Chest is across pit 2 pit measurement, length is from top of collar to the bottom hem, sleeve is outer sleeve length, shoulder is from the shoulder point across just like chest. US Army Issued, Military Jacket, Made In USA, Name Patch, Button closer, Herringbone Twill, Patches on the front and sleeves, HBT Button down shirt, 1940's, Vintage 40's Button down. Inside stenciled in the collar.