I bought these shoes because my old ones were really worn out. Broke them in like you're suppose to before trying to run in them. When I was walking around in them they felt fine enough. When I tried to run I noticed the back rubbed my ankle raw, and that there wasn't sufficent arch support for me. (I have crazy high arches). I ended up injuring myself and couldn't run for 3 weeks. I went back to my ol' reliable worn out shoes.