I love these sun glasses !  But, there are a few issues I have.  I am on my third pair of these glasses and two of the three have broken (cracked) at the top screw area.  There is a very small area of plastic lens between the top screws and the edge of the lens.  Two pair of my glasses have crack between the screw, which secures it to the frame, and the edge of the lens !  I think this is just an oversight in making these glasses because this area is just not strong enough, especially when you clean the lens !  The other issue is more user error, but boy .... the lens scratch really easy !  It doesn't take much to chip or scratch these nice glasses !  Just a few things to consider !!  I must say the first time I returned them by mail, Maui Jim fixed and replaced both lens .... Free of charge !!  I love a company that stands behind its product !