Nike Flyknit Racer Oreo 2. I bought these brand new from seller "brother_tao" who sells all sorts of Sneakers on Ebay. I had understood there would be an easy return/exchange policy. Unfortunately, there wasn't one. The size was wrong - it is a Men's US 4.5 and I need a Men's US 6.  These sneakers first went to eBay's authenticator, passed the test and then were shipped to me. They are brand new in the box, unworn, and even come with a QR code/tag that guarantees their authenticity.