The arms just don't stay up when rolling the walker (I can imagine how it would function if it were on an walker w/out wheels. There's just too much play in the arms and the notches aren't tight enough to keep the arms in place. Not sure we'll keep this, may opt for a (non-mechanical) unit that fits over the top of the bars and can be lifted off when not in use. The drawback to those units are that the individual cannot step into the walker, but must reach over it to get items they're needing. I think the engineers can do much better.
