Rem-Fit 600 Lux Black Edition Double Mattress
The Rem-Fit 600 Lux Black Edition is a hybrid mattress, which means it pairs foam comfort with sprung support.
- Open-cell foam reduces heat build-up
- Minimises partner disturbance
- Medium-firm for back & front sleepers
£639.99
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Rem-Fit 600 Lux Black Edition Mattress
More available sizes
Mattress details
Mattress
Rem-Fit 600 Lux Black Edition Mattress
Size
Firmness
Medium Firm
Construction
Foam
Pocket Spring
Hybrid
Memory Foam
Depth (cm)
25
Layers
2
Layer Details
Memory foam
A cool, breathable open-cell memory foam sits at the top of the mattress. The open-cell structure lets air move through more freely, which means the contouring comfort of memory foam with less trapped heat.
Spring system
Beneath the foam is an advanced dual-layer spring system with 4000 contouring pocket springs. Each spring moves independently, so support adapts to your shape and movement transfers less across the bed.
Layer details from rem-fit.co.uk product page, September 2026.
Key benefits
- Shared sleep that leaves room for furniture: At 135 x 190cm, the UK double fits a typical main bedroom and still leaves floor for a bedside table each side, with around 3m x 3m being comfortable.
- Less disturbance at close quarters: You lie closer together on a UK double than on a UK king, so springs that move individually matter more here, keeping a restless partner's movement on their side.
- Firmer support for two back or front sleepers: The 7.5/10 tension suits couples who sleep on their backs or fronts, although a lighter side-sleeping partner may find the shoulder a little firm.
- A proper bed for visiting couples: In a spare room, the UK double sleeps two guests properly yet leaves space for a wardrobe and a chest of drawers alongside.
- Bedding you can buy anywhere: Double sheets and a 200 x 200cm double duvet are on every high street, so you won't need to hunt down specialist sizes to dress the bed.
This size suits you if...
You share the bed with a partner in a room of around 2.6m x 2.8m, where a UK king would squeeze out the bedside tables, or you're furnishing a spare room for couples who come to stay.
Consider another size if...
You and your partner both sleep spread out, and 67.5cm each would feel cramped. We'd recommend the UK king instead, which gives 75cm each; we suggest at least 2.7m x 2.9m for it.
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FAQ's
How much space do two people get on a Rem-Fit 600 Lux UK double?
Each of you gets 67.5cm of width on the UK double. That suits couples who sleep fairly close or lie still, and the pocket springs help limit how much movement crosses the bed. If either of you sprawls, the UK king adds 7.5cm each.
Will a Rem-Fit 600 Lux UK double fit in my bedroom with bedside tables?
We suggest a room of at least 2.6m x 2.8m for a UK double, and around 3m x 3m if you want bedside tables on both sides with easy space to walk round. Below that, measure your furniture before ordering.
Rem-Fit 600 Lux double size in feet?
The UK double measures 4ft 6in x 6ft 3in, or 135 x 190cm. At 25cm deep, check your bed frame's sides aren't so shallow that the mattress sits high above them, and that fitted sheets have enough pocket depth.
Should a tall couple size up from the Rem-Fit 600 Lux UK double to the UK king?
Probably, yes. The UK double is 10cm shorter than the UK king and 15cm narrower, so taller sleepers gain both legroom and 7.5cm of width each. The trade-off is floor space: we suggest at least 2.7m x 2.9m for the UK king.
Is the Rem-Fit 600 Lux UK double good for a guest room?
For visiting couples, yes, as it sleeps two properly without dominating a smaller spare room. The 7.5/10 firmness suits most guests, although a light side sleeper may find it a little firm. If only single guests stay, the UK small double saves 15cm of width; we suggest at least 2.4m x 2.8m for that.