Jay Be Benchmark S1 Comfort Eco Friendly Single Mattress
The Jay Be Benchmark S1 Comfort Eco Friendly is a firm hybrid mattress at 18cm deep, which is slimmer than many hybrids, so it sits lower on the bed frame and is lighter to move.
- Firm support for back & front sleepers
- Hybrid build for better airflow
- Suits bunks, guest beds & daybeds
£148.68
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Jay Be Benchmark S1 Comfort Eco Friendly Mattress
More available sizes
Mattress details
Mattress
Jay Be Benchmark S1 Comfort Eco Friendly Mattress
Size
Firmness
Firm
Construction
Foam
Hybrid
Rolled
Open Coil Spring
Eco-Friendly
Depth (cm)
18
Layers
3
Layer Details
Advanced e-Fibre
A super soft top layer that's described as award-winning for luxury comfort and breathability. It gives the firm mattress a softer surface to lie on, with airflow built in.
Rebound e-Fibre
A cushioning layer that provides contour support. It sits beneath the top layer and helps the surface follow your shape a little, so the firm feel isn't completely unyielding.
e-Spring core
A deep e-Spring core forms the base of the mattress. It provides the supportive foundation behind the firm feel, and the construction is foam-free.
Layer details from mattressman.co.uk and furniturevillage.co.uk product pages, October 2026.
Key benefits
- Made for raised frames: At 18cm deep, it sits comfortably within the safety rail height of most bunk beds, cabin beds and mid sleepers, where a thicker hybrid would breach the guardrail line.
- Firm support for growing sleepers: The firm feel gives children and teens a flat, supportive surface rather than a soft one they sink into as they grow heavier.
- Fits compact rooms: At 3ft wide, the UK single leaves floor space for a desk, wardrobe and toy storage in a small bedroom, or two beds plus a walkway where siblings share.
- Light enough to shift: The slim hybrid build is lighter to carry than a full-depth mattress, which helps when hauling it up a bunk ladder or into a loft room.
- Guest ready without fuss: In a spare room that doubles as an office, a firm 90 x 190cm mattress on a daybed or fold-out frame stays out of the way between visits.
This size suits you if...
You're buying for a child's bunk, cabin or mid-sleeper frame where mattress depth is limited, and 18cm keeps things safely below the guardrail. Or you're kitting out a spare room, student room or first flat where the frame is a single and you want a firm, supportive mattress without spending much. It also suits solo adults who prefer a firm, no-sink surface.
Consider another size if...
You're an adult sharing the bed, or a restless solo sleeper who wants more width to spread out. We'd recommend the UK double instead, which is 45cm wider and the same length; allow at least 2.6m x 2.8m of floor space for it.
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FAQ's
Is the Jay Be Benchmark S1 single safe for a bunk bed?
It's a strong fit for bunks. Most bunk and mid-sleeper frames specify a maximum mattress depth so the safety rail stays high enough, and at 18cm the Benchmark S1 sits below the limit on most frames. Check your frame's stated maximum before buying, but this is exactly the depth range bunk beds are designed around.
Is a UK single Benchmark S1 big enough for an adult?
For one adult, yes, provided you like a firm feel. At 90 x 190cm it's the standard UK one-person size, and the firm rating suits back and front sleepers. Taller adults should note the 190cm length; if you're near six feet, the UK king at 200cm long gives you 10cm more.
Will the single Benchmark S1 fit a standard single bed frame?
Yes. It's a standard UK single at 90 x 190cm, or 3ft x 6ft 3in, so it fits any frame sold as a UK single, including divans, daybeds and student accommodation beds. Standard single sheets and a single duvet fit without adjustment, and they're the cheapest bedding size to replace.
How much space does a single mattress need in a child's room?
We suggest allowing at least 2.1m x 2.8m of floor space, which leaves room to walk around the bed and open drawers or wardrobe doors. In practice the UK single is the easiest size to place: under a loft slope, against a wall, or as one of two beds with a walkway between them.
Is the Benchmark S1 single too firm for a child?
Firm generally works well for children and teens, who benefit from an even, supportive surface, and lighter bodies press into a firm mattress less than adults do. The exception is a lightweight side sleeper who finds pressure on the shoulder and hip uncomfortable; the firm feel is the same across every size, so that's a model question rather than a size one.