Heavy Rubberized Open Heel Dive Fins "M"

Pre-owned Heavy Rubberized Open Heel Dive Fins size Medium.  There isn't a brand name on the fins, only "Made in Taiwan".  They are made with the thicker rubber similar to the XS Scuba Turtle Fins and the older ScubaPro Jet Fins.  They are shaped to displace water for quick movements, as opposed to swimming long distances.