The Air Jordan 4 is a basketball shoe designed by Tinker Hatfield and released by Nike. It was first released in 1989, and was worn by Michael Jordan during the 1989-1990 season. The shoe features a leather or nubuck upper, with a unique design that includes plastic mesh on the side and the iconic plastic wing eyelets. The shoe also features a polyurethane midsole and an air-sole unit in the heel for cushioning, as well as a rubber outsole for traction. Over the years it has been re-released in various colorways and materials, and it's considered one of the most iconic Air Jordan models.