I love these things. My daughter (who's in the medical field)turned me on to these. She, as do I, has a need for arch support because they're so high. She also knew my arches has been falling due to age (I'm in my late forties)and I need inserts in my work shoes. She's been wearing her pair since last fall (2006) and picked me up some of the Croc "glides?" in March.
I liked them so much I ordered these Caymans for myself. Amazing support for "difficult" feet. I wear them whenever I'm not in my work shoes. I may look somewhat foolish (they're marketed at a much lower age bracket than myself), but I'm comfortable so I don't care.