It sticks firmly to smooth surfaces, which is good; but if it is set
on a surface containing crumbs of food etc., it will pick these up
and no longer stick. But it works again after being washed off.
It comes with a circle of plastic film on its bottom, which nicely
keeps it from sticking to places where it is stored etc.; but
being colorless and transparent, the circle is easily lost; it
would be better if it were colored.
It was recommended by a doctor for use by my disabled wife (this
is her husband filling out the questionnaire in her name), but it is
designed for little children, and much too small for an adult's meal.
But we are using it for her snacks and desserts.