After reading the reviews I decided to get a pair of these and work on the barefoot running technique. I am working up slowly, and you can absolutely feel the difference staying more on the ball of the foot than heel to toe style traditional running shoes force you into. I mixed about a 1/2 mile of running into a 2 mile distance (walking the remainder) and my calves are definitely feeling it.

I selected the size I have been ordering on a regular basis (13D) and they fit perfectly. Some reviews mention if you have a wide foot they might feel tight at the front, but I am not having that issue. Overall very pleased and looking forward to working with them through the summer.