IHM-35-NAVY N1 Deck Jacket - Navy WhipcordIHM 35 NAV The N1 deck jacket was first issued to US Navy servicemen in the early 1940s. Much copied in the years since, this military classic has evolved to become a true style icon in its own right. The Iron Heart take on the N1 remains pretty true to those original jacketsif it ain't broke, don't fix itconstructed with a highly durable whipcord outer shell and a high density lining blended from sheep and alpaca wool. Of course, they have also given