Komfi Unity Regular King Size Mattress in a Box
The Komfi Unity Regular is a mattress in a box, delivered rolled and compressed so it fits through doorways and up narrow stairs more easily than a traditional flat mattress.
- Medium-firm feel
- Removable, washable cover
- Made from recycled foam offcuts
£153.06
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Komfi Unity Regular Mattress in a Box
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Mattress details
Mattress
Komfi Unity Regular Mattress in a Box
Size
Firmness
Medium Firm
Construction
Rolled
Depth (cm)
Layers
Layer Details
Key benefits
- Proper space for two: You get 75cm each for two people sharing, which means fewer elbows and less disturbance when one of you shifts in the night.
- Extra length for taller sleepers: At 200cm, the UK king is 10cm longer than the UK double, a genuine relief if either of you is approaching six foot.
- Easier partner exits: If one of you leaves for work hours before the other, the wider surface means getting up is less likely to wake the person still asleep.
- Boxed delivery suits king buyers: A flat 150cm-wide mattress is awkward on stairs, so the rolled format matters more at this size than any smaller one.
- A guest room king on a budget: For a spare room where visiting couples stay occasionally, this size at this price point makes more sense than it would for demanding nightly adult use.
This size suits you if...
You're a couple who has outgrown a double and wants the extra width without spending heavily, perhaps for a guest room or a rental property. It also fits if one of you is on a different schedule and you want space to come and go without waking your partner, or if either sleeper needs the extra 10cm of length a UK king offers over a UK double.
Consider another size if...
Your bedroom falls short of the 2.7m x 2.9m we suggest for a UK king, or you're buying for one teenager rather than two adults. We'd recommend the UK double instead, which needs at least 2.6m x 2.8m.
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FAQ's
Is the Komfi Unity Regular in a UK king big enough for two adults?
Dimensionally, yes: at 150 x 200cm it gives 75cm each for two people sharing, comfortably more than a UK double. The caveat is the mattress itself, which Komfi pitches towards kids and teenagers, so two heavier adults sleeping on it every night may find it a stretch for long-term use.
How much bigger is the UK king than the UK double?
The UK king is 15cm wider than the UK double and 10cm longer. The width is what reduces partner disturbance night to night, while the extra length is the difference that matters if either of you is tall. Room-wise, we suggest at least 2.7m x 2.9m for a UK king.
Will the king size fit up narrow stairs?
This is where the boxed format helps most. The Komfi Unity Regular arrives rolled and compressed, so instead of manoeuvring a rigid 150cm-wide mattress round a tight landing, you carry a box upstairs, unroll it on the base and let it expand. It's a one-person job at any size, including this one.
What size room do I need for the Komfi Unity Regular UK king?
We suggest a room of at least 2.7m x 2.9m, which leaves space to walk round the bed and open drawers. New build master bedrooms can feel smaller than the floor plan suggests once wardrobes go in, so measure with furniture in place before committing to the UK king.
Does the Komfi Unity Regular come in a super king?
No. The UK king, at 5ft x 6ft 6in, is the largest size Komfi makes this mattress in. If you want the extra 30cm of width a UK super king offers, you'll need to look at a different model. To compare prices on the UK king, use the live retailer table on this page.