I have two binos (Canon's 15x50 IS and the smaller 10x30 IS) and while I have a controller and dew straps for my scope (made by Kendrick) I don't have anything for the binos. My recent experience with cold and humid evenings (~0C) was that the eye pieces were fogging first, due to the humidity from the very close eyes. I kept the binos inside my coat once in a while, but still, they were fogging too quickly and I had to take long breaks.
I haven't seen straps for binos and I'm a bit concerned of using the scope strap for the bino because the relatively tight wrapping on the sides (a scope has a gentler curve). I was thinking of getting perhaps the pad heater, putting it in a shoe-like box and keeping the entire bino there once in a while.
EDIT: just noticed the pad heater runs on 120V, so I meant the laptop heater on that page. The one problem with it, though, is that the bino would be horizontal so the glass would not be facing the heating source.
Any other recommendations?
Edited by RazvanUnderStars, 27 October 2020 - 09:09 AM.