Thank you for viewing. This is a SCUBAPRO rubber jet fin. ・Size: M ・Color: Black Used for about 10 dives. There is not much deterioration of the rubber, but there is some rust on the buckles. I have confirmed that the buckles on both fins open and close. Jet fins have their own preferences, but I think they are a powerful type that is easy to move with once you get used to them. I have stopped diving, so I would be happy if someone could use them. I will wrap them in bubble wrap and send them.