If you have a BRP Bombardier BV2S Modular Helmet and have experienced difficulty with fogging, BRP has answers for you.
Seems some owners attempted to use filters from the original Modular Helmet (they don’t work, Bucko) and others didn’t follow directions carefully when assembling and putting the helmet on their melons.
Talk to your Ski-Doo BRP dealer and they’ll get you in the loop.