The large washing labels at the bottom of the shirt can also help identify a fake shirt. Look for the following details:
Country of origin: Authentic Adidas shirts are manufactured almost exclusively in Vietnam, Cambodia, and Indonesia. A different country of origin is a red flag, though not definitive proof that the shirt is fake. For instance, other versions are produced in South America, but these often look slightly different and are of lower quality.
Font: Adidas' standard font is shown in the image on the left. It is clear and usually black, whereas counterfeit shirts often use a grey font.
Pen or pencil marks: Fake shirts often feature pen or pencil marks, or a small number, on the labels. Manufacturers of fake shirts often work with only a small number of machines, so they ''label'' each shirt by hand, with a number or mark, to make clear that it is finished. Adidas never does this, so you should be suspicious if there are any marks on your care labels.