Open Box Akona Caicos Scuba Dive Snorkel FinThe Caicos fin features an extended sole plate for enhanced thrust and reduced foot strain. It offers a user friendly strap adjustment system and a comfortable contoured foot pocket. These fins can be used with or without booties and are made from high grade polypropylene material. The fin's directional channel in the middle improves propulsion efficiency, while the vent spaces on each side release excess water.