The lense of my glasses popped out of the frame and hit the tiled floor of the bathroom and broke with the sickening tinkle of glass. I just recently started carrying my EDC pack to work and it includes my backup pair of glasses. Good thing as I am blind as a bat without them. Previously my spares lived in the glove box of my car. I put the damaged by still kinda servicable lense into the frames so I have some kind of backups until I get replacements. My computer work tool kit didn't have a small enough screw driver to tighten down the screws in the frame but the small combo screw driver in my EDC worked just fine. It felt great to have what I needed when I needed it.