Updating my prior post
regarding the Pinlock anti-fog visor/face shield system: Pinlock now sells the inserts (but not the shields) direct thru its website
; the Pinlock Max shield for Arai helmets seems to have disappeared before it even hit the US market; and, it appears Pinlock is agreeing with popular perception
of many users who've posted on online forums that after a year or so the insert's performance will degrade (mine began fogging up at the bottom center during its 2nd winter; today I ordered a new one from Motorcyclecloseouts
), so the Pinlock is obviously an expensive anti-fog solution, albeit one which remains worth the expense to me.