I have a pair of Silverfish glasses that I am quite satisfied with. Not much fogging when the air and water temps are warmer. Come Winter, even with using Silverfishes' cleaner / anti fogging stuff the fog problem became problematic. A friend of mine who dives told me to try what divers do; get the glasses wet, spit on the inside part of the lens, rub the spit around and put your glasses back on. No more fogging. Reapply spittle as required.
I have a pair of Silverfish glasses that I am quite satisfied with. Not much fogging when the air and water temps are warmer. Come Winter, even with using Silverfishes' cleaner / anti fogging stuff the fog problem became problematic. A friend of mine who dives told me to try what divers do; get the glasses wet, spit on the inside part of the lens, rub the spit around and put your glasses back on. No more fogging. Reapply spittle as required.