Aqua Lung Slingshot Power FinsSlingshot Power Fins A highly versatile fin, the SlingShot allows divers to frequent a wide range of conditions, from diving in cold water with thick exposure suits and heavier gear to cruising warm water reefs with minimal equipment. Silicone Power Bands and a Three Speed Gear Shift allow divers to dial in the best speed to effort ratio and match the SlingShot to changing dive conditions and their own leg strength. Features: Pure silicone Power Bands