Atomic Aquatics Open Heel FinAtomic Aquatics Open Heel Fin employs Propeller Fin technology with a flexible split blade to reduce drag and increase forward propulsion. With the slightest kick, the blade deflects to form wings that slice through water more efficiently, helping scuba gear and diving sessions feel smoother and more comfortable underwater. Designed for open heel setups, these fins pair with standard dive boots and deliver efficient propulsion with less effort for