A bomber jacket is a leather or nylon jacket with two front pockets, sometimes with sheepskin lining, and a zippered front. The waist and cuffs may be made of elasticized material. The initial version was a heavy weight leather jacket, specifically designed for pilots who conducted bombing raids.
Calfskin however, is a tougher and thicker leather than lambskin, therefore better for handbags because the leather retains its shape more easily. Beyond the idea that lambskin is ultimately best for garments and calfskin for handbags, lambskin is also very insulative and protective, especially for its thiness.
The Field Mechanic Jacket by J.Crew is a modern take on the vintage field coat, offering a trimmer fit and a more modern look for everyday wear without sacrificing the features that made the original M-65 field jackets so great such as a foldable zip hood, flap pockets, and adjustable cuff tabs.
A flight jacket is a casual jacket that was originally created for military pilots and eventually became part of popular culture and apparel. It has evolved into various styles and silhouettes including the 'letterman' jacket and the fashionable 'bomber' jacket that is known today.