QUATTROS are great for diving in current with little effort required, but I do have a problem with them only lasting 9 to11 months before they split. Have tried Vollas which bent alot more and cracked after thirty dives., Force fins which seem to be like the Emperors new clothes, Jet fins that gave me cramp ,Cressi Frogs that snapped off in front of the foot pocket and Turtles that seem to want to kick sideways all the time. So for now I always have a spare pair of Quattros and keep changing the springs
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