Rem-Fit 4000 Ortho Elite Hybrid Single Mattress
The Rem-Fit 4000 Ortho Elite Hybrid is a firm orthopaedic mattress, rated 9/10 on Rem-Fit's own scale, which means it offers noticeably less give than most hybrids.
- 9/10 firm feel for heavier sleepers
- Helps keep your spine aligned
- 100-night trial & 15-year guarantee
£449.99
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Rem-Fit 4000 Ortho Elite Hybrid Mattress
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Mattress details
Mattress
Rem-Fit 4000 Ortho Elite Hybrid Mattress
Size
Firmness
Firm
Construction
Foam
Pocket Spring
Hybrid
Memory Foam
Orthopaedic
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.
Key benefits
- Room left for everything else: At 90cm wide, the UK single leaves floor space for a wardrobe, desk or toy storage, and we suggest a room of at least 2.1m x 2.8m.
- Two beds in a shared or guest room: If siblings share a room, or you want your guest room to sleep two separately, a pair of UK singles leaves space for a walkway between them.
- Usable right to the edge: The encapsulated edge support means a sleeper can use the full 90cm without a rolling-off feeling, which matters on a bed this narrow.
- Firm support for older teens and adults: The 9/10 tension suits back and front sleepers who sag on softer beds, so a UK single for a growing teenager or a solo adult keeps the spine level.
- Fits a slot under a sloping ceiling: In a loft conversion where only a narrow strip has full headroom, the UK single's footprint is often the only size that sits comfortably under the slope.
This size suits you if...
You sleep alone on your back or front and want firm, structured support, or you're furnishing a teenager's room, a student flat or a spare room where floor space is tight and a desk or second bed also needs to fit.
Consider another size if...
You share the bed, or you want room to spread out. We'd recommend the UK small double instead: it is 30cm wider, and we suggest at least 2.4m x 2.8m.
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FAQ's
Is the Rem-Fit 4000 Ortho Elite UK single a good choice for a child?
The UK single suits a child's room well, but the mattress is rated 9/10 firm. Lightweight side sleepers, which describes many younger children, may find it too hard on the shoulders and hips. It is a better match for older teens who sleep on their back or front, or who need firmer support.
Will a Rem-Fit 4000 Ortho Elite single fit a bunk bed or mid sleeper?
The 90 x 190cm footprint matches standard UK single frames. The bigger question is depth: this mattress is 25cm deep. Raised frames usually state a maximum mattress depth to keep the safety rail high enough, so check your frame maker's guidance before buying for a bunk, cabin or mid sleeper.
How much bedroom space do I need for a UK single Rem-Fit 4000 Ortho Elite?
We suggest allowing at least 2.1m x 2.8m of floor space for a UK single. That leaves room to walk around the bed and open drawers. If you're fitting two UK singles into one room, measure for the walkway between them as well.
Is a UK single Rem-Fit 4000 Ortho Elite long enough for a tall adult?
The UK single is 190cm long, the same length as the UK small double and UK double. If your feet reach the end of standard beds, the UK king is 10cm longer, although it is also 60cm wider and we suggest at least 2.7m x 2.9m for it.
Should I get a UK single or a UK small double Rem-Fit 4000 Ortho Elite for a guest room?
For one guest in a small room that doubles as an office, the UK single keeps the desk area clear. The UK small double is 30cm wider at the same length, which gives a solo guest more space to turn, and we suggest at least 2.4m x 2.8m for it.