Rem-Fit 600 Lux Black Edition Super King 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
£759.99
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Rem-Fit 600 Lux Black Edition Super King Mattress
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
- 90cm of your own: Each sleeper gets 90cm of width, which means a restless partner can turn over without you feeling it.
- Springs that keep movement local: The pocket springs move independently, so on a surface this wide a partner's movement tends to stay on their side of the bed.
- Space when the household piles in: A child arriving at 3am or a large dog settling at the foot takes up far less of your share on a bed 30cm wider than a UK king.
- A firmer surface that suits larger bodies well: The 7.5/10 med-firm tension gives steady support across the whole 6ft width, so the middle stays usable when a child sleeps there.
- In proportion in a big room: In a spacious master bedroom or a high-ceilinged period room, a UK king can look a little lost, while the UK super king fills the space sensibly.
This size suits you if...
You share with a partner who fidgets or keeps different hours, and you want enough distance that their movement barely reaches you. It also fits if children or a large dog regularly end up in bed with you, and your bedroom comfortably clears our suggested 3m x 2.9m.
Consider another size if...
Your bedroom falls short of our suggested 3m x 2.9m, or you sleep alone. In that case we'd recommend the UK king instead, and we suggest at least 2.7m x 2.9m for that size.
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FAQ's
Is the Rem-Fit 600 Lux Black Edition super king worth it over the king?
The UK super king is 30cm wider than the UK king and the same length, which gives each of two sleepers 15cm more. That extra width matters most if your partner is restless or children join you. You need more room for it, though: we suggest at least 3m x 2.9m, compared with 2.7m x 2.9m for the UK king.
Can two adults and a child sleep on a Rem-Fit 600 Lux UK super king?
For the occasional night, yes. With 90cm each for two adults, a small child in the middle still leaves everyone a workable share. The 7.5/10 med-firm tension helps here, because the centre of the mattress stays supportive and doesn't sag with the extra weight. For a child who joins you every night, the room is tighter, but the arrangement still works.
Does a UK super king stop you feeling your partner move?
Distance does most of the work. At 90cm each, there is a good gap between you, and the 4000 independently moving pocket springs limit how far movement travels across the surface. A very restless partner may still be felt now and then, but far less than on a narrower size.
Is the Rem-Fit 600 Lux super king good if my dog sleeps on the bed?
If a large dog joins you most nights, the extra width of the UK super king means the dog is less likely to push you towards the edge. The firmer 7.5/10 feel also means a heavy dog settling near your feet won't create a noticeable dip that rolls you towards it.
Will a Rem-Fit 600 Lux super king fit in a loft conversion bedroom?
It can, but floor area alone won't tell you. At 180 x 200cm (6ft x 6ft 6in), the mattress needs a wall with enough standing height at the headboard end, so the roof slope usually decides where the bed goes. Check that you still clear our suggested 3m x 2.9m once the low-ceilinged areas are left out.