Komfi Serenity Pocket 1000 Double Mattress in a Box
The Komfi Serenity Pocket 1000 Mattress in a Box combines individually sleeved pocket springs with a soft reflex foam top, which means a medium feel with less partner disturbance, delivered rolled up.
- Medium support for most sleepers
- Minimises partner disturbance
- Removable cover washes in the machine
£264.29
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Komfi Serenity Pocket 1000 Mattress in a Box
More available sizes
Mattress details
Mattress
Komfi Serenity Pocket 1000 Mattress in a Box
Size
Firmness
Medium
Construction
Foam
Pocket Spring
Rolled
Depth (cm)
20
Layers
2
Layer Details
Reflex foam
A soft, high density reflex foam that's hypo-allergenic. It gives a little cushioning on top of the springs, so the medium feel is softened at the surface.
Pocket spring core
Small diameter pocket springs, each housed in its own cloth sleeve. Because they move independently, they minimise partner disturbance and support you where you lie.
Layer details from archerssleepcentre.co.uk product page, October 2026.
Key benefits
- Room for two of average build: The UK double gives 67.5cm each for two people sharing, and the individually sleeved pocket springs help stop a restless partner's movement reaching your side.
- Leaves space around the bed: We suggest at least 2.6m x 2.8m for a UK double, while around 3m x 3m usually leaves comfortable room for bedside tables on both sides.
- Easier to get upstairs: Because it comes rolled in a box, the UK double can go round a tight bend in the stairs or across a small landing before you open it out in the bedroom.
- Bedding is easy to find: Double sheets and a 200 x 200cm double duvet fit, and the zipped cover machine washes, which is handy for a guest room that visiting couples use.
- Smaller footprint than a king: The UK double is 15cm narrower and 10cm shorter than the UK king, so a second bedroom keeps more floor for a wardrobe and drawers.
This size suits you if...
You share the bed with a partner and you're both of average build, your bedroom is at least 2.6m x 2.8m but would feel crowded with a UK king, or you're furnishing a guest room for couples who come to stay.
Consider another size if...
You and your partner like plenty of personal space or are on the tall side, since the UK double gives 7.5cm less each than the UK king. We'd recommend the UK king instead, allowing at least 2.7m x 2.9m.
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FAQ's
Is the Komfi Serenity Pocket 1000 UK double big enough for two people?
For most couples of average build, yes. The UK double gives 67.5cm each for two people sharing, and the pocket springs move independently, so you're less likely to feel a partner turning over. If either of you sprawls, the UK king gives 75cm each, which is 7.5cm more per person.
What size bedroom do I need for a Komfi Serenity Pocket 1000 UK double?
We suggest at least 2.6m x 2.8m for the UK double. That fits the bed with a little space to walk round it. If you want bedside tables on both sides plus a wardrobe, around 3m x 3m is the more comfortable norm.
Will the Komfi UK double mattress in a box fit up narrow stairs?
It arrives vacuum packed in a roll, so it's far easier to carry up a turning staircase or across a small new build landing than a flat mattress would be. Once unrolled it measures 135 x 190cm, so measure the stairs and the bedroom first, then compare the retailers listed on this page.
What bedding fits a Komfi Serenity Pocket 1000 in a UK double?
Standard double fitted sheets suit the 135 x 190cm surface, and a 200 x 200cm double duvet fits. The mattress is 20cm deep, so check that the fitted sheet's pocket depth covers that before you buy, particularly if you add a topper.
Should I choose the UK double or UK king Komfi Serenity Pocket 1000?
Go by the room first. The UK king is 15cm wider and 10cm longer, and we suggest at least 2.7m x 2.9m for it, compared with 2.6m x 2.8m for the UK double. If your room only just takes a king, the UK double leaves you more space to move around the bed.