What's in the box: 500-PSI Mask Defog
500 PSI Mask Defog is without question the Clearest, Longest Acting and Most Effective Defog on the market. 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 2 or 4 fl oz (59 or 60 ml) size with a 2 fl oz (30 ml) available with a Carabiner Clip.