The classic N1 deck jacket was first produced for the US Navy in the early 1940s. Since then, copied a lot, it has become a true style icon piece. The Iron Heart version remains fairly faithful to the original jackets but with significant improvements in properties. A big, but unseen, change we made is an extra insert in the inner lining to increase wind resistance. The N-1 by Iron Heart is an absolute classic, goes perfectly with your 21 oz jeans and keeps you nice and warm.
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