Air Jordan 1 Low SE Craft 'Obsidian Blue'Size Guide: Men's sizing. fits true to size. Refer to the size chart for measurements. Description: This low cut AJ1's Craft DIY aesthetic mixes up multiple materials on the upper. Shiny patent leather in deep navy Obsidian stands out on the toe box. The same material is used again on the signature profile Swooshes on both the medial and lateral sides of the shoe but. this time. in a lighter shade of French Blue.