Those little shoulder straps always make me think of military jackets. This jacket has flapped breast pockets. This shirt is actually olive green, but it appears brown on camera.
Brand Information: Banana Republic
In Sin City (3x04), Dean wears this jacket when he questions Casey about Ritchie and eventually leads her back to her wine cellar where they get trapped. He changes out of it after Sam rescues him.
In Hammer of the Gods (5x19), Dean wears it for the entire episode.
In All Dogs Go To Heaven (6x08), Dean wears this coat, whenever he is not in a suit, from the beginning of the episode until they shoot all the Skinwalkers. He only takes it off when he is inside the motel room.
In Unforgiven (6x13), Dean wears this coast when he and Sam leave the restaurant, and Dean tries to pack them up and get them out of town, only to be convinced by Sam to stay and work the case. He wears it for the rest of the episode, only taking it off when he has to wear a suit, and when he tries to convince Sam yet again to leave but is denied and helps Sam with the research instead. He is wearing it at the end of the episode when Sam collapses.
In Mannequin 3: The Reckoning (6x14), since it picks up where we left off, Dean is still wearing this coat as Sam comes to. He continues to wear it as they leave town, stop for food, and Dean finds their next job. He then changes to a different coat.
In Meet the New Boss (7x01), Dean wears this coat when they break into the mansion and summon Death. He then wears it again at the end of the episode when they take Cas back to Crowley’s lab to try to get rid of the monster-souls.
In Time After Time (7x12), Dean wears this coat on the stakeout with Sam where he first encounters Chronos and is zapped back in time. He changes out of it once Elliot Ness brings him to a clothing store to get him some proper 1940s clothes.
FATE: Presumably left in the change room at Ezra Moore’s store in Canton, Ohio, in 1944, along with a green shirt, a black T-shirt, and Dean’s boots and jeans.(Time After Time 7x12)