● Product These are the Nike Infinity Run 4 running shoes, advertised as injury-free. These are genuine domestic products purchased from a sporting goods store (not parallel imports, which are often counterfeit). Featuring the new ReactX foam, stretchy Flyknit, a rocker-like sole, and a wide midsole, this model offers a balance of soft impact absorption and responsiveness without excessive sinking, comfortable foot hold, and stability. While models like the Invincible are too soft and sink in too much, requiring the leg strength of elite runners to run with good rhythm, the Infinity is, in my opinion, an easy-to-run-in pair for everyday runners and those just starting out. You'll feel soft cushioning whether you're running or walking, and the all-black design makes them easy to wear casually. ● Condition Purchased new from a sporting goods store (retail price: 18,700 yen) and used for jogging only once on a sunny day. I didn't try them on because I own other Nike models, but when I actually ran in them, the size didn't fit, so I'm selling them. The Flyknit is a bit tight, so a half size to one size up might be better. There are no noticeable stains or scratches, but there is some slight dirt on the outsole from running 2 kilometers on a dry surface. There are no particularly noticeable scratches, but some people may be concerned about minor dirt or scratches that come with normal use, so please understand that these are used items. The original box and cut tags are also included. ● Price Reduction I am not considering price reductions because shipping is included. ● Notes Price includes shipping. Immediate purchase without comment is OK. Please refrain from cancellations due to personal reasons after purchase. We will ship in simple packaging to reduce shipping costs. Main color: Black