KomfiMed Ortho Firm Mattress
Mattress
KomfiMed Ortho Firm Mattress
Size
Firmness
Firm
Depth (cm)
25
Layers
5
Layer Details
- Microquilted cover. A micro-quilted cover gives the sleep surface a smooth, soft finish. It takes a little of the edge off an otherwise firm mattress.
- Castellated foam. This medically-proven castellated foam layer minimises motion transfer. In practice, that means less disturbance when a partner turns over in the night.
- TrueGel Technology. Komfi's naturally cooling TrueGel technology helps regulate your temperature. Foam can run warm, so this layer works against that tendency.
- Reflex Foam. A core reflex support layer provides a firm, responsive foundation. This is where the mattress gets its orthopaedic-style, on-top-of-the-bed feel.
- Ecofoam. The base is a resilient, durable Ecofoam layer made from 100% recycled and re-engineered foam. It's also naturally dust-mite resistant, which allergy sufferers will appreciate.
Layer details from mattressonline.co.uk product page, September 2026.
- Fits the smallest rooms: At 90cm wide, this mattress leaves floor space for a desk, wardrobe and toy storage in a compact child's bedroom.
- Firm support for growing bodies: The reflex foam core gives solid, even support, which many parents look for in a mattress a child will use for years.
- A settled guest bed: The Ecofoam base is durable and naturally dust-mite resistant, so it holds up well in a spare room that sits unused for weeks.
- Cooler than typical foam: TrueGel technology works against the warmth foam can build up, useful in small rooms and loft spaces that trap heat.
- Cheap, easy bedding: Standard single sheets and a 135 x 200cm single duvet fit, the most widely stocked and affordable bedding of any UK size.
This size suits you if...
You're buying for a child or teenager and want a firm, supportive surface rather than a soft one they'll sink into; you sleep alone and your room is on the small side, perhaps a loft conversion or a first flat where only a narrow footprint works; or you're kitting out a spare room and want a low-fuss guest bed that resists dust mites between visits.
Consider another size if...
You're a single adult who spreads out in the night, or you want space for a partner to stay over sometimes. We'd recommend the UK double instead, which is 45cm wider and the same length; allow at least 2.6m x 2.8m of floor space for it.
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Is the KomfiMed Ortho Firm UK single a good mattress for a child?
It's a reasonable fit for older children and teens who suit a firm surface, and the 90 x 190cm footprint is the UK standard for kids' beds, so it drops into most children's frames. Two points of caution: the firm feel may be too unyielding for very light sleepers, and owner feedback is currently sparse.
Will the KomfiMed Ortho Firm fit a bunk or mid sleeper frame?
The UK single's 90 x 190cm footprint matches standard UK bunk and mid sleeper frames. The catch is depth: at 25cm, this mattress may sit too high against a bunk's safety rail, so check your frame's maximum mattress depth before buying. For a lower cabin bed or mid sleeper, the height is usually less of an issue.
What room size do I need for a UK single KomfiMed Ortho Firm?
We suggest at least 2.1m x 2.8m of floor space, which gives you room to walk alongside the bed and open drawers or a wardrobe. That makes the UK single workable in box rooms, loft conversions with a narrow flat section, and spare rooms doubling as an office where a wider bed simply wouldn't leave space for a desk.
Should I get the UK single or UK double for a guest room?
If the room mainly hosts one guest at a time, or you want two single beds rather than one larger one, the UK single makes sense. For couples staying over, the UK double is the better call: it's 45cm wider and the same length, and we suggest allowing at least 2.6m x 2.8m of floor space for it.
How does the KomfiMed Ortho Firm UK single compare to a small double?
The UK single is 30cm narrower than the UK small double, and both are the same length. The KomfiMed Ortho Firm isn't made in a small double, though: it comes in UK single, UK double, UK king and UK super king. If you want more width in this mattress, the UK double is the next size up.