How well does it isolate a partner's movement?

Very well, at 9.0 out of 10 for motion isolation. Each of the 2,400 coils is individually pocketed, and the plush comfort layers plus a micro-coil tier further dampen movement, so a partner shifting or getting out of bed barely registers on your side. The soft, deep feel actually helps absorb motion. For couples where one person is a restless sleeper, this Springwall pillow-top keeps the other side calm.

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