Looks like they changed the design from a couple years ago. These are inflexible and cumbersome compared to the last pair I had.

Let me put it this way: I used to be able to sprint in these and as I broke them in more, they became more flexible.
This new design is rigid, there is no breaking them in. They've also started to come apart at the toe, they don't handle frequent bouts of moisture well. On top of everything else, they're very uncomfortable. I used to have no problem with these, now I can't wait to change shoes after my shift and can literally feel the relief from taking these off.. Very unfortunate.