Look for the tag on the product which will have the size and other product information mainly inside the shoe that is behind the tongue of the shoe. Real Adidas shoes have tags with serial numbers for the left and right shoe. However, a fake product will have the same serial number on both shoes.

1975. Adidas introduces the Nizza, conceived as a competitively priced shoe for both sport and leisure, positioning itself as Adidas's response to the Converse All Star. Initially designed for a range of activities, the Nizza soon becomes closely associated with basketball.