All of the lines on the Air Jordan 7 were inspired by the poster's Western African tribal designs. Michael Jordan also wore the Air Jordan VII during the 1992 Olympics in Barcelona. Nike had created a unique "Olympic" colorway, with a 9 on the back instead of the number "23." This version is now a very rare shoe in both men's and women's sizes. The Air Jordan 7 was released in September 1991. It is one of the most popular models in the series and has sold over 10 million copies worldwide. It features a full-length leather upper with rubber pods for durability. The shoe uses a heel cup and arch support system designed to provide comfort while playing basketball. A foam insole covers the foot bed while a solid rubber bottom provides traction. A magnetic latch at the rear of the shoe opens up to allow easy access to the shoe laces. A logo on the tongue reads "Air Jordan 7". Another logo on the side of the shoe has "Chicago" written inside a circle with two straight lines crossing from the top left corner to the bottom right corner. This is a reference to the city where most of Michael Jordan's games were played. There are three colors available for this model: Black, University Blue, and Carmine Red. Each shoe comes with a matching handbag, key chain, and skateboard deck.