The N-1 jacket was released in the mid-1940s and includes a three-piece set of jacket, pants, and hat, all made from the same fabric. It was specifically designed for sailors to use on ships, commonly known as the DECK JACKET. The surface is made of a durable cotton satin material, while the interior is lined with woven alpaca or wool.The first generation N-1 was a blue version with no words on the front and printed US.NAVY on the back, quickly replaced by khaki green in early 1944. Following the second generation N-1, the cuffs were removed and the US.NAVY letters on the back were changed to USN printed on the front chest. The final version was the third generation, which also removed the underarm gun strap, ending distribution in the early 1960s. Surface texture: Surface JUNGLE CSS 11.5oz Lining: Customized lamb wool cashmere + polyester thickened fleece Tailoring: Slim Fit Item Description: A N-1 Hooded Style, with a thickened JUNGLE CSS cotton woven satin fabric on the surface, which is a special fabric of the N-1 series with slight water-repellent properties. The interior is made of custom lamb wool cashmere + polyester, which has the advantage of not shedding, softer touch, good warmth retention, affordable price, and machine washable without requiring your meticulous care.Made with YKK zippers and blended wool-acrylic ribbed cuffs.Domestic hem drawstring, domestic core-spun yarn sewing.