JASON G Bought a Medium for a Womans 11 and Large for Mans 11-12. Great fit.
P D So do you think I need a small size fin for the ladies 9 shoe ?
Thanks for your help
JASON G talked to my mom who they were for and she recommended the medium. Felt small may to small. Room left in medium to tighten. Hope this helps. They're very pleased with the set.