Not all La Plume shoes have this amount of thick padding in the soles, but the Nina does.  It's super comfortable (and easily adjustable to fit the width of your foot).  It was such a pleasure to switch from a pair of "normal" sandals to these while I was teaching summer school.  Could stand in these all day, and never feel sore.  Highly recommend.

Update: 1/2013

These shoes are still my go-to shoes for work.  Standing in these for 8+ hours a day causes absolutely no problems...these are probably my most comfortable pair of shoes.