The level of motion transfer is documented in the video below.
Overall, the Saatva has moderate levels of motion transfer.
These levels are going to be higher than what you’d typically see with a memory foam mattress, but not as high as traditional innerspring (due to the thick euro-style pillowtop layer).
Our accelerometer tests measured a total acceleration range of 5.86 m/s², which is essentially average compared to all mattresses we’ve tested to date. Our average acceleration range is 5.87 m/s². That said, being average is still great in this case of motion transfer.