DreamsSilentnight Sleep Harmony Support 3450 Mirapocket

  • Pocket sprung
  • Average warmth
£1,199Typical price
Test score

Sign up to unlock the full expert review

The Dreams Silentnight SleepHarmony Support 3450 Mirapocket mattress has a mini-pocket-spring core with a memory foam layer beneath the surface you sleep on. But what level of support does it give to your spine, and will it last for many years without sagging? To find out, we sent this mattress to the test lab. Read our full review to find out how it did.

pros

Content has been blurred out, please log in to view.

cons

Content has been blurred out, please log in to view.

What's included?

  • What is it?
  • What’s it like to lie on?
  • Is there anything else I should know?
  • Are Silentnight mattresses comfortable?
  • Is Silentnight a good brand?
  • Should I buy it?
KEY TEST RESULTS
Body support overall
Durability
Stability
  • Oct 2025Last checked by Which?
  • Oct 2025First reviewed by Which?
  • Jan 2025Released

Suggested Alternatives