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Following in a long tradition of excellent full foot fins the Mares Avanti superchannel full foot fins are the latest evolution in channel thrust technology. Avanti Superchannel is designed for the diver or snorkeller who wants the perfect blend of power and efficiency in one fin. These full foot fins can be worn with barefeet, for a more comfortable and warmer dive you can wear the Fourth Element Finsock which reduce the chance of blisters, allergic reactions, cutting feet entering/exiting the water and having cold feet when you're in the water. Features - Three-Channel Superchannel Blade- Selected Technopolymers, Forsuperior Performance- Rugged, Durable Construction- The new blade design with a large central Superchannel and two traditional lateral channels provide excellent thrust while maintaining hi-efficiency to reduce leg fatigue- The blade is constructed of Tecralene and Thermoplastic rubber for extended durability- Orthopedic foot pocket with variable thicknesses provide superior comfort.