I bought these sandals early in the season. They were so cute and fit great just walking around the house. But the first time I wore them outside, I got blisters at the line where the toe and the innersole area meet. (You can see the line in the picture below the strap across the toes.) My feet got a little wet when we ran under an awning during a downpour and that line began to rub. I only walked only about 15 blocks total on flat city streets.  Afterward, I developed blisters the size of quarters on the balls of both feet. I have never had this happen before in any pair of shoes.