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 . This number can also be found on the Nike website by searching for the specific shoe model .

We recommend the Nike Free RN NN as an excellent choice for: Runners with a neutral stride who prefer lightweight and agile daily trainers with a bare-there ride. forefoot/midfoot striking runners who want a flexible mid-drop road shoe that can bend it like Beckham.

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.

On the outside of your sneakers you cannot check whether this is a WMNS or MEN version. You can find this info inside your sneakers. The difference can be recognized by the ratio between the US size and the other sizes. You can find these sizes in the tongue or inside of your sneakers.