Bomber jackets are designed to provide maximum mobility and warmth for pilots sitting in tight, uninsulated cockpits. Tailored fit to sit at the natural waist with a slightly looser, more voluminous fit through the chest and arms to allow freedom of movement. Closures is Secured with a front zipper. Cuffs and Hem are Ribbed, elasticated knit at the wrists and waist to trap body heat and block cold drafts. Collar is Usually a simple, clean, rounded collar, though some vintage models feature shearling or fur-lined collars.