The Steven Harrington x Nike Cortez Earth Day is another exclusive style that celebrates Earth Day on April 22. Donning Flyleather innovation that’s made with at least 50% leather fiber to promote its sustainable theme, the shoe is also detailed with bold graphics by the LA-based designer. The most striking is seen on the sides with a cartoon character hugging the Earth, while the heels bear Harrington’s playful palm trees work. Finally, its white base is completed with matching rubber soles.