Maui Jim no longer offers replacement lenses for Twin Falls style. The Tajima-direct process was easy. I sent the prescription and frames to the Tajima-direct owner in southern California. He inspected the frames, sent the prescription with lens order to Japan where the lenses are made. The company in Japan sends the lenses back to Tajima-direct. Lenses are installed in the frames in California, and then shipped to the customer. (The customer does not pay tariffs since they are shipped from California.) My prescription is for single vision and the result is simply flawless. Jacob's communication was very clear and timely.