I have a decent pair of Japanese Tasco 7-35 porro prism binoculars.
Will keeping them in my truck out of direct sunlight destroy them? They will be an a zippered bag to keep dust out. Temps here can reach 100F, but normal highs are 90-95F. It doesn't get below zero in the winter.
I have other binos, but they cost $150-200 and I plan to leave them home unless I know I will use them.
Andy