Scubapro Modular Fin System Full Foot Pocket (For Supernova / S-Tek)SCUBAPRO's innovative two piece design Modular Fin System, with blade and foot pocket molded separately, allows you to easily switch the foot pocket or blade for different types of diving. The Modular Fin System Full Foot Pocket can be paired with the Seawing Supernova or S Tek blades for diving without boots in warm water. Simply use the fins Socket Lock Connecting System to switch out the open heel foot pocket with a full foot pocket, reassemble,