The new Avanti X-3 Superchannel fins offer the latest evolution in Channel Thrust Technology, designed for the diver who wants the perfect blend of power and efficiency in one fin. The Avanti X-3 Superchannel fins feature a three-channel Superchannel blade design with a large central Superchannel and two traditional lateral channels to provide excellent thrust while maintaining hi-efficiency to reduce leg fatigue. They also feature an anatomical foot pocket, upper and lower stabilizers to help transfer energy from foot pocket to the blade and new ABS Plus buckles for easy adjusting.