Not as comfortable as I expected.  Maybe I have a high instep, but this cuts into the top of my foot a bit.  I wore these around the house for a few days when I first got them with socks, too, to break them in before a trip where I expected to walk quite a bit.  I also bought a pair of Jambu Mary Janes.  I have several pairs of Jambus, and they are more comfortable out of the box.  I ended up wearing the other shoes more. The sole appears very substantial.  These shoes will last quite a while.