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 .

The upper on the Zoom Fly is well thought out and built for endurance. Engineered mesh backed up by Flywire and a padded collar provide a secure fit for your foot. The broad flat tongue takes a little getting used to, but it gives enough protection from the laces without adding more padding or weight.

Zoom Air is like a little air-filled plastic pillow they insert in the midsole. It's very similar to the Nike Air units they've been using for decades, but the "Zoom Air" unit has little microfibers inside the pillow that apparently help create a springier feel. Zoomx is a kind of foam used in the midsole itself.

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.