Description. Nike By You is a service provided by Nike allowing customers to customizeclothing and footwear purchased from Nike. The customer becomes the designer as they change and add a personal look and feel to a selected item.

Most Nike items will follow this rule if it contains the small serial code label. Look underneath the wash tag to find this reference.

Locate the tag inside your shoe. All authentic Nike shoes have a tag sewn into them with their size, barcode and model number on it. You will recognize it most easily by the barcode. Look for it inside: The tongue.

Examine the SKU number on the box and the labels inside of the shoes. Every pair of authentic Nike shoes comes with an SKU number that is identical to the SKU number on their box. ... For example, a fake label may tell you the shoe was designed in 2008 when in fact Nike first manufactured that item in 2010.