Replying to Tough Frames for Glasses

Anybody have any experience with any frames for glasses that are tougher than the normal ones being sold at stores? I'm traveling pretty regularly, and I need a frame that can keep up with the tough terrain that I explore.

I lost a pair of my glasses in the mountains of Glacier National Park, when I really needed them (grizzly bear encounter that was WAY too fucking close for comfort). They fell out of my pocket when I slipped down a switch back when the snow got a little slick. A mile later I realized that there were bears in the area after I noticed a posted warning sign, but I was unable to make out details in the distance. I'll be investing in those strap things (can't remember what they're called?).

So if anyone has any information on outdoor brand frames I could look into, that would be dope. My insurance allows me to get new glasses once a year free of charge, so price isn't a concern.

Thanks, y'all.