Nike collaborated with psychedelic-pop illustrator Steven Harrington for a special sneaker pack released on Earth Day in 2019. The collection includes the Steven Harrington x Air Force 1 Low Flyleather QS 'Earth Day' sneaker, which enhances the iconic Air Force 1 silhouette with whimsical illustrations and unique details that differ between the left and right shoe. Crafted with Flyleather material, a combination of leather and leather-fiber material, the shoe offers a lighter sensation. Additionally, it features Air-Sole cushioning and a semi-translucent rubber tread for enhanced comfort and traction.