http://www.ebay.com/itm/281141046168
This coat is a recent reproduction of a style of Mackinaw coat which was popular from the early 1910s through to the 1930s. This style of coat started out with lumberjacks in the pacific northwest at the turn of the century. It broke into mainstream fashion starting around 1912, and was quickly adopted by the collegiate crowd. Workmen and railroad men quickly saw the practicality of its collar and short length and adopted the style.

This reproduction is made of heavyweight black herringbone knit cotton, with a fleeced backing. Like many originals, it is unlined, but the fleeced interior of the fabric makes for a very comfortable jacket. It has a broad shawl collar, and four flapped patch pockets. It is single breasted. There are button adjusters at the wrists.

Chest (pit to pit): 21″
Shoulder to shoulder: 17″
Sleeve (shoulder to cuff): 24-1/2″
Length: 29″