Because the real AJs are produced by NIKE, and the imitation AJs have other marks.

Distinguish true and false AJs:

1. The white leather surface of real AJs has small granular dots, while imitations have none.

2. Genuine AJ heels are funnel-shaped, while imitation AJ heels are the same size at the top and bottom, or smaller at the top and larger at the bottom.

3. The genuine AJ flying wing has a strong three-dimensional effect, while the imitations do not.

4. The traces of authentic AJ products are very fine, and the needle holes of the traces are almost very small, while the counterfeit products have large pores.