The Union LA x Air Jordan 4 Retro 'Desert Moss' was released to celebrate 30 years of the retailer. Bringing back a modified AJ4 created by the two brands in 2020, the shoe's aesthetic is informed by outdoor gear from the 80s and 90s, as noted by its inclusion in the Tent and Trail capsule. Built with a purple mesh base, yellow suede overlays the design, while turquoise on the molded eyelets and heel patch adds further color. Maintaining signature features of its predecessor, the shoe also includes a stitched fold-down tongue, yellow 'UN/LA' tag, and translucent TPU wings, while underfoot, visible Air in the heel of the polyurethane midsole provides cushioning.