The Panaracer GravelKing Semi Slick SS R LINE was developed for cyclists who want to go fast without sacrificing control, traction, and climbing characteristics. The Semi Slick has been equipped with the latest Panaracer technologies, including the Zero Slip Grip Gravel compound, the robust TuffTex casing, and BeadLock technology. The rubber compound boasts a formulation of specific materials for gravel, starting with Panaracer's patented ZSG (Zero Slip Grip) material. ZSG ensures remarkable resistance to temperature and weather conditions and offers low rolling resistance and consistent grip across a wide range of temperatures, from near-freezing to scorching heat. TuffTex is a revolutionary structure developed exclusively for GravelKing tires. The Race-Line uses a TuffTex-R casing that is more flexible than the standard version and allows for incredible weight savings, while maintaining the DNA that is the essence of every Panaracer Gravel King tire. This unique compound ensures an exceptionally smooth ride and offers the lowest possible rolling resistance on a GravelKing tire. BeadLock: The tire bead fits various rims (including hookless ones) and in most cases can be mounted with a standard floor pump. Panaracer Gravelking tires are produced in Japan by experienced technicians using the most advanced materials. This guarantees exceptional manufacturing quality and performance.