The RS-X is back. The future-retro silhouette of this sneaker returns with a progressive aesthetic and angular details, complete with nubuck and suede overlays. The comboâs all about a disruptive design to showcase your disruptive style. FEATURES & BENEFITS PUMAâs leather products support responsible manufacturing via the Leather Working Group. Running System: PUMA's comfortable cushioning technology celebrates the reinvention of a unique moment and movement in culture Mesh upper with nubuck and suede overlays PU midsole with RS Technology Rubber outsole PUMA Formstrip on lateral and medial sides PUMA branding details Upper: Synthetics; Lining: Textile; Sockliner: Textile; Midsole: PU; Outsole: Rubber | PUMA RS-X Efekt PRM Sneakers in Black | Size 3