I therefore can not run (almost)

Maybe I'm doing something wrong, but the Flip Flops I'm personally saumäßig between your toes hurt.
When standing, sitting or slow running sandals are still ok. Will you then the pace a little
increase or going downhill, then the Flip Flops encounters uncomfortable in the foot.
I do not think you can do much wrong in the use of such shoes.
To sit on the terrace in summer ..sicherlich funny.
To order in the summer to go to the supermarket or even to go a little more or faster ... for me not
useful.
Too bad, because the build quality does not look so bad.