They are made of very flimsy plastic. Of course I wasn't expecting high quality due to the price but I at least thought they would last until I wore them for the first time. Nope! I pulled them from the plastic wrapper and one lense wasn't attached to the frame. It was still in the plastic. I eventually was able to pop it back in, but Im pretty sure itll be popping out again in the future. Sending them back isn't worth the hassle. Ill just keep them but Im definitely buying a pair of better quality. So that I can actually wear them without the fear of the lense popping out.