Iron Heart Oiled Whipcord N1 Deck Jacket - Black

An oiled version of the popular N1, designed to enhance water resistance. Due to the nature of whipcord and its resistance to absorption, the heavy oiling increases the fabric’s weight from the standard 12oz to approximately 14oz. For this season’s models, Iron Heart updated the oiling process in an effort to find a more eco-friendly method. Previously, they used fluorine in the process, a highly toxic chemical that poses serious environmental risks. Now, a fluorine-free coating replaces this hazardous substance with a double layer of oil. This achieves the same level of water repellency as before but results in a slightly waxier hand feel—making this the heftiest version of their N1 to date. 



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 jackets—“if it ain't broke, don't fix it”—constructed with a highly durable whipcord outer shell and a high-density lining blended from sheep and alpaca wool. They’ve also given the original design a few innovative upgrades, most notably a hidden chino interlining to enhance wind resistance and a heavy-duty two-way zipper concealed beneath the traditional buttoned storm placket. This creates a formidable winter jacket, seamlessly blending authentic WW2-era styling with modern performance and functionality.

• Made in Japan
• N1 deck jacket
• 12oz whipcord that becomes 14oz following oil application process
• Reactive dyed warp and weft - no colour loss to be expected
• Oiled with urethane/paraffin mix that results in a much softer hand feel to traditional waxed jackets
• Urethane/paraffin mix also reduced choke marks around elbow creases
• Can be ironed gently to renew waterproofing
• High density, long pile 80% wool, 20% alpaca lining
• Tonal lining
• Cotton chino cloth interlining for enhanced wind resistance
• Quilted satin lined sleeves
• Over-spec’d double action YKK zipper plus buttoned placket
• Two Permex snapped handwarmer pockets, lined with Alpaca wool and untreated whipcord
• One twill lined Permex snapped internal pocket
• Knitted storm cuffs
• Throat latch
• Internal olive drawstring hem
• IHM-37-BLK

Please note, this garment should not be washed or dry-cleaned - Iron Heart recommends only spot cleaning by hand.