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Iron Heart 37-BLK - N1 Deck Jacket - 14oz Oiled Black Whipcord & Alpaca Lined
Iron Heart 37-BLK - N1 Deck Jacket - 14oz Oiled Black Whipcord & Alpaca Lined

Iron Heart

37-BLK - N1 Deck Jacket - 14oz Oiled Black Whipcord & Alpaca Lined


Garment Measurements | Virtual Size Chart


The Iron Heart IHM-37-BLK N1 Deck Jacket is an improved, modern version of the old-school military original produced in a 14 oz. heavy-duty Whipcord twill that has been sulfur dyed in Black, which will patina over time with a water-resistant, oiled finish and is lined with a brown Alpaca Wool blend for warmth and luxurious comfort. This winter weather, war-ready piece with new vintage appeal is an elevated reproduction based on the WWII Naval Jacket that debuted on the beachheads of Normandy and remained in use by Naval deck and officer personnel for several decades. This Whipcord is fashioned after military-grade fabrics made from hearty cotton in a hard twisted yarn that's woven into a twill to create a corded ribbing effect while adding durability, further enhanced with a mixture of urethane and paraffin oil, creating a water-resistant fabric with a dry waxed feel and vintage hand that will evolve subtly with the heavy use this piece is intended to endure. This specialized N1 Deck Jacket has an interlining to add wind and water resistance and is lined with a long pile Alpaca wool blend in the body with a quilted satin sleeve lining to provide insulation, functionality, and a finished feel. This improved military original — which will combat the winter cold with considered Iron Heart craftsmanship — boasts Alpaca wool lined and snapped D-Patch front pockets, an interior snapped pocket, a buttoned and two-way zipper front with above military grade reproduction hardware, Permex snaps, a buttoned throat and adjustable back waist and cuff tabs, concealed ribbed storm cuffs, and underarm eyelet vents. Over-engineered to start, the 37-BLK N-1 Deck Jacket will deliver a lifetime of durability in an unmistakable design packed with over-the-top details to strike a perfect balance between reproduction and evolved interpretation. It's a cold-climate staple that's ready to roll with battlefield bravado.


  • Modern Fit
  • 14 oz. Heavy Duty Oiled Whipcord Twill
  • Sulfur Dyed
  • 100% Cotton
  • Water-resistant Urethane/Paraffin Oil Treatment
  • Lined: 80% Virgin Wool / 20% Alpaca Wool
  • Interlining Between Exterior & Interior
  • Set-in Sleeves
  • Quilted Satin Lined Sleeves
  • Concealed Ribbed Storm Cuff
  • Snapped D-Patch Front Pockets
  • Vertical Interior Snapped Pocket
  • Alpaca Lined Pockets
  • Buttoned & Zipped Storm Placket Front
  • Two-way YKK Military Grade Zipper
  • Military Grade Reproduction Buttons
  • Permex Snaps
  • Buttoned Collar Latch
  • Buttoned Tab Adjustable Back Waist & Cuffs
  • Underarm Eyelet Vents
  • Chainstitched Throughout
  • Bartack Reinforced
  • Made in Japan


Model Measurements: 5'7" | 135 lbs. | 37" Chest | 30" Waist - Wearing Size S

Iron Heart Outerwear sizing is graded in small increments, and the 37-BLK generally runs true to Iron Heart sizing. To accommodate layering, consider going one size up from your common Iron Heart size, or the larger size of your range. For a tailored fit or to wear with just a base layer, consider going with your normal or the smaller of your Iron Heart size range.

We recommend consulting our Sizing Guide and using our Virtual Size Chart.

Please feel free to Contact Us for additional assistance.

About Iron Heart

After 20 years of working in the Japanese garment industry, Shinichi Haraki established Works Inc., a.k.a. Iron Heart, in 2003 as a heavyweight clothing brand initially geared toward Japan’s motorcycling community. Iron Heart creates classic and timeless clothing crafted out of the finest materials and achieves the highest standards by closely working with fabric development, garment manufacturing, and the brand’s cult community. Over the years, Iron Heart has become the definition of bullet-proof garment construction. Staying true to their slogan,... View All Iron Heart Products