Old Navy Slim Fit Black Blue Windowpane Flannel Shirt Medium #oldnavy #flannelshirt #mensstyle #casualwear #layering Old Navy Slim Fit long-sleeve flannel shirt featuring a black base with blue windowpane plaid pattern and single chest pocket. Soft brushed flannel construction with a modern slim-fit cut. Great for casual wear, layering over tees, workwear-inspired outfits, fall and winter styling, or everyday use.