What do you like or dislike about swim fins?

Old zoomers hurt my feet. New Kiefer silicone fins do not!:applaud:

I forgot to mention that I have torn calf muscles wearing them as well. After they caused gastrocnemius, sacroiliac and lumbar issues, I deduced I am not physiologically designed to use them!

The only time I hate wearing fins is when I get toe cramps. It adds 2 times the pain if I use my feet.

I hate fins because they hurt my sacroiliac joint and lumber area. And I can kick really fast without them anyway.