Rem-Fit 4000 Ortho Elite Hybrid Mattress
Mattress
Rem-Fit 4000 Ortho Elite Hybrid Mattress
Size
Firmness
Construction
Depth (cm)
25
Layers
2
Layer Details
- Memory foam. A stability-focused memory foam layer that minimises sink, which means you'll feel cushioned rather than swallowed. It's designed to stop your hips and shoulders dropping out of alignment.
- Pocket springs. 4000 dual-layer orthopaedic pocket springs with multi-zoned support, so different areas of your body get the right level of push-back. Encapsulated edge support keeps the perimeter usable for sitting and sleeping.
Layer details from rem-fit.co.uk product page, September 2026.
- 75cm of your own: Each sleeper gets 75cm of width, which is 7.5cm more than on a UK double, so you're less likely to end up sleeping on your partner's edge.
- Room for tall sleepers: At 200cm long the UK king adds 10cm over a UK double, which means feet stay on the mattress for a partner nearing 6ft.
- A gap between early and late risers: If one of you is up hours before the other, the extra 15cm of width over a UK double puts a little more distance between the person getting up and the person still asleep.
- Two usable sides: The encapsulated edge support keeps the perimeter firm, so each of you can sit on your own side to get up without the outer strip dipping away.
- Firm support across a wider surface: The 4000 multi-zoned pocket springs keep the 9/10 feel consistent across the full width, so neither side feels softer than the other.
This size suits you if...
You share the bed every night and a double has started to feel cramped, you keep different hours and want a little more distance from each other, or one of you is tall enough that feet already hang near the end of a 190cm mattress.
Consider another size if...
Your bedroom falls short of our suggested 2.7m x 2.9m once the wardrobes are in. We'd recommend the UK double instead, for which we suggest at least 2.6m x 2.8m.
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Is the Rem-Fit 4000 Ortho Elite UK king long enough for a tall partner?
The UK king is 200cm long, or 6ft 6in, which is 10cm longer than a UK double. If one of you is approaching 6ft, that extra length is often the more noticeable change, because it gives room for your pillow at the top and your feet at the bottom without either one pressing against the end.
How much space does each person get on a Rem-Fit 4000 Ortho Elite UK king?
Two people sharing get 75cm each. On a UK double you get 67.5cm each, so the UK king gives you 7.5cm more per person. Sizing up to the UK super king would take you to 90cm each, which is 15cm more per person than the UK king.
Does a UK king help with partner disturbance compared with a double?
The main benefit is distance. The UK king is 15cm wider than a UK double, so there is a little more space between you when one partner turns over or gets up early. Rem-Fit doesn't publish motion isolation figures for this mattress, so we can't say how much movement the springs themselves absorb.
Rem-Fit 4000 Ortho Elite UK king or UK super king for a couple?
The UK super king gives you 90cm each, against 75cm on the UK king, and both are 200cm long. The extra width needs space, though: we suggest at least 3m x 2.9m for the UK super king, compared with 2.7m x 2.9m for the UK king. If your room is tight, the UK king is the more practical choice.
Will a UK king Rem-Fit 4000 Ortho Elite fit a new build master bedroom?
Allow at least 2.7m x 2.9m for a UK king, and 3.2m x 3.2m if you want comfortable room to move. New build bedrooms often lose more floor space than you expect once fitted wardrobes are in, so measure the clear floor space before buying. Measure the room itself as well as the bed frame.