king?
The UK king measures 150 x 200cm, which gives 75cm each for two people sharing. Combined with 800 individually pocketed springs that respond to each of you separately, that width means one restless or early-rising partner is far less likely to wake the other.
Will a UK king version of this mattress fit my bedroom?
We suggest a room of at least 2.7m x 2.9m for a UK king, with 3.2m x 3.2m comfortable, allowing you to walk round both sides and open drawers. New build master bedrooms can feel smaller than expected once fitted wardrobes go in, so measure the usable floor rather than the room on the plan.
Is the king size worth it over the double for this mattress?
The UK king is 15cm wider than the UK double and 10cm longer, a difference a sharing couple feels every night. If either of you is tall, or you're propping pillows and shifting position through the night, the extra room removes the constant negotiation. If your room is tight, the UK double remains a sensible choice.
Is this mattress available in a UK super king?
No. The Jay Be Pure Anti-Allergy 800 Pocket comes in UK single, small double, double and king, so the UK king at 150 x 200cm is the largest size made. For most couples it is generous, though a shared bed with a dog claiming its usual patch will still feel it.
Where can I buy the Jay Be Pure Anti-Allergy 800 Pocket in a UK king?
Stock and pricing for the UK king change regularly, so the most reliable route is to compare the retailers listed on this page. The prices shown here are updated as retailers change them, which saves checking each site in turn.