Chunky, retro running-inspired silhouette Puma Running System technology for cushioned comfort Durable synthetic upper with color contrasting overlays Lace-up design with padded collar and tongue Flexible rubber traction outsole for grip The Puma RS-X³ is imported. The Puma Running System technology is back and better than ever on the Men's Puma RS-X³ Casual Shoes. Featuring the chunky silhouette you know and love, the newest iteration of the RS-X is here and ready to make a statement. Size: 10.