This demonstration video discusses and shows the features of the Aeris Velocity X3 Adjustable Strap Scuba Fins. The Velocity X3 Fins have rigid battens and rubber flex channels within the blade that precisely control the shape of the blade during the fin stroke to optimize power and reduce drag. The Velocity X3 Fins uses the patented Nature´s Wing Propeller Fin Technology. A thumb loop makes it easy to adjust the fin strap and take the fins on or off. The fins feature ergonomically designed foot pockets which accommodate virtually all foot sizes and boot styles.