I've only worn the shoe indoors twice for a total of 30 minutes. I was trying to break them in, when I was taking them off I noticed that the insert on the right shoe was coming off. I'm returning these, but already ordered a replacement. I love the shoe itself, I hope this is just a one-time defect.

Update: just received my second pair of shoes, straight out of the bag the insole is coming off of the heel. I have included another photo. These are two different pairs of heels with the same defect. Very disappointed. Whatever glue they're using does not adhere the insole to the physical shoe.