What do you like or dislike about swim fins?

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!

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!