Was hoping someone had an ingenious solution. I carry a low volume backup mask in my exposure suit pocket when diving. If I start a dive with either my primary or backup mask ihave no problems but if I switch to backup mid dive it fogs badly. I have tried putting anti fog on it before stuffing in pocket to see if enough of it would stay on to prevent fogging to no avail.
aside from standard anti fogging treatments has anyone found a reliable way to prevent backup masks from fogging?
aside from standard anti fogging treatments has anyone found a reliable way to prevent backup masks from fogging?