Air Jordan 4 'DIY'Size Guide: GS sizing. fits true to size. Refer to the size chart for measurements. Description: This AJ4 offers a crisp white leather base accented with black outlines of different shapes. logos. and other fun motifs allowing the user to give it a lively pop of contrast using colouring tools. With that aside. all the signature features of the model are still present on this playful iteration such as the Jumpman branded tongues. midfoot lace supports.