Mares Avanti Superchannel Full Foot Dive FinThe Avanti Superchannel FF diving fins have a blade length that varies from 32 to 37 cm depending on the size. The fins have a closed and orthopaedic foot pocket. The design and materials of the Avanti Superchannel FF diving fins make them ideal for recreational diving but also for snorkelling. The thermoplastic rubber foot pocket has an orthopaedic design that allows it to be used barefoot or with neoprene socks. The shape that wraps around the