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 .

Our verdict The React Infinity Run Flyknit 3 from Nike is the brand's easy-day running shoe. With a generous cushion, we found it comfortable to eat up lots of miles on the pavement. And if you're looking for a lockdown fit that will keep you stable from the first stride to last, this shoe won't disappoint.

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.

The main difference between the Nike ZoomX Invincible Run Flyknit 3 and Nike ZoomX Invincible Run Flyknit 2 is that the new running shoe has been overhauled for a firmer, more responsive and stable ride while loading up on cushioning for easy-going runs, recovery runs and long runs.