Product Story: The speed of gravitational acceleration near the Earth's surface is 9.8 m/s. And that's where the name of this shoe comes from. Inspired by all things astronomical, these are a version of the RS family, with super comfy sockliners and RS foam, translucent detailing and a reinvented midsole with space-inspired spheres. Details: Textile and synthetic upper Sockliners and RS foam for maximum comfort PU midsole with space-inspired spheres Rubber outsole PUMA Formstrip at lateral side CAT LOGO and Running System wordmark at tongue