How does this orthopedic mattress handle motion for couples?

This is the honest trade for its bounce. It scores 8.4, but we measured peak transfer at 8.58 m/s2, above its expected range, because the coils are helically tied and move as one connected unit rather than independently. A partner shifting carries across the surface more than on a wrapped-coil or foam bed. For a solo sleeper or a sound-sleeping couple it is fine; pair a restless partner with a light sleeper and you will feel the movement.