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Absolutely Beautiful, supplements, natural rubber after all these years.  The fins have not hardened, so stress marks, no chips, no cracking  NOTHING.  ESPECIALLY SOFT STEP IN AND HELL.  SMOOTH. 4 UN- RUSTED Buckles amazingly. Ready to tale whichever is you prefferred strap.  Treated several times over the years. Mares Box not included. Sorry about the distinct shadows during pics. Additional pics with measurements included  Gigante size 11-13. Made in Italy.

The Italian Luigi Ferraro found the early fins were very hard on the divers feet during his war time attacks which were classified as secret weapons so after the war when he was working for the "Cressi" company took out a patent for the "Rondine (swallow) design which proved kinder to the feet.In 1962 Luigi went on to form the Italian company "Technisub". I am in debt to Gaetano Nini Cafiero of the Historical Diving Society Italy for these facts.

After the war was over, Luigi Ferraro was purged for having joined the Social Republic and therefore lost his status as an Armed Officer and a PE teacher. However, thanks to his skills, he found work as a diver in 1946 in a firm that dealt with maritime recoveries. His role was to inspect the relics of interest to the company in advance. The following year, he modified a rebreather so that he could employ it with air and with an open circuit, and he used it to dive to a depth of 70 metres to collect sponges. Consequently, he met Egidio Cressi and started working for his new diving firm. This would become his profession. In the years that followed, he proposed various initiatives in order to increase awareness of underwater activities, yet never for personal profit. Others developed his ideas, expanded them and turned them into thriving industries.

it's true to say that the Cressi Rondine design has been endlessly copied over the decades, right down to the swallow embossed on the foot pocket and blade. When I joined my university scuba club in the mid-1960s, I purchased my first "professional fins", which were Typhoon Cressi Rondines, also bearing the swallow image. They were so comfortable for snorkelling that I resolved never to revert to open-heel fins and I still, forty years later, go snorkelling in the North Sea in a pair of all-rubber full-foots. It's sad that Cressi no longer makes full-foot fins from natural rubber nowadays, having jumped on to the thermoplastics bandwagon a while ago like most other European scuba gear manufacturers. Only Oceanways of America and Glaros of Greece are left in the all-rubber Cressi Rondine business.

Luigi Ferraro did indeed come up with the original Cressi Rondine fins in the late 1940s.  However, their success was especially due to their fitting solution: a small shoe made of soft rubber, which accommodates the whole foot. It guarantees maximum comfort, merging the foot and the fin into one.

All contemporary full foot pocket fins derive from the ergonomic principles Ferraro applied to the Rondine fin