1, look at the outer packaging first. There is 350 on the front of the shoe box, which is a drawer-type opening method. Authentic woven uppers have dense lines, small gaps, and are relatively thick, which is not easy to deform when pressed. There is a big gap in high imitation, and the grid looks obviously three-dimensional. 2. The sole is a very recognizable part. The genuine sole has three ribs, which are thick and prominent, and the small circle in the middle of the sole is granular. The small circle of high imitation sole is as thick as three bars, and the small circle is very smooth. 3. Finally, look at the wiring. Authentic midsole wiring is widely spaced, with two wires together and thicker wires. High imitation has only one line, and the line is very thin. The hypotenuse has the iconic SPLY-350 font, and the genuine product is fuller than the high imitation.