"Bad design: I wore these approx 5 times. While walking one day, the bit came apart in the middle. I refastened it and it kept coming apart. At home, I noticed it had split and fallen off completely (prob on the sidewalk) on one side, leaving me with a 1/2 bit on that shoe. Obviously can't wear them with a 1/2 bit on one shoe. They still look brand new, but are now worthless."