There is an about a 1.5-size difference between men's and women's sizing.
For example, a women’s size 9 is about a men’s size 7.5.
The Air Jordan 1 High “Obsidian/University Blue” is a 2019 release of the legendary silhouette in a colorway inspired by Michael Jordan’s college career at the University of North Carolina. Similar to the women’s exclusive “UNC Patent Leather” colorway that released in February 2019, this fall release in men’s sizing replaces the glossy patent leather construction with full-grain leather for the Sail, Obsidian, and University Blue color blocking. The clean look became an instant hit, and the Air Jordan 1 High “Obsidian/University Blue” is now yet another coveted colorway of Michael Jordan’s first signature shoe.