The insole isn't the soft suede-like finish I remember in my past birkies.  It has a rougher finish and isn't as comfortable on my sensitive feet.  I wore them for about 2 hours and my feet are very irritated- like an allergic reaction to the insole; they feel almost raw.  I've worn Birkenstocks for around 25 years and this is a disappointment.  Otherwise, they fit fine.