PRODUCT STORY: The RS-XK features an engineered mesh base with overlays and progressive elements paying homage to the original RS-X. This runner has a full-knit base with leather and suede overlays over a rubber outsole with a nylon pull on the heal top, so they're easy to put on. FEATURES & BENEFITS: Running System: PUMA's comfortable cushioning technology celebrates the reinvention of a unique moment and movement in culture. DETAILS: Knit base and collar; Suede heel and eyestay overlays; Leather overlays on toe and heel; TPU Formstrip with screen-printed lines; Rubber outsole. Colour: black