I use the original style, Badlands "Mag" binocular case, spray the whole thing down with tx-direct Nik wash spray, and be mindful to bend over slightly so your head blocks to the rain when you open it. I hunted all day long today in torrential downpours and my Razors stayed 100% fogless. The trick is making sure you don't use the bungy straps on the case. Remove the binos and close the flap while you glass. The full magnet is strong enough so you won't have to worry about the binos falling out. For the love of God do not put any anti fog products on quality glass. Ever. Period.