I should have known better, since they are, after all, Crocs, but they looked more comfortable than they are.  There is little to no arch support or heel cushioning.  (I was hoping to replace my old pair of Traps, which have a nice arch and cushioned heel)  Thought they wouldn't aggravate my plantar fasciitis... they seem to be basically a slab of plastic that is only a bit softer than the floor.  I got them at a clearance price, so I don't mind donating them to Goodwill.