Jay Be Benchmark S1 Comfort Eco Friendly Small Double 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
£168.48
Get the lowest price we've found
Save with the previous model
Some retailers still sell the earlier version of this mattress for less than the current model's best price.
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
- Room to spread out alone: At 30cm wider than the UK single, and the same length, it gives a solo sleeper genuine stretching space on a firm, supportive surface.
- Fits rooms a double crowds: It's 15cm narrower than the UK double, which can be the difference between a door that clears the bed and one that doesn't.
- Slim profile for awkward spaces: The 18cm depth sits low on the frame, useful in loft conversions and box rooms where a tall mattress feels bulky.
- Sensible guest room choice: A firm hybrid at this price handles occasional couple stays without much outlay, and small double frames and bedding are easy to find.
- Light enough to move: A slimmer hybrid is easier to rotate or carry upstairs than a deep pocket-sprung double, handy in rentals and second bedrooms.
This size suits you if...
You sleep alone and want more width than a single, perhaps a teenager who has outgrown their bed in a room that can't spare much floor space. It also suits you if you're furnishing a guest room or holiday let for occasional couples, or you need a double-ish bed in a box room or studio where a 4ft 6in frame simply won't work.
Consider another size if...
You share the bed every night, since 120cm is a squeeze for two adults long term, especially on a firm surface. We'd recommend the UK double instead; allow at least 2.6m x 2.8m of room 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.
FAQ's
What are the dimensions of the Jay Be Benchmark S1 small double?
The UK small double measures 120 x 190cm, which is 4ft x 6ft 3in. That's 30cm wider than the UK single of this mattress, and the same length, so you gain sleeping width without needing a longer room.
Will the Jay Be Benchmark S1 small double fit in a box room?
Often, yes. We suggest a room of at least 2.4m x 2.8m so you can still open doors and walk round the bed. Its 18cm depth also helps in rooms with sloping ceilings, such as loft conversions, where a taller mattress can feel imposing.
Is the small double Benchmark S1 okay for a couple in a guest room?
For occasional stays, yes. Two adults sharing 120cm is snug, and the firm feel means neither of you sinks towards the middle, which helps at this width. As an everyday couples' mattress it's tight, but for a guest room used a few weekends a year it's a practical, low-cost option.
Is the small double a good size for a teenager?
It's a common upgrade from a single. The extra 30cm of width suits a growing teenager, the firm surface offers solid support, and because the UK small double is the same length as the UK single, it often fits the same room with only a modest rearrange.
Where can I buy the Jay Be Benchmark S1 in a UK small double?
Compare the retailers listed on this page. The prices shown here are updated as retailers change them, so it's worth checking more than one before you buy, as budget mattresses like this are discounted fairly often.