It seems to work well, but note that the arms are not springy to fit any cup and then tuck back into place when cup is removed. Adjusting the arms is a manual process that retains the setting and can be a little tricky if you have physical limitations in your hands. The arms, when adjusted beyond the narrow end of their range, prevent the cup holder from folding up. It's not as simple as removing your cup and folding it up for mugs and larger cups which presented some challenges for my mother in law. Other than usability issues it seems like a solid product for the right person, just not for us.
Rating:
[3 of 5 Stars!]