I finally bought a real pair and there is a difference.  Guilty of ordering a fake pair from China for $16. Lol.  They all run big, so definitely buy a full size down. The real ones have a foil Metallic label, white logo in the back, nice insole, not a thin one without the logo.  Listen, the real ones are around 80 dollars take no discount, and Id only buy them from the well known sellers either directly from amazon, don't just randomly add the shoe to the cart.