Komfi Unity Memory Deluxe Mattress
Mattress
Komfi Unity Memory Deluxe Mattress
Size
Firmness
Medium Firm
Construction
Depth (cm)
17
Layers
3
Layer Details
- Neuform Memory Foam. A specialised Neuform memory foam layer sits at the top, cushioning you and lifting pressure off joints and muscles. It's also designed to reduce heat, which means a slightly cooler night than traditional memory foam tends to give.
- Reflex Foam. At the heart of the mattress, this soft, flexible reflex foam shapes around your contours. It absorbs movement and limits motion transfer, so a restless partner is less likely to wake you.
- Ecofoam. The base layer is Ecofoam, made from recycled foam and fully recyclable. It's a modest but genuine plus if sustainability matters to you.
Layer details from mattressonline.co.uk product page, September 2026.
- Slim enough for raised frames: At 17cm deep, it sits below the safety rail on most bunks, cabin beds and mid sleepers, where a chunkier mattress would leave the rail too low.
- Suits lighter bodies: The shallower build works in its favour here, since children, teens and lighter adults are unlikely to press through to the firmer base.
- Frees up floor space: At 90cm wide it leaves room for a desk, wardrobe and toy storage in a compact child's bedroom, or two beds with a walkway between them for sharing siblings.
- Guest-ready without fuss: Its medium firm feel suits occasional guests of varying preferences, and single bedding is the cheapest and easiest to keep spare.
- Movement stays put: The reflex foam core absorbs motion, useful when two singles share a children's room and one occupant is more restless than the other.
This size suits you if...
You're buying for a child's room or a teenager moving up from a smaller bed, you need a mattress slim enough for a bunk or mid sleeper frame, or you're kitting out a spare room or study that doubles as guest space. It also suits a student or first flat where the frame came with the room but the mattress didn't.
Consider another size if...
An adult couple will share it every night, or a growing teen is already close to its 190cm length. We'd recommend the UK double instead, which is 45cm wider and the same length; allow at least 2.6m x 2.8m for it.
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Will the Komfi Unity Memory Deluxe single fit a bunk bed?
It's a strong candidate. The UK single's 90 x 190cm footprint matches standard UK bunk, cabin and mid sleeper frames, and at 17cm deep it should sit comfortably below the safety rail. Check your frame's maximum mattress depth before ordering, as some bunks specify a limit, but 17cm clears most of them.
Is the UK single Komfi Unity a good choice for a child?
Yes, arguably its best use. The medium firm feel gives growing bodies proper support rather than a deep sink, and lighter sleepers won't press through the slim profile to the firmer base. The Neuform top layer is designed to run cooler than traditional memory foam, which helps children who overheat at night.
What room size do I need for a single Komfi Unity mattress?
We suggest allowing at least 2.1m x 2.8m of floor space. That leaves room to walk around the bed and open drawers or wardrobe doors. Because the UK single is only 90cm wide, it also works under a loft conversion slope or in a box room where nothing wider would fit sensibly.
Can two singles work for siblings sharing a room?
Often better than one bigger bed. Two UK singles at 90cm wide each can fit with a walkway between them in an average child's room, and this mattress's reflex foam core absorbs movement, so a restless child on one bed won't shake the other. Single bedding is cheap to buy twice, too.
Should I size up to the UK small double instead?
For a teenager or a single adult who wants more sprawling room, possibly. The UK small double is 30cm wider than the UK single and the same length, and we suggest allowing at least 2.4m x 2.8m for it. For a child's room or a bunk frame, the UK single remains the practical pick.