** 500 PSI Mask Defog is without question the clearest, longest acting and most effective defog on the market today!
** One application works for at least three dives in one day.
** Cleans your mask each time you use it. Wet or dry application, has the consistency of extra thick toothpaste, and when applied to the lens typically lasts all day long.
** 500-PSI Mask Defog comes in a 2 fl. oz.59 ml) bottle