Puma El Rey Cross Perf LeatherFashionable 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. This new look from Puma looks classic yet is still modern and quirky. And, the El Rey boasts 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.