IHM-53-ODG 12oz Whipcord Lightweight N1 Deck Jacket Olive Drab Green

Inspired by the classic US Navy deck jackets of the 1940s, Iron Heart's interpretation of the N1 has become a signature piece. This lightweight model replaces the thick Alpaca wool insulation and quilted sleeves found on the heavyweight N1 with a much lighter weather-resistant Japanese Ventile cotton lining — slimming the jacket down, enhancing breathability, and adding a layer of protection against wind and rain.

For FW26 these jackets use a reactive-dyed fabric, the same as that found on the wool-lined models. This replaces the sulphur-dyed whipcord that featured on previous versions of this jacket, resulting in a richer shade of olive and ensuring longer-lasting colour. Finished with a corduroy-lined collar that contrasts the whipcord, the result is a jacket that offers classic N1 styling at the perfect weight for the transitioning seasons.



• 100% cotton

• 12oz reactive-dyed cotton whipcord "jungle cloth" 
• Water-resistant 6.2oz Japanese Ventile cotton lining
• 14-wale reactive-dyed corduroy line cuffs, collar, and pockets
• Two-way YKK zipper
• D-stitch pockets with snap fastenings
• Snap fastening interior "gun" pocket
• Buttoned cinches at hem and cuffs
• Paracord drawstring at hem fitted as standard
• Durable poly/cotton stitch construction
• Made in Japan

Size Chart (Inches)

All measurements in inches.

Inspired by the iconic U.S. Navy deck jackets of the 1940s, Iron Heart's N1 has become one of the brand's most recognizable outerwear silhouettes. This lightweight interpretation replaces the traditional heavyweight alpaca wool insulation and quilted sleeves with a breathable, weather-resistant Japanese Ventile cotton lining, creating a slimmer and more versatile jacket that's ideal for the transitional months.

For FW26, Iron Heart has also updated the 12oz Japanese whipcord fabric with a new reactive-dye treatment, replacing the sulphur-dyed fabric used on previous versions. The result is a richer, deeper shade of olive with improved colour retention, allowing the jacket to maintain its distinctive appearance through years of wear. A contrasting corduroy-lined collar completes the design, preserving the classic military character that has made the N1 such an enduring favourite.