Sharing the same versatile tread pattern as the Kwick Nine and Kwick Seven.5. Featuring K-Shield protection for puncture resistance and a reflective sidewall for better urban visibility, the Kwick Four is ready for your urban adventures! - Premium Trekking, Comfort, or Commuting tire - Front and Rear application - K-Shield (KS) is a layer of light, flexible rubber containing aramid and ceramic particles inside the tire under the tread area only. Designed to prevent punctures and increase tire life - Reflective stripe on sidewalls for added safety