What basic information is on a jacket sizes chart for men?

Men's jacket size charts typically include overarm, chest, waist and hip measurements. Necessary measurements vary depending on the style of jacket, with suit jackets and sport coats typically requiring more precise measurements than winter jackets and outerwear.

Suit jacket charts like those employed by Nordstrom and Belstaff require an overarm measurement taken around the widest part of the shoulders, a chest measurement taken under the armpits at the broadest part of the chest, a measurement of the natural waist and a measurement of the widest part of the hips. Most designers size and label suit jackets according to chest measurement as well as jacket length.