100% nylon water repellent outer shell. Logo slightly out of place. Air Force style replica jacket. Unisex. Fully reversible rescue orange nylon lining. Polyester fiberfill lining. Zippered utility pocket with pencil pocket on left arm (zipper has leather tab). Ribbed knit collar, cuffs and waistband. Front double pull zipper with leather taps. Two front slash pockets with snap down flaps. Two inside slash pockets with snap closure. Gold color embroidery on front left chest indicating branch of service. 10" (inches) embroidered 5 color US Army logo sewn on back. What makes them irregular? Slight shading or slight fabric imperfections. Black - MA-1 Flight Jacket w/US Army Emblem IR.