There are hundreds of football/soccer jerseys/shirts on the market and it makes harder for the fan to tell the difference. As a collector and seller of jerseys over the years i have been able to spot out the differences. Lets begin with the Adidas jerseys,
1) Most dealers/wholesalers selling authentic adidas jerseys will have them presented in their official adidas bag.
2) The jersey if brand new will always have the sticker/barcode which states the size of the jersey, the team,if its away or home jersey.
3) All authentic adidas jerseys will have an inner tag on the jersey which states the date of manufacture on the first line, on the second line will be a 6 digit code, as seen in the 2nd photo
Orignal From: HOW TO SPOT A FAKE FOOTBALL JERSEY