I mean 5 for $200 @ outlet store. Samurai is a weird cut. You mentioned you are slim build, I am also skinny 5'9.5" , under 55kg and MJB SS 37 works well for me. I could make the existing darts deeper. But I am quite happy with how it is. It's actually best fitting OTR shirt. I have wide shoulders and long arms- most OTR shirt at 37 don't have my sleeve length.