Mattress Online Memory Zone 3000 Pocket Double Mattress
The Memory Zone 3000 Pocket is a hybrid mattress from Mattress Online, combining memory foam with 3000 pocket springs (2000 standard plus 1000 mini) in a 28cm deep design.
- Pressure relief for side sleepers
- Usable sleep space to the edge
- 100-night trial & 5-year guarantee
£424
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Mattress Online Memory Zone 3000 Pocket Mattress
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Mattress details
Mattress
Mattress Online Memory Zone 3000 Pocket Mattress
Size
Firmness
Medium Soft
Construction
Foam
Pocket Spring
Hybrid
Memory Foam
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.
Key benefits
- Edge-to-edge space for two: The foam encapsulated border firms the sides, which means the sleeper nearest the edge can use their share of the 135cm width without a roll-off feeling.
- Less partner disturbance at this width: With 67.5cm each for two people sharing, the independent pocket springs matter more, spreading weight so you feel less of your partner's movement close beside you.
- Fits the typical UK bedroom: We suggest at least 2.6m x 2.8m, which most doubles-era British bedrooms meet with room left for bedside tables on both sides.
- Easy to dress: Standard double sheets and a 200 x 200cm duvet fit, all stocked everywhere at every price, useful if you're kitting out a first flat on a stretched budget.
- A gentle feel for guest rooms: The medium soft, pressure-relieving surface suits a spare room that hosts visiting couples, since a cradling feel pleases more body types than a firm one.
This size suits you if...
You share the bed every night and your bedroom sits around the typical UK size, where a UK king would crowd the walkways. It also suits you if you're furnishing a first flat or a guest room for visiting couples, or you sleep alone and want space to spread out, perhaps with a dog or cat claiming a corner.
Consider another size if...
You and your partner both like room to stretch, or one of you sleeps restlessly. The UK king gives 75cm each rather than 67.5cm; allow at least 2.7m x 2.9m of floor space for it.
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FAQ's
Is the Memory Zone 3000 double big enough for a couple?
Yes, for most. At 135 x 190cm you each get 67.5cm of width, and the foam encapsulated border means all of it is usable rather than the edges feeling unstable. The pocket springs also limit how much movement crosses the bed. Taller or restless couples may prefer the UK king, which adds 15cm of width and 10cm of length.
What room size do I need for the Memory Zone 3000 in a UK double?
We suggest at least 2.6m x 2.8m, with around 3m x 3m the comfortable norm. That leaves space to open a wardrobe and fit bedside tables on both sides, which is often the deciding detail in a typical UK bedroom. This guidance is ours, not the manufacturer's, so measure your own walkways before ordering.
Should I choose the Memory Zone 3000 in a double or a king?
It comes down to floor space against sleeping space. The UK double is 15cm narrower and 10cm shorter than the UK king, so two sharing the UK king get 7.5cm more each. If your room meets our suggested 2.7m x 2.9m for the UK king and you share nightly, size up. If not, the UK double is the sensible call.
Does the softer feel work at double width for two sharing?
Broadly, yes. The medium soft memory foam cradles each of you individually while the 3000 pocket springs spread weight evenly, so lying closer together transfers less motion than you might expect. Two heavier sleepers sharing 135cm may sink more than they'd like, though, and could find a firmer mattress a better match.
Would a UK double suit a guest room instead of a small double?
If visiting couples are the priority, yes. The UK double is 15cm wider than the UK small double at the same length, and that extra width makes sharing noticeably easier for adults. The gentler feel of this mattress also suits occasional guests. If the room is tight, we suggest at least 2.4m x 2.8m for the UK small double.