This vintage leather jacket is a USN G-1 flight jacket. It has a half-belt, bi-swing back, knit cuffs and waistband, button closure patch pockets with a pencil slot and a button throat latch on the underside of the collar. There is a patch for the Aircraft Owners and Pilots Association on the chest, attached by pinbacks rather than stitching.
Chest (pit to pit): 21″ (doubled = 42″)
Shoulder to shoulder: 19″
Sleeve (shoulder to end of knit): 24-1/2″
Length (base of collar to end of waistband): 24″