100% Flight Nylon: The B-15 Flight Jacket is constructed with a 100% mid-weight flight nylon shell. It also features a removable synthetic mouton fur collar and button tabs that were once used to secure oxygen masks and headset wires. Dry clean only. Bonus Features: This authentic flight jacket has a utility pocket on the sleeve with a signature red ribbon. There are also 2 lower welt pockets and 2 interior welt pockets. The shirred sleeves and knit rib cuffs and waistband give this jacket the authentic bomber look. Core Fit: This military-style jacket features a core fit. The waistband generally falls just above the hip. It has extra room in the body and sleeves, allowing for easier mobility and extra flexibility For Inclemental Weather: This bomber jacket features 100% polyester fill, ensuring warmth in inclement weather. The jacket is also water resistant, making it ideal for light rain or mild snow. About Alpha Industries: After being commissioned in 1959, Alpha Industries began designing and manufacturing jackets for the U.S. military, protecting soldiers, aviators and sailors from the harsh elements. Today, Alpha Industries has closely maintained the authentic design for civilian fashion, outfitting men and women to realize their potential.