Fin Keepers help prevent fin sores, eliminate noise generated by fins, and help secure when using oversized fins. Neptonics Fin Keepers are designed to fit over a pair of full-foot fins and hold them firmly in place. They are simply placed over the foot and around the back of the fin.
PERFORMANCE - If you are between sizes and your foot pockets are slightly loose, these fin keepers will snug them up. Creating a good fit is important in making your fins perform their best. If you have a loose foot pocket, then you are not getting 100% energy transfer and you'll have to work harder to maintain speed.
OPTIONS - You will notice your foot pockets are loose if you switch from wearing thicker booties to thinner booties or no booties at all as the water warms up throughout the year. Fin keepers are the easiest way to compensate for the extra gap in your foot pockets as you change booties. With fin keepers, you will always have a snug fit.
SAFETY - If you dive in areas with larger shore break and rough water, then a pair of fin keepers will make sure your fins don't get knocked off as you enter, exit, and dive these tougher conditions.