Built with a spaceage Monprene® elastomer that is virtually indestructible. Proprietary G4 articulated joint allows the entire blade to pivot and generate thrust. Wing-shaped blade creates a near-perfect balance of stiffness and flex. Variable Blade Geometry wing tips arc upwards, providing more power and increasing stability. Pivot Control technology ensures that the most efficient 45-degree angle of attack is maintained no matter how easy or hard you kick. Marine-grade bungee strap is self-adjusting, comfortable, extremely durable, and makes easy work of donning and doffing the fin. Re-engineered footplate with co-molded Grip Pads provides improved non-skid grip on wet surfaces.