Science and sportswear converge with the Extotek NITRO™. Built using the precise engineering in our performance running line, these sneakers explore visible functionality and futurism through a pure tech-aesthetic. We’ve kitted out the shoes with a mesh with synthetic overlays. NITRO™: Enclosed nitrogen-injected foam designed to provide responsiveness and cushioning in a lightweight package. The upper of this shoe is made with at least 20% recycled materials as a step toward a better future.