The Palau Short Adjustable Fin (SAF) opens the way for a new type of snorkeling and swimming fin. It has been designed for two specific purposes. The first was to have a foot pocket that could easily adapt to at least three or four consecutive foot sizes. This would enable the same fin to be used by all the members of a family, or by a group of friends. It would also make it great for rentals in a diving center or on a charter boat, without requiring an infinite number of sizes.