How well does this memory foam mattress isolate motion for couples?

Well. It scores 8.2 for motion isolation, landing at the quiet end of the field, because the memory layer over a dense foam core swallows movement at the source and there are no springs to carry a partner shift across the bed. Transferred motion measures as low as 1.04 on the meter scale. If you share with a restless partner, or a dog that reorganizes all night, this construction lets you sleep through it.