Air Jordan 4 was launched in 1989, designer Tinker Hatfield first proposed the concept of guard shoes, and adhered to the lightweight speed basketball shoe design concept to complete the design. The upper is made of leather and nylon mesh to reduce weight while improving comfort, and the midsole continues the split rear palm visual Air Sole air cushion of the previous game; The lace holes and heel lift are inspired by the net, and basketball is cleverly integrated into the design of the shoe, giving the overall body fluidity, rhythm and elegance. Jordan won the league's scoring title for the third year in a row and hit that deadly shot near the end of Game 5 of the playoffs against the Cavaliers. It was after the launch of Air Jordan 4 that the Air Jordan series was truly entered into the modern cultural lexicon and became a cultural phenomenon.