Sizing is messed up! I'm 6'1” tall, 203lbs, with a 42.5” chest, 37” natural waist, and 34.5” sleeve length (dress shirt measurement). So, I follow the size chart for the Chore Coat,
Carhartt Men's Relaxed Fit Duck Blanket Lined Detroit Jacket Work Utility Outerwear, Black, L : Amazon.com.au: Clothing, Shoes & Accessories