The Avanti Quattro Power diving fins have a blade length that varies from 44 to 45.5 cm depending on the size. The fins have a closed and anatomical foot pocket. Soft longitudinal rubber inserts enable a controlled deformation of the blade while finning. The fin is soft and is ideal for both free diving and scuba diving. It provides good buoyancy and is therefore also suitable for diving in currents. The foot pocket is anatomically shaped and soft so it can also be worn without soft socks. Available from size 40 to 44 in black. The main features of the Avanti Quattro Power diving fins are: - Anatomical foot pocket - Rubber covered side ribs - 4 channels for increased thrust - Long blade, ideal for diving and free diving.