Memory Foam or Pocket Sprung? An Honest Comparison
Memory foam vs pocket sprung deserves a clear, practical explanation. This is the first fork in mattress shopping and it gets framed as a rivalry, which it is not. Memory foam and pocket springs solve different problems. Pick by which problem you actually have.
The short answer. Memory foam wins on pressure relief and motion isolation. Pocket springs win on airflow, edge support and bounce. Hybrids give you most of both at a price premium, and for most people sharing a bed, a hybrid is the sensible default.
Memory foam vs pocket sprung: What each one is actually doing
Memory foam is viscoelastic — it softens under warmth and pressure and flows away from the load. That is why it conforms so precisely and why it holds heat. Pocket springs are individually wrapped coils that compress independently, so the surface follows your shape in a coarser way but lets air move freely through the gaps between them.
| Memory foam | Pocket sprung | Hybrid | |
|---|---|---|---|
| Pressure relief | Excellent | Good | Very good |
| Motion transfer | Excellent — barely any | Fair | Good |
| Temperature | Runs warm | Runs cool | Middle |
| Edge support | Weak — you roll off | Strong | Strong |
| Bounce / ease of moving | Low — feels like sinking | High | Medium |
| Typical lifespan | 7–10 years | 8–12 years | 8–10 years |
| Weight to move | Heavy | Heavy | Very heavy |
Who should pick foam
- Side sleepers who get shoulder or hip pressure on a firmer surface.
- Anyone sharing with a restless partner — foam absorbs movement better than anything else.
- People in flats with thin walls. Foam is silent; springs eventually are not.
- Anyone who runs cold at night.
Who should pick springs
- People who run hot, which is most people in a warm bedroom.
- Heavier sleepers, who compress foam comfort layers to the point where they stop working.
- Anyone who sits on the edge of the bed to dress — foam edges collapse.
- People who find the sinking feeling of foam claustrophobic. This is a real and common objection.
Hybrids, if you cannot choose
A pocket-sprung core with a foam comfort layer gives you the airflow and edge support of springs with most of the pressure relief of foam. The Sleep People carry a broad hybrid range across firmness levels, which makes it easier to match the spec to how you actually sleep.
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Things that matter more than the category
Within either type, quality varies enormously. A good foam mattress beats a cheap sprung one comfortably, and vice versa. Two specifics worth checking: foam density, where anything under about 45kg per cubic metre in the comfort layer will soften noticeably within a couple of years; and spring count, where the useful range for a UK double is roughly 1,000 to 2,000 — above that the marketing gets ahead of the engineering.
Try before you commit, properly
Fifteen minutes in a showroom tells you almost nothing, because you are self-conscious and wearing outdoor clothes. Online trial periods are the better test. Give any new mattress at least three weeks before deciding — the adjustment period is real, and plenty of people return a perfectly good mattress in week one.
If you sleep hot and share the bed
That combination is the hardest one to satisfy, and it is where Emma’s hybrid construction is aimed — springs for airflow, foam layers for motion isolation, with a long home trial so you can test it across a few weeks rather than a few minutes.
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