The N-1 Deck Jacket was originally introduced to all US Navy personnel in the early 1940's during WW2. N-1 refers to an integrated clothing system designed for protection in cold climates. Lined with Alpaca fur, the N-1 became the most durable, practical and warm jacket to protect the U.S. Navy from harsh conditions. The N-1 features a Storm Flap Cover and 1940's bell-shaped Talon zippers. An iconic jacket faithfully reproduced by the The Real McCoy's in Japan.