KomfiMed Ortho Firm Double Mattress
The KomfiMed Ortho Firm is a 25cm all-foam mattress with a firm feel, which means solid, even support rather than a cushioned sink-in surface.
- Firm, responsive on-top feel
- Minimises partner disturbance
- Cooling gel helps regulate temperature
£674
Get the lowest price we've found
Save with the previous model
Some retailers still sell the earlier version of this mattress for less than the current model's best price.
KomfiMed Ortho Firm Mattress
More available sizes
Mattress details
Mattress
KomfiMed Ortho Firm Mattress
Size
Firmness
Firm
Construction
Foam
Gel
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.
Key benefits
- The classic couples' footprint: At 135 x 190cm, the UK double fits comfortably in rooms where a UK king would crowd out wardrobes and drawers.
- 67.5cm each when sharing: Two people sharing get 67.5cm each, and the firm surface means neither of you rolls towards the middle.
- Less disturbance across a shared bed: The castellated foam layer reduces motion transfer, which matters more in a double, where a restless partner is never far away.
- Room for bedside tables on both sides: In a room of around 3m x 3m, the UK double leaves space for a table and lamp each, something a wider size can squeeze out.
- Easy to dress and to move: Double bedding is stocked everywhere at every price, and a foam double is more manageable up a turning staircase than larger sizes.
This size suits you if...
You share the bed most nights and want the standard couples' size in a typical UK bedroom, you sleep alone but like room to stretch out, or you're kitting out a guest room that needs to take visiting couples without dominating the space. It also suits a first flat or second bedroom where the bed has to coexist with a wardrobe and chest of drawers.
Consider another size if...
You're a taller couple or simply want more elbow room each, and your bedroom can take a bigger bed. We'd recommend the UK king instead: it's 15cm wider and 10cm longer, and we suggest a room of at least 2.7m x 2.9m for it.
Similar Mattresses in This Price Range
Did you know? On Mattress Unboxed we have over 1,000 different mattresses to suit all types of sleepers. View all mattresses.
FAQ's
Is the KomfiMed Ortho Firm double big enough for two people?
Yes, the UK double is the traditional size for couples, giving 67.5cm each for two people sharing. The firm reflex foam core helps here: you sleep on top of the surface rather than sinking towards each other, and the castellated foam layer softens the effect of a partner turning over in the night.
What room size do I need for the KomfiMed Ortho Firm in a UK double?
We suggest at least 2.6m x 2.8m, with around 3m x 3m the comfortable norm. That allows walking space on both sides plus room to open drawers and wardrobe doors. If you want bedside tables on both sides of the bed, aim for the roomier end of that range.
Should I buy the KomfiMed Ortho Firm in a double or a king?
The UK double is 15cm narrower and 10cm shorter than the UK king. If your room meets our suggested 2.7m x 2.9m minimum for the UK king and you share every night, the extra width is a genuine comfort gain. In a smaller room, the UK double keeps the space usable.
Will a double KomfiMed Ortho Firm fit up narrow stairs?
As an all-foam mattress it has more flex than a sprung one, which helps on the turning stairs of older terraces and tight new build landings. Komfi doesn't publish specific access guidance for the UK double, so measure your tightest turn and doorways before ordering, and check the retailer's delivery advice.
Is the double KomfiMed Ortho Firm a good guest room mattress?
It's a sensible guest room choice: the UK double accommodates visiting couples as well as solo guests, and the firm feel suits a wide range of unknown sleepers better than something very soft would. Lightweight side sleepers may find it a little unyielding, so it's a slight gamble for that one guest.