Puma El Rey Perf Leather Fashionable and versatile. The Puma El Rey evokes the simplicity that can only come from a vulcanized style. They feature slip-on construction, a thick rubber strap for a snug fit, and a rubber outsole for traction. Plus, the Puma El Rey is a unisex style that is available in numerous textures, colors and patterns. They look perfect rocked with shorts, jeans, or even more dressed up fits.