Mattress Online Memory Zone 3000 Pocket Mattress
Mattress
Mattress Online Memory Zone 3000 Pocket Mattress
Size
Firmness
Medium Soft
Construction
Depth (cm)
28
Layers
3
Layer Details
- Memory Foam. Memory foam cradles to your shape, which means a cushioned, contouring feel rather than a springy one. The plush layers mould to your body to encourage correct spinal alignment.
- Pocket Springs. 2000 standard pocket springs and 1000 mini pocket springs work independently of each other, which means weight is distributed evenly and movement transfers less across the mattress.
- Foam Encapsulated Border. A foam wall around the springs firms up the edges. In practice, that means more usable sleep space and less of a roll-off feeling near the sides.
Layer details from mattressonline.co.uk product page, September 2026.
- Room to spread out alone: At 120cm wide you can starfish across the memory foam without hanging off the edge, which a UK single simply doesn't allow.
- Fits compact rooms: The UK small double is 15cm narrower than the UK double, which can be the difference between a door that opens and one that doesn't.
- Usable space right to the sides: The foam encapsulated border firms the edges, so on a narrower mattress like this you can sleep close to the side without a roll-off feeling.
- Copes with occasional sharing: The 3000 pocket springs work independently, so a partner staying the odd night won't jolt you awake with every turn.
- Standard 4ft sizing: The small double is a common UK size, so frames, fitted sheets and protectors are easy to find on the high street.
This size suits you if...
You sleep alone but have outgrown a UK single and like to shift about at night, your bedroom, box room or loft conversion can't take a full double without losing floor space, or you're furnishing a guest room where couples stay occasionally rather than nightly. The gentle, medium soft feel suits side sleepers who want cradling rather than pushback.
Consider another size if...
You share the bed every night, because 120cm is snug for two adults long term. We'd recommend the UK double instead, which gives 67.5cm each for two sharing; allow at least 2.6m x 2.8m of room for it.
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Is a small double Memory Zone 3000 big enough for a couple?
For occasional nights, yes. The independent pocket springs limit motion transfer and the foam encapsulated border keeps the edges usable, so two people can share comfortably now and then. For every night, 120cm across is tight for two adults, and we'd point couples towards the UK double or UK king instead.
What room size do I need for a small double mattress?
We suggest allowing at least 2.4m x 2.8m for the UK small double, which leaves space to walk round the bed and open drawers. That makes it a sensible pick for box rooms, studio flats and loft conversions where a UK double would leave no standing room beside the bed.
Is the Memory Zone 3000 small double a good upgrade from a single?
It's a natural next step. The UK small double is 30cm wider than a UK single but exactly the same length, so a teenager or adult moving up gains real stretching room without the bed eating much more floor space. The medium soft memory foam gives a gentler feel than most starter mattresses too.
What bedding fits the Memory Zone 3000 in a small double?
You'll need small double, or 4ft, fitted sheets to match the 120 x 190cm footprint, and a standard double duvet works well on top. It's a stocked UK size rather than a specialist one, so bedding is straightforward to find. Check the depth when buying sheets, as this mattress is 28cm deep.
Would this mattress work in a guest room or holiday let?
Well, yes. A UK small double handles the mix guest rooms see: solo visitors get generous space, and couples staying a night or two can share without complaint. Its narrower footprint also leaves room for luggage in a small second bedroom, which a UK double often wouldn't. The medium soft feel is a matter of taste.