First issued to US Navy sailors in the early 1960s, the A2 deck jacket was the natural successor to the iconic N1, utilising lighter-weight but equally functional materials. Its design incorporated the N1’s tried and tested features such as a heavy-duty zipper and hidden storm cuffs - but with a modified collar, hemline cinches and an added breast pocket for versatility. This Iron Heart take on a classic jacket remains very true to the original design, constructed with a tough 11oz military serge outer shell with a 100% wool liner. The wool we’ve used to line the interior has been specifically chosen by Haraki-san for its unique characteristics. While the yarns are dyed in Nagoya, the knit itself has been shuttle woven in the textile capital of Japan, Osaka. The use of a traditional shuttle loom creates a much fluffier texture to improve heat retention, with the fabric brushed post-knit to achieve a hand feel akin to a vintage wool blanket. Unlike the quilted sleeve lining found on our N1 jackets, this wool lining extends throughout the body of the jacket and all the way down the sleeves - providing maximum warmth and comfort during the colder months, without losing the smooth feel when putting on and taking off the jacket. [SIZE-GUIDE-INCH] Tag Size XS S M L XL XXL XXXL XXXXL Shoulders 16.9 17.7 18.3 19.0 19.9 20.7 21.4 22.2 Length 26.2 26.4 27.0 27.9 28.4 29.3 30.3 30.6 Chest (P2P) 22.0 22.8 23.5 24.5 25.2 26.0 26.8 27.6 Waist 21.0 21.8 22.5 23.4 24.1 25.0 25.7 26.5 Opening 21.3 22.0 22.5 23.5 24.3 25.1 25.8 26.5 Sleeve 26.0 26.2 26.6 27.1 27.9 28.4 29.0 29.6 Sleeve Opening 5.3 5.4 5.6 5.7 5.9 6.0 6.1 6.2 [SIZE-GUIDE-CM] Tag Size XS S M L XL XXL XXXL XXXXL Shoulders 42.9 45.0 46.5 48.3 50.5 52.6 54.4 56.4 Length 66.5 67.1 68.6 70.9 72.1 74.4 77.0 77.7 Chest (P2P) 55.9 57.9 59.7 62.2 64.0 66.0 68.1 70.1 Waist 53.3 55.4 57.2 59.4 61.2 63.5 65.3 67.3 Opening 54.1 55.9 57.2 59.7 61.7 63.8 65.5 67.3 Sleeve 66.0 66.5 67.6 68.8 70.9 72.1 73.7 75.2 Sleeve Opening 13.5 13.7 14.2 14.5 15.0 15.2 15.5 15.7