Komfi Unity Pocket 1000 King Size Mattress in a Box
The Komfi Unity Pocket 1000 is a pocket sprung mattress delivered rolled in a box, available in five UK sizes from Small Single through to King.
- Minimises partner disturbance
- Easy to get up narrow stairs
- Includes small single & small double
£261.42
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Komfi Unity Pocket 1000 Mattress in a Box
More available sizes
Mattress details
Mattress
Komfi Unity Pocket 1000 Mattress in a Box
Size
Firmness
Medium
Construction
Pocket Spring
Rolled
Depth (cm)
Layers
2
Layer Details
Reflex foam top layer
A 3cm layer of high-density Reflex foam sits at the top of the mattress. It adds a layer of cushioning over the springs, so the surface feels softer than bare springs would.
Pocket spring core in Ecofoam
Traditional pocket springs, each moving independently, are encased in Ecofoam made from 100% recycled foam. Because the springs work separately, the mattress can respond to each sleeper, which means less disturbance from a partner's movement. The recycled foam is a plus if you prefer to cut down on waste.
Layer details from komfi.com and archerssleepcentre.co.uk product pages, October 2026.
Key benefits
- 75cm each for two sharing: A UK king gives 75cm each for two people sharing, which means you can turn over without negotiating for territory first.
- Pocket springs across a wider bed: The 1000 pocket springs move independently, which means a partner getting up hours before you is less likely to wake you, and the extra width helps too.
- Extra length for taller sleepers: At 200cm, the UK king is 10cm longer than the UK double, a genuine relief if one of you is approaching six foot.
- Boxed delivery suits awkward homes: A 150cm-wide mattress is normally a struggle on narrow stairs, but this one arrives rolled and compressed, so one or two people can manage it.
- Budget price at a big size: King is where prices usually climb steeply, so a pocket sprung option at this level is unusual; compare the retailers listed on this page for the current price.
This size suits you if...
You share the bed every night and a double has started to feel cramped, especially if one of you is restless or keeps different hours. It also makes sense if either partner is tall, since the 200cm length removes the dangling-feet problem, or if you're expecting a baby and want room for pillows, propping and shifting position through the night.
Consider another size if...
Your bedroom can't comfortably take a 150 x 200cm bed; we suggest at least 2.7m x 2.9m for a UK king. If yours is tighter, we'd recommend the UK double instead, which needs around 2.6m x 2.8m.
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FAQ's
Does the komfi unity pocket 1000 come in a UK king?
Yes, and it's the biggest size available for this model. The range runs from small single up to king at 150 x 200cm, with no super king option. If you need 180cm of width you'll have to look at a different mattress entirely, as Komfi doesn't make this one any larger.
Will a UK king komfi unity fit up narrow stairs?
This is where the boxed format matters most. A rigid 150cm-wide mattress is genuinely difficult to get round tight landings, but the Unity Pocket 1000 arrives compressed and rolled, so it goes up stairs and through doorways like a large parcel rather than a mattress.
Is the king size worth it over the double for couples?
For most couples, yes. The UK king is 15cm wider and 10cm longer than the UK double, which means 75cm each for two people sharing. Combined with pocket springs that absorb movement individually, it's a meaningful upgrade if one of you tosses and turns or gets up early.
What room size do I need for this mattress in a king?
We suggest at least 2.7m x 2.9m, and that's our guidance rather than Komfi's. Measure with your wardrobes and drawers in place, as a new build master bedroom can feel tight once furniture goes in. If the numbers don't work, the UK double needs around 2.6m x 2.8m.
Is the king good for a tall sleeper?
It's the better choice of the range. Every smaller size of this mattress is 190cm long, while the UK king runs to 200cm, so anyone around six foot gains real legroom. If height is your main reason for upgrading, the length matters as much as the width here.