Komfi Unity Comfort Luxury Single 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
£165.35
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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
- Leaves space for everything else: At 90cm wide, a UK single leaves room for a desk, wardrobe or toy storage, and we suggest allowing at least 2.1m x 2.8m of floor space.
- A depth you can check against raised frames: The mattress is 20cm deep, which means you can compare it directly with the maximum mattress depth your bunk, cabin or mid sleeper manufacturer states.
- Easy to get into awkward rooms: It arrives rolled and vacuum packed, so getting a UK single up a narrow loft staircase or round a tight landing is far simpler than with a flat mattress.
- A cover you can wash between sleepers: The removable, washable cover suits a child's bed or a guest bed used by different visitors, because you can freshen it whenever it needs it.
- Standard single bedding fits: Ordinary single sheets and a single duvet (135 x 200cm) fit, so setting up a guest room with two of these needs no special bedding.
This size suits you if...
You sleep alone in a smaller bedroom, you're furnishing a room for a child or teenager, or you'd like two separate beds in a guest room rather than one double.
Consider another size if...
You share your bed, or you're an adult who sprawls and would find 90cm narrow. We'd recommend the UK small double instead: it's 30cm wider, and we suggest at least 2.4m x 2.8m for the UK small double.
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FAQ's
Will the Komfi Unity Comfort Luxury UK single fit a bunk bed?
The UK single is the standard bunk size at 90 x 190cm, so the footprint should match. The depth matters more on a raised frame: this mattress is 20cm deep, and bunk and mid sleeper makers set a maximum depth so the guard rail stays effective. Check your frame's guidance before buying.
What size room do I need for a UK single Komfi mattress?
We suggest allowing at least 2.1m x 2.8m for a UK single. That leaves enough floor for a bedside table and a clear route to the door, and in a child's room it usually leaves space for a desk or storage alongside the bed.
Is a UK single mattress long enough for an adult?
At 190cm, a UK single is the same length as the UK small double and UK double, so it suits most adults lengthways. Width is the bigger limit: 90cm works for a solo sleeper who lies fairly still, but restless adults often find it a little narrow.
What bedding fits a Komfi Unity Comfort Luxury single?
Standard UK single fitted sheets fit the 90 x 190cm surface, and a single duvet (135 x 200cm) gives enough overhang for one sleeper. Make sure the fitted sheet's pocket is deep enough for a 20cm mattress, as shallow ones can pop off at the corners.
Should I buy a UK single or UK small double for a teenager?
A UK single suits a teenager in a smaller room, needing at least 2.1m x 2.8m. The UK small double is 30cm wider at the same length, giving a growing teen more space, but we suggest at least 2.4m x 2.8m for it.