N-1 is the name of a cold weather protection system. This N-1 deck jacket was issued to American soldiers based on aircraft carriers during the Korean War (WW2).

• 100% cotton
• Khaki
• Membrane: cotton cord canvas
• Lining: alpaca wool velvet
• Rib: wool rib
• Front closure: 1940s bell type, brass, cotton ribbon
• Made in Japan