The sizing here was accurate and the materials are quality. The issue is that the material is so inflexible, I really have not been able to wear them. I originally took them to my office to wear to break in, but the material is so inflexible I still do not feel that they are broken in (a year after owning) and am afraid that if I walk any further than desk-bathroom I'll end up with a painful and potentially bloody blister on my heel. I really wanted to like these, but the blister factor is just too high.