Adidas is known worldwide for its quality products. The quality of these products means the price is not always affordable to everyone, so some people revert to buying fake Adidas.
If you see price much lower than retail (from 70-100USD) it is about to 100% to be counterfeit. But some selling fakes for real prices.
This is probably the easiest feature to identify. Adidas hasn't released shoes with heel tags in years so real Adidas Superstar sneakers would not have heel tags. The heels are probably the most neglected areas to look at but there are a few areas to check so make sure you get pictures of the back of the shoe.
Real: Size fills up the back of the heel, stripes are even
Fake: Printed, small, deformed, slightly modified logo, misspelling of brand
Real: Skinny laces
Fake: Flat and fat laces
Number of Eyelets
Real: 6 eyelets on Junior and Women's shoes, 7 eyelets on Men's shoes
Fake: 7 eyelets on all sizes
Real: Label is printed on
Fake: Embossed yellow gold label or label from an old model