Dude, Theyre snowboarding googles
Your on frozen water, has nothing to do with high humidity in your country.
Maybe you got a dud set of googles...
This just shows your ignorance. The OP lives in Hong Kong where it is hot and extremely humid for a good chunk of the year. Lots of plastic products degrade very quickly here. This is especially true for items meant for different conditions/temperature ranges like, guess what, snowboard goggles.