This vintage denim chore coat is made of 100% cotton and is by Jones New York. It is a heavy weight denim, the same thickness as a pair of jeans. There is a tiny dot of discoloration on the back, noted in the last picture.
The back of the shirt features double quilt squares dyed with indigo and osage orange. The quilt blocks also have sashiko stitched details.
Size is approx a L but please read measurements for best fit: