So I picked up a pair of half jacket 2.0's tonight off a co-worker. Got home and started cleaning them and found that one lens, the right one in particular, pops out very easily and feels loose in the frame. It will even pop out when cleaning it with a cloth. Compared it to the other lens and the tabs where it seats into the frame look OK. Anyone else had this problem? Could it be just a bad lens? What do you think?