Atomic SplitFins have a flexible blade designed for ease and efficiency of kicking. A fin with short, soft blades will kick easier than a longer, stiffer one, but will require many more kicks to travel the same distance. A blade that is too stiff will require too much effort to kick comfortably. Atomic SplitFins were specifically designed to optimize all these variables, delivering high thrust, speed, and efficiency with a comfortable, low frequency kick cycle.
I got these fins because I recently had a knee surgery, and, needed something a little more gentle on my knees. I love these! I'm actually very powerful and fast in these!!