As usual, reviews are written by individuals that don’t understand what size should truly be. I’m 5’11 and 155lbs. I wear a medium in all shirts and jackets. Reviews and Ebay suggestions say to by a size bigger. This is a misconception of size, unfortunately. This is a medium and there is plenty of wiggle room. So much that I’ll be getting a small next time to be more ‘fitted’. Nice feel to the fabric and it’s a beautiful color. Will purchase more