Hall CPO Overshirt - Olive TweedThe Hall CPO Overshirt from Imogene + Willie is inspired by Chief Petty Officers of the US Navy and Coast Guard who traditionally wore a similar style in the 1930s when the shirt jacket was first developed. This heavyweight overshirt is sturdy enough to wear as a piece of outerwear on colder days, albeit still light enough to layer with a warmer jacket. Made out of a warm Japanese wool blend. Inspired by CPO shirts from the 1930s Each shirt is