Great fins for warm water snorkeling or SCUBA * Oceanic"s V-Flex strap fins that require NO boots * Sturdy side rails to channel the water & pre-bent design for a natural kick * Soft foot pocket with easy to adjust strap * XS/MD - Mens 6-9 & Ladies 7-9.5 or MD/XL - Mens 9-11 & Ladies 9.5-12