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.
Measurements are specific to the product displayed on this page. The best way to determine your size is to measure a similar item that fits you well using the method shown in the "How we Measure" tab and compare with the size chart. Note that Iron Heart items of the same size can vary slightly. If a specific dimension (for example, arm length) is important to you, please ask us to check this by adding a note to your order.