The SI-18 Rival takes inspiration from some of the best K-Swiss heritage models from the 80s and 90s. By taking the upper from the Si-18 Rannell training shoe and putting it on a cup sole bottom inspired by the iconic Si-18 Premier tennis shoe, K-Swiss has made a sneaker that is fresh and new yet still authentic to its heritage tennis roots and upgraded with the CMEVA midsole, an Ortholite insole and gripping moulded rubber outsole.
