TECHNO-POLYMER BLADE Advanced material provides the strength of bone to maximize power, speed and efficiency, while being extremely lightweight and durable. POWER-X SYSTEM Revolutionary material acts as tendon and joint, optimizing propulsion by flexing during the downstroke and releasing stored energy prior to the upstroke. POWER CHANNEL The flexible material simulates the elasticity of skin by directing water flow off the back of the blade for increased thrust. SOFT-PAD HEEL STRAP, a comfortable and ergonomic finger-loop which allows the fin to be easily removed and replaced, even with thick neoprene gloves. EASY BUCKLE ADJUSTMENT (EBA) Our unique EBA buckle adjustment system allows for more than 2% (5 cm) of precise adjustments for a custom fit without tools. WINGLETS along the length of the blade increase efficiency and improve maneuverability.