The fabric on this shirt by Studio D’Atisan is super interesting, it is more of a rough weave, rather than a flannel, of which it looks like it could be. The cut is high, so it does not hang down low, which is good to wear loose. You should take a size up from your usual size.
Not many brands have as rich of a history in the Japanese denim game as SDA do, with their inception dating back to 1979. A brand that manages to blend über high quality Japanese Selvedge denim from a lighthearted perspective. The grandfathers of Japanese denim.