You've seen the pictures; they turn flat. Now place it under the bedsheet. As for two people, one can either place horizontally or buy two. My grandparents had one each. After nano passed away, one has been set for nanaji's upper body and the other, for his feet.
@sj, my grandparents got from the US a good twenty years ago too. They're still working great. Good to know we have a friend here providing them :thumbup:.
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