Used Mares Plana Avanti Tre Full Foot FinsThe Avanti Tre diving fins have a blade length that varies from 31 to 37. 5 cm depending on the size. The fins have a closed, orthopedic shoe. The design and construction materials of the Avanti Tre diving fins make them ideal for recreational diving but also for snorkeling in warm waters. The thermoplastic rubber foot pocket has an orthopedic design that allows it to be used barefoot or with neoprene socks. The shape that wraps around the instep and