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.
- A sensible depth for bunks and cabin beds: At 20cm deep, this single should sit below the guard rail on most bunk and mid-sleeper frames, though check your frame's maximum mattress depth first.
- Firm support for growing backs: The firm tension gives children and teens a stable, no-sink surface, which means the spine stays level rather than sagging into the mattress.
- Foam-free, which matters in small rooms: Fibre layers over pocketed springs let air move freely, so a bed pushed against a wall in a compact bedroom is less likely to trap heat.
- Fits almost any room: At 3ft wide, this single leaves floor space for a desk, wardrobe and toy storage, or lets two beds share a room with a walkway between.
- Cheap, easy bedding: Standard single sheets and a 135 x 200cm duvet fit, and both are the most widely stocked and affordable bedding of any UK size.
This size suits you if...
You're buying for a child or teenager who needs firm, foam-free support, you're kitting out a spare room or a study that occasionally hosts guests, or you need a slim mattress for a bunk, cabin or mid-sleeper frame where depth is limited. It also suits a student room or first flat where the frame came with the property but the mattress didn't.
Consider another size if...
You're a single adult who spreads out in bed, or you're used to anything wider than 90cm. We'd recommend the UK small double instead, which is 30cm wider and the same length; allow at least 2.4m x 2.8m of floor space for it.
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Will the Jay-Be Benchmark S5 single fit a bunk bed?
In most cases, yes. The UK single is 90 x 190cm, the standard footprint for UK bunk, cabin and mid-sleeper frames, and at 20cm deep it should sit below the guard rail on most raised beds. Frames vary, so check the maximum mattress depth your frame's manufacturer specifies before buying.
Is the Jay-Be Benchmark S5 single a good mattress for a child?
It's a strong fit for many children. The firm tension keeps a growing spine supported, and the foam-free fibre construction sleeps cooler than memory foam. One caveat: lightweight side sleepers may find it slightly hard at the shoulder and hip, so a child who sleeps mostly on their side might prefer a medium-tension mattress.
What are the dimensions of the Jay-Be Benchmark S5 in a UK single?
The UK single measures 90 x 190cm, which is 3ft x 6ft 3in. For comparison, the UK single is 45cm narrower than the UK double and the same length, and 60cm narrower and 10cm shorter than the UK king. Standard single bedding and a 135 x 200cm duvet fit it.
How much space do I need for a single mattress in a small room?
We suggest allowing at least 2.1m x 2.8m of floor space for a UK single. That leaves room to walk alongside the bed and open drawers or a wardrobe. In a loft conversion, the narrow 90cm footprint means the bed can often sit under the slope where a wider size wouldn't.
Can two Benchmark S5 singles share one room?
Yes, and it's a common setup for siblings or a guest room that hosts two people who don't share a bed. Two singles at 90cm wide each leave more walkway space than one large bed in most rooms, and the pocketed springs mean each sleeper gets independent support on their own mattress.