The Ruohan Wang x Nike Air Max 90 Flyleather is a unique sneaker that pays tribute to Earth Day through a special collaboration with the Berlin-based artist. Made with sustainability in mind, this shoe features a custom artwork on its upper, which is meticulously crafted from a minimum of 50% recycled leather fiber obtained from leftover scraps in the leather manufacturing process. The asymmetrical hand-drawn elements, such as the woven tags on the padded leather tongue, add an artistic touch to the design. Additionally, the discordant colors used on the Swoosh, heel patch, and midsole wedge set these iconic elements apart. Overall, this collaboration showcases Nike's commitment to both artistic expression and environmental responsibility.