Ordered the wrong lens replacements. sunglass fix have emailed me twice Explaining how to measure and order correct lens replacement. I have put it off but I am confident that when I do they will send me my replacement lens. Have used them before, I which all companies were as efficient. Recommend
Tough and light. Difficult to fit - start with the part of the lens near the nose piece and work out
Difficult to press into the frames but that is entirely due to the stiffness of the frame. Persevere and you will get a great result, lighter than the glass lenses that came with the glasses as well.