how do you know what size fits you without trying it on in a store? like is the average male 55 mm?
I mentioned it earlier....but based on amazon reviews it seems like it all comes down to face size and personal preference. I tried to figure it out without going to a store but everyone's definition of an average male seems to be different. Some people said average male needs 55, some said 52. I stopped by a sunglass hut and tried both....and got a 55mm on amazon.