AYAF9 red
AYAF17 blue
AYZF7. Simple version, the insole is different without carbon board
AYZF9 popular version
The naming rules of Li Ning shoes are attached
First place: A Li Ning
Second place: Y badminton shoes
Third place: T training shoes; Z professional training shoes; A competition shoes (the bottom configuration is important, and cultural shoes are not included)
Fourth place: D in 29; E In 21; F 211 (before the third quarter of 29, it was in another code form)
Number after the fourth digit: upper style
Number after the bar: color.