Dealing with Tajima for replacing the lenses on my HardCore Kaenon's was a breeze. Online just fill out the form with your lense choice, ask for a box, put glasses in box, slap on new included shipping label, ship free, and in very short order my Kaenon's were back on my head. Tajima was in Email contact with me during the entire process which was very reassuring. Fit and shape wise my glasses are as snug and wrap around as they were new. The new lenses are just like having a brand new pair of Kaenon's, great clarity, distortion free, and great polarization. Thanks,,,