Used Atomic Aquatics Full Foot FinFULL FOOT SPLITFIN KICKING EASE & EFFICIENCY Aerodynamic, Hydrodynamic, Simply Dynamic Not all Split Fins are the same. Atomic Split Fins have a flexible blade designed with Propeller Fin technology so kicks feel very easy and slice through the water with very little drag. Even fish envy Split Fins when divers efficiently swim with more propulsion and less effort. And that means less air consumption.