Komfi Unity Memory Single Mattress in a Box
The Komfi Unity Memory Mattress in a Box has a Neuform memory foam top layer that gently contours your body, which means you get a cushioned, shaped feel in a 19cm foam mattress.
- Contouring memory foam top layer
- Even head-to-toe support
- Removable washable cover
£197.86
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Komfi Unity Memory Mattress in a Box
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Mattress details
Mattress
Komfi Unity Memory Mattress in a Box
Size
Firmness
Construction
Eco-Friendly
Foam
Memory Foam
Rolled
Depth (cm)
19
Layers
3
Layer Details
Neuform memory foam
A memory foam top layer that Komfi says gently contours your body shape, which means it should cushion you and follow your outline as you lie down.
Reflex foam
A soft Reflex foam layer for gentle head-to-toe, edge-to-edge support, which means the support should feel even across the whole mattress.
Ecofoam base core
The Ecofoam base forms the core of the mattress and, Komfi says, has a reduced carbon footprint, so it gives the layers above a foundation with a lighter environmental impact.
Layer details from komfi.com product page, October 2026.
Key benefits
- Leaves room for everything else: We suggest at least 2.1m x 2.8m of floor space, which means a desk, wardrobe and toy storage can still fit around the bed in a small child's room.
- Check it against raised frames: At 19cm deep, compare it with the maximum mattress depth your bunk, cabin or mid sleeper allows, so the safety rail stays at the height the frame was designed for.
- Two beds, one room: A pair of UK singles suits siblings sharing a room or a guest room that sometimes hosts two friends, as long as you leave a clear walkway between them.
- Easier to keep clean: The zip-off cover is removable and washable, which is especially useful on a child's bed, where spilt drinks and muddy feet are part of normal life.
- Simple to get upstairs: It arrives vacuum packed and rolled in a box, so carrying it up a narrow staircase into a loft conversion or student flat is far less awkward than a flat mattress.
This size suits you if...
You're buying for a child or teenager who sleeps alone, you need a mattress for a bunk, cabin or mid sleeper that takes a standard UK single, or you're furnishing a compact spare room or study where the bed has to share space with a desk.
Consider another size if...
You're an adult who sprawls or wants room to turn freely. We'd recommend the UK small double instead, which is 30cm wider at the same length; allow at least 2.4m x 2.8m.
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FAQ's
Will the Komfi Unity Memory UK single fit a bunk bed?
It's a standard UK single at 90 x 190cm, which is the size most UK bunk beds are built around. The deciding figure is depth: the mattress is 19cm deep, so check your bunk's stated maximum mattress depth before ordering. If the frame's limit is lower, the guard rail on the top bunk won't sit high enough.
How big does a bedroom need to be for a Komfi Unity Memory single?
We suggest at least 2.1m x 2.8m of floor space for a UK single. That leaves room to walk around the bed and open a wardrobe, which matters in a child's bedroom or a box room. In a loft conversion, measure the full-height floor area rather than the whole room.
Is the Komfi Unity Memory UK single long enough for a tall teenager?
The UK single is 190cm long, or 6ft 3in. That suits most teenagers, but a very tall one may find their feet near the end. The UK small double and UK double are the same length, so only the UK king adds length, being 10cm longer than the UK single.
Komfi Unity Memory UK single or UK small double for one adult?
The UK single is 30cm narrower than the UK small double, and both are the same length. If you sleep alone in a small room, the UK single keeps more floor free. If you want space to roll over, the UK small double is more comfortable; we suggest at least 2.4m x 2.8m for that size.
What sheets and duvet fit a Komfi Unity Memory single?
Standard UK single sheets fit, and a single duvet at 135 x 200cm suits the bed. Single bedding is the cheapest and easiest size to find, which helps if you're kitting out two beds for siblings or a guest room. Check that the fitted sheet's pocket suits a 19cm deep mattress.