How well does this hybrid isolate motion for couples?

Well enough for most couples. Motion isolation scores 8.5/10, landing low on its measured scale, because each of the 1000 pocketed coils compresses on its own so a partner's movement does not travel across the bed, and the memory foam dampens jolts at the contact point. Being a livelier hybrid with a thinner foam layer, it passes along slightly more bounce than a deep all-foam bed, but whatever motion starts settles within about a second.