These glasses work fine except for the temple pieces have this little piece of rubber at the tip that is prone to dislodging in hair or in a helmet strap. Aside from that glitch, these are excellent frames/lenses.
I am all for interchangeable lenses but these lenses fall out way to easy. Set them down on the counter upside down and pick them up without lenses. Put them on top of the head and have the lenses plink down beside you with others to remind you to collect the lenses. Sorry. Love the idea but the application doesn't work.