500 PSI Mask Defog has always been one of the best selling mask defog solutions on the market.

500 PSI Mask Defog is a thick, gel type defog that usually lasts for multiple dives on a single application. 500 PSI Defog actually cleans your mask each time you use it to keep your vision crystal clear. This 500 PSI Defog cleans your mask every time you defog your mask!

500 PSI can be applied wet or dry to any type of diving or snorkeling mask. Each application lasts approximately 3 dives too! Non-toxic formula can be used with wet or dry application.

You can't see the fish if you're mask is fogged up! Comes with a Carabiner attached so its great for cliping on you bag.