AJ4 Retro 'Infrared' features distinctive color blocking to recall the 'Green Glow' AJ4 launch from 2013. Its smooth nubuck upper is finished in a charcoal colorway. In contrast, lighter gray accents appear on the forefoot overlay, while black covers the heel tab, structural wings and woven tongue tag. A metallic gold hue covers the molded eyelets and four woven tongue tags. For comfort, a polyurethane midsole packs visible cushioning from the Air-sole in the heel.