So far so good!
My wife has been using these in a pair of shoes that was just sliiiiiiightly too loose for a couple months now and they're working great! They have stayed strongly attached to the shoe and they work super well at holding the shoe in place so the heel doesn't flop down when you walk. We used a second pair of these in one of my daughter's pair of dress shoes and they're working just as well there! Time will tell how long they stay attached, but I'm impressed so far!
Rating: 5 stars