The product is a Luis Diaz signed Bayern Munich shirt with a Certificate of Authenticity (COA) from Germany. This football memorabilia falls under the category of European Players/Clubs and is a sought-after item for fans of the sport. The shirt is guaranteed to be an original piece with the signature of the player, making it a valuable addition to any football memorabilia collection. The COA adds an extra layer of authenticity to the item, making it a prized possession for collectors of football memorabilia.