I have Coopers jacket (well maybe the closet thing from the actual one) somebody sold it to me who worked on the cast and crew of the movie. They were given as
Jacket Carhartt Joseph Cooper (Matthew McConaughey) in Interstellar | Spotern
How a Carhartt jacket went from blue-collar uniform to hipsterwear to Interstellar | Fashion | The Guardian
INTERSTELLAR CARHARTT | Matthew mcconaughey, Christopher nolan, Interstellar
Matthew McConaughey Interstellar Carhartt Jacket and Hamilton watch! | Carhartt jacket, Carhartt detroit jacket, Carhartt