An Iron Heart original, made in Japan from Kersey fabric (a fabric originating from the English medieval times). A characteristic of the shirt is its thickness, soft and comfortable feel, as well as the twill texture. [SIZE-GUIDE-INCH] Tag Size XS S M L XL XXL XXXL XXXXL Shoulders 16.3 16.8 17.4 18.3 18.8 19.6 20.6 21.2 Length 27.9 28.5 29.2 29.6 30.2 30.9 31.7 32.1 Chest (P2P) 19.8 20.6 21.5 22.3 22.9 23.6 24.4 25.2 Waist 19.1 19.6 20.5 21.4 21.8 22.5 23.5 24.3 Opening 19.4 20.0 21.0 21.9 22.4 23.0 23.8 24.4 Sleeve 24.5 24.6 25.0 25.6 25.7 27.0 27.4 27.9 Sleeve Opening 3.9 4.1 4.3 4.5 4.7 4.8 4.9 5.0 [SIZE-GUIDE-CM] Tag Size XS S M L XL XXL XXXL XXXXL Shoulders 41.4 42.7 44.2 46.5 47.8 49.8 52.3 53.8 Length 70.9 72.4 74.2 75.2 76.7 78.5 80.5 81.5 Chest (P2P) 50.3 52.3 54.6 56.6 58.2 59.9 62.0 64.0 Waist 48.5 49.8 52.1 54.4 55.4 57.2 59.7 61.7 Opening 49.3 50.8 53.3 55.6 56.9 58.4 60.5 62.0 Sleeve 62.2 62.5 63.5 65.0 65.3 68.6 69.6 70.9 Sleeve Opening 9.9 10.4 10.9 11.4 11.9 12.2 12.4 12.7