This shirt is a dark bluish purplish grey plaid. The plaid, however, is very subtle, broad and the dye has a smudged like quality. It’s not so much about stripes as it is about different variations of colour gradation. The shirt has a western cut to the shoulders, does up with light-coloured snaps, and has an interesting center seam detail on the front pockets.
Brand: American Eagle
In First Born (9x11), Sam wears this shirt for the entire episode, except when he is undergoing the procedure to remove Gadreel’s grace, at which point he strips down to a single-layer of a black t-shirt.