The HUNTER design is based on channel propulsion technology. It features two side channels and a larger central one, which maximize water channeling and movement, resulting in greater thrust power with minimal effort compared to other fins of the same size. It also features rubber-reinforced ribs and two holes on the top of the blade to relieve water pressure during movement. Its ergonomically designed closed sole is made of soft thermoplastic rubber offering the greatest possible performance, comfort and durability. PVC packaging bag