I got frustrated because I can't hold a pencil behind my ear with safety glasses on. I now wear safety glass 100% off the time in the shop because I've had so much **** get in my eyes over the years. Pulling wood or metal splinters out of your eye ball *****. I looked online for safety glasses with a pencil holder, but there is only a giant clip and some stuff where you need a 3d printer to make. I broke the end of a pen cap and super glued it to the glasses. Works perfect, just as easy as your ear with no glasses on.

