http://www.ebay.com/itm/271490626752
This vintage coat was made in the United Kingdom by Maxproof. It is made of heavy, waterproof waxed canvas. While it is single breasted, it has a double row of buttons, and double set of flaps to keep all water and wind out when riding your motorcycle in the rain. It has a side collar and throat latch / chinstrap which close the neck up equally as securely. The wrists can be cinched down with buttoned belts, and the length is long enough to keep you dry. There are three eyelets at each underarm for ventilation, and a rear vent.

Chest (pit to pit): 25″ (doubled = 50″)
Shoulder to shoulder: 21″
Sleeve (shoulder to cuff): 24″
Length (base of collar to hem): 34″