Jay-Be Benchmark S5 Hybrid Eco-Friendly Mattress
Mattress
Jay-Be Benchmark S5 Hybrid Eco-Friendly Mattress
Size
Firmness
Construction
Depth (cm)
20
Layers
5
Layer Details
- Cover. A knitted fabric cover, which gives a soft-touch sleep surface against the skin.
- Advanced e-Fibre®. An award-winning fibre comfort layer designed for luxury comfort and breathability. Because it's fibre rather than foam, it allows air to move more freely, which means less heat building up overnight.
- Rebound e-Fibre®. A resilient fibre layer that provides contour support, shaping to your body while springing back into place.
- Micro e-Pocket™ springs. A layer of small pocketed springs that move independently, which means the mattress adapts to your shape and weight rather than pushing back uniformly.
- e-Spring™ core. The main spring core, providing the deep support that keeps your spine aligned.
Layer details from furniturevillage.co.uk product page, September 2026.
- Real space for two: At 75cm each for two people sharing, you can both change position without negotiating, which matters most if you've been squeezed on a smaller bed.
- Less partner disturbance: The Micro e-Pocket springs move independently, so when one of you gets up hours before the other, less of that movement carries across a 150cm width.
- Extra length for taller sleepers: The UK king is 10cm longer than the UK double at 200cm, a genuine relief if either of you is approaching six foot.
- Firm support across the full width: The e-Spring core keeps the surface stable edge to edge, which means the firm, no-sink feel holds up even when you spread out.
- Cooler sharing: Two bodies generate more heat than one, and the fibre comfort layers let air move more freely than foam, so a shared bed stays noticeably fresher.
This size suits you if...
You share the bed every night and a double has started to feel like a compromise, one of you is tall enough to appreciate the extra 10cm of length, or you're on different schedules and want a firm mattress that keeps one person's movement from waking the other. Your bedroom can spare at least 2.7m x 2.9m, which is the minimum we'd suggest for a UK king.
Consider another size if...
Your room is under the 2.7m x 2.9m we suggest, or you mostly sleep alone. The UK double would suit a tighter room, and we'd suggest allowing at least 2.6m x 2.8m for it.
Similar Mattresses in This Price Range
Did you know? On Mattress Unboxed we have over 1,000 different mattresses to suit all types of sleepers. View all mattresses.
Is a UK king big enough for a couple who disturb each other?
It helps on two fronts. The width gives you 75cm each for two people sharing, so you're less likely to collide, and the independently moving Micro e-Pocket springs reduce how much one person's movement travels. The firm tension also means less of a ripple effect than a softer, more cradling mattress would give.
Is the Jay-Be Benchmark S5 king long enough for a tall sleeper?
At 200cm, the UK king is 10cm longer than the UK double, which is usually the difference between feet hanging off the end and not. If either of you is around six foot or taller, that length is arguably a bigger upgrade than the width.
Will a UK king fit in a new build master bedroom?
Often yes, but measure carefully. New build masters can be smaller than they look once wardrobes and drawers go in, and we suggest allowing at least 2.7m x 2.9m for a UK king. If yours falls short, the UK double needs less room, at a suggested minimum of 2.6m x 2.8m.
How does a firm mattress feel across a king width?
Consistent, which is the point. The e-Spring core supports the full 150cm evenly, so you don't roll toward the middle or feel a soft spot where you each sleep. Yes, lightweight side sleepers may still find it a little unyielding, but couples who want a stable, no-sink feel get it across the whole surface.
Where can I buy the Jay-Be Benchmark S5 in a king size?
Compare the retailers listed on this page; the prices shown here are updated as retailers change them, so you're seeing current availability rather than a snapshot. Stock for individual sizes does shift, so if the UK king matters to you, it's worth checking the live table rather than assuming every retailer carries it.