Jay-Be Benchmark S3 Memory Eco-friendly King Size Mattress
The Jay-Be Benchmark S3 Memory Eco-friendly Mattress is a firm, foam-free design that uses layered e-Fibre® materials over a sprung core instead of traditional memory foam, which means you get pressure relief without the sink-in heat that foam can trap.
- Firm support for back & front sleepers
- Eases pressure without feeling stuck
- Foam-free & fully recyclable
£258
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Jay-Be Benchmark S3 Memory Eco-friendly Mattress
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Mattress details
Mattress
Jay-Be Benchmark S3 Memory Eco-friendly Mattress
Size
Firmness
Firm
Construction
Foam
Rolled
Memory Foam
Eco-Friendly
Depth (cm)
19
Layers
5
Layer Details
Cover
A knitted fabric cover, which means a soft-touch surface against your skin from the moment you lie down.
Advanced e-Fibre®
An award-winning comfort layer designed for luxury comfort and breathability, so air moves through rather than building up heat.
Memory e-Fibre®
A memory layer offering quick-response pressure relief. Unlike traditional memory foam, it recovers quickly, so you won't feel stuck when you change position.
Rebound e-Fibre®
A rebound layer that contours to your shape, which means support that follows your body rather than a flat, rigid feel.
e-Spring™ core
A deep sprung core with supportive comfort layers, giving the mattress its firm, stable foundation.
Layer details from furniturevillage.co.uk product page, September 2026.
Key benefits
- Space to sleep apart, together: At 75cm each for two people sharing, you can both turn over without negotiating, which matters most on a firm mattress where movement is felt less anyway.
- Firm support reduces partner disturbance: The e-Spring™ core and quick-response e-Fibre® layers keep the surface stable, so an early alarm on one side is less likely to wake the other.
- Extra length for taller sleepers: The UK king is 10cm longer than the UK double at 200cm, a genuine relief if one of you is approaching six foot.
- Easier to handle than most kings: The 19cm depth makes this a slimmer mattress than many, which means rotating it or fitting sheets is less of a wrestle at this size.
- A recyclable buy at family scale: Choosing the biggest size this mattress comes in usually means the biggest environmental footprint, but the fully recyclable, foam-free build softens that trade-off.
This size suits you if...
You share the bed every night and have outgrown a double, especially if you and your partner keep different hours and want movement on one side to stay on that side. It also suits couples where one of you is tall, since the 200cm length adds 10cm over a UK double, or where a dog has quietly claimed a share of the mattress and 135cm no longer stretches to three.
Consider another size if...
Your bedroom is smaller than the 2.7m x 2.9m we suggest for a UK king, particularly a new build master that shrinks once wardrobes go in. We'd recommend the UK double instead, which needs at least 2.6m x 2.8m.
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FAQ's
Is the Jay-Be Benchmark S3 in a UK king good for couples?
Yes, and arguably it's the size this mattress makes most sense in. You get 75cm each for two people sharing, and the firm e-Fibre® construction transfers less movement than a soft sink-in surface, so a partner shifting position or getting up early disturbs you less. Lightweight side sleepers may still find the firm feel a little unforgiving.
What room size do I need for the UK king Jay-Be Benchmark S3?
We suggest a room of at least 2.7m x 2.9m for a UK king, which leaves enough space to walk round the bed and open drawers. That's our guidance rather than Jay-Be's. Measure with wardrobes and bedside tables in place, because floor space on paper rarely matches floor space you can actually use.
Is the UK king long enough for someone over six foot?
At 200cm, or 6ft 6in, the UK king gives a tall sleeper meaningful headroom, and it's 10cm longer than the UK double. For many couples where one partner is over six foot, that extra length is the real reason to upgrade. The width is a bonus rather than the point.
How much bigger is the king than the double in this mattress?
The UK king is 15cm wider and 10cm longer than the UK double, taking you from 135 x 190cm to 150 x 200cm. That 15cm sounds modest, but split between two people it's the difference between sleeping shoulder to shoulder and having proper space of your own each night.
Does the Jay-Be Benchmark S3 come in a super king?
No. The UK king, at 150 x 200cm, is the largest size this mattress is made in. If you want more width than that, you'd need to look at a different model. For most couples upgrading from a double, the king's 75cm each for two people sharing is plenty.