The tags have the size and product information on the inside of the shoe (behind the tongue). Real Adidas shoes will have tags with different serial numbers for the left and right shoe, but a fake product will have the same serial number.

The serial number on the underside of the tab must match the serial number on the box. The brand uses its cloverleaf logo in a print on the tongue and not a sticker like the counterfeits. The finishing of the sneakers adidas Originals is of high quality. Most models have simple holes instead of eyelets.