I bought these for my pair of &#34;The Don&#34; sunglasses made by Smith. Smith no longer makes these glasses so I'm desperate to find lenses to keep the frames going as long as possible.  They're my favorite and have been wearing them for six years...<br /><br />This is the second pair of replacement lenses I've bought.  The first pair was bought from a company on Amazon in October 2013 and they were an exact replica of the og's.  Same darkness, polarization, fit in the frame, etc. I should have bought ten.  Unfortunately, that company can no longer be found on Amazon or the web. Huge bummer!<br /><br />Those lenses lasted exactly a year before I needed new ones. I was thankful to find this company was now selling them and purchased this companies lenses in October 2014. I was happy when they arrived, they fit perfect. But that's where the joy ends.<br /><br />These lenses aren't nearly as dark as the og's and the first replacement pairs amber lenses which is the biggest downside for me. My eyes are very sensitive to light and I noticed the moment I put them on. I also compared them to the others and it was obvious.  They also scratch much easier.<br /><br />Overall disappointed. Unfortunately, I think I have to find a new pair of glasses.