To echo Devin's comments, FJ are generously cut. I'm 6'5" 240, so I'm not exactly a small guy. I wear an XXL comfortably. My main compliment to FJ is that they don't forget that people are tall. In other brands the XXL may fit my chest, but the sleeves are too short or the body is so short, I can't tuck the shirt in without it popping out the first time I make a movement. Nor are their jackets so short that my sleeves or body are hanging out.
The same goes for their pants. I can't stand a breeze on my ankles because the pants were made for someone short. Men aren't supposed to wear capri pants. FJ realizes this and their pants fit properly, whether it's the Performance Pants or rain pants.