Hello everyone, Today I tried the half jacket 2.0 XL black polished frame and suits me very well. Is the flak jacket frame shape exactly the same except the arms or is there difference ? Also what about the lenses shape? The polished black frame of half jacket looks also in my eyes more formal than flak jacket which isote sporty or am I wrong? I was ready to order blind the flak jacket xlj but now after tried the half jacket 2.0 I am very comfused..