the zipper

blue pattern

was die klassischen amerikanischen Sweatshirts ausmachte und heute nur noch mit Loopwheel-Maschinen nachgebildet werden kann

and the special pre-shrunk treatment of the fabric

From these requirements

IHSH-266-IND 12oz Wabash Work Shirt Indigo Slim Straight the zipperIRON HEARTS classic work shirt "IHSH 266 IND" made from 12oz Japanese Wabash fabric. Both weft and warp threads are rope dyed in indigo before weaving, and the Wabash pattern is then bleached out of the finished fabric. This gives the black fabric a beautiful, faded look, and the dots won't fade. The classic Wabash pattern originated in the work clothes of railway workers in the 1930s and 40s. Made in Japan 100% cotton 12oz Japanese Wabash Color: