Komfi Unity Comfort Luxury Double Mattress in a Box
The Komfi Unity Comfort Luxury Mattress in a Box has a soft, high-density Reflex foam top layer over a recycled Ecofoam base, which means a cushioned surface with a deep foam core beneath it.
- Cushioned Reflex foam comfort
- Made with recycled foam
- Removable washable cover
£209.54
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Komfi Unity Comfort Luxury Mattress in a Box
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Mattress details
Mattress
Komfi Unity Comfort Luxury Mattress in a Box
Size
Firmness
Construction
Eco-Friendly
Foam
Rolled
Depth (cm)
20
Layers
2
Layer Details
Reflex HD top layer
A soft, high-density Reflex foam layer. It gives you a cushioned surface with support underneath.
Ecofoam base
A deep base made with recycled and re-engineered foam. It provides the core support and is recyclable at the end of its life.
Layer details from komfi.com product page, October 2026.
Key benefits
- Sized for sharing: Each of you gets 67.5cm of width, which is enough for most couples who sleep fairly still and don't mind being a little close.
- Fits a normal bedroom: We suggest at least 2.6m x 2.8m for a UK double, so a modest master bedroom can usually keep a bedside table on each side.
- Easy to get upstairs: The mattress comes vacuum packed and rolled, which means a winding staircase in an older terrace is far less of a struggle than with a flat double.
- Bedding is simple to find: Standard double sheets and a 200 x 200cm double duvet fit, so you're not hunting for specialist sizes when you set up the room.
- Good for a guest room: If couples stay over now and then, a UK double gives them proper shared space without the bed filling a smaller spare room.
This size suits you if...
You share the bed with a partner and your room can't take anything bigger without losing the bedside tables, or you're furnishing a first home and want one sensible shared size. It also suits you if the spare room needs a bed for visiting couples.
Consider another size if...
You both sprawl, or one of you is tall and finds 190cm long too short. We'd recommend the UK king instead, and we suggest at least 2.7m x 2.9m for it.
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FAQ's
What size is the Komfi Unity Comfort Luxury UK double in feet?
The UK double measures 135 x 190cm, which is 4ft 6in x 6ft 3in. That's the standard British double footprint, so it will match a standard double bed frame or divan base.
Is the Komfi Unity Comfort Luxury UK double big enough for two people?
For most couples, yes. You each get 67.5cm of width. If one of you moves a lot at night, you may feel a little cramped, and the UK king gives 75cm each, so the UK double gives 7.5cm less each than the UK king.
What size bedroom do I need for a UK double mattress?
We suggest at least 2.6m x 2.8m for a UK double. Around 3m x 3m is more comfortable if you want bedside tables on both sides and a wardrobe with doors that open freely.
What bedding fits the Komfi Unity Comfort Luxury in a double?
Standard double fitted sheets and a 200 x 200cm double duvet fit the UK double. The mattress is 20cm deep, so check the fitted sheet's pocket depth suits that before you buy.
Should I get the UK double or UK king Komfi Unity Comfort Luxury?
The UK double is 15cm narrower and 10cm shorter than the UK king. If your room is tight, the UK double is the safer fit. If you have the space, we suggest at least 2.7m x 2.9m for the UK king, and taller sleepers will appreciate the extra length.