Every pair of authentic Nike shoes comes with an SKU number that is identical to the SKU number on their box. If the numbers are missing or do not match, they are likely fakes. Check the tongue label. Often, fake Nike manufacturers put outdated sizing labels on the inside of the shoe.

To find the model number on Nike shoes , you can check the tag or label inside the shoe . It is usually located on the tongue , collar , or heel of the shoe . You can also look for a 9 - digit number on the side of the shoebox , which is the style number .

All Nike shoes are packaged in a box that is properly labeled and marked. The color and print of the box varies depending on the style, but usually the boxes are orange, red and brown. The style, size, serial number and/or SKU and bar code should be printed on the box.