Does this mattress isolate motion for couples?

Yes, motion isolation is exceptional at 9.6 out of 10, among the very best we measure. Two layers of independent springs do it: 4700 individually pocketed coils that each compress on their own, plus a separate micro-coil layer for finer, localized isolation. A partner rolling over or climbing in barely carries across the surface. For a deep, plush 16-inch build that you might expect to wobble, the dual-spring design keeps movement impressively contained for couples and light sleepers.