This tire is for those cyclists who are looking to expand their cycling boundaries, including roads that may not be suited for normal road tires. The GravelKing 'Slick' tire solves that problem. The tire comes in four different widths to suit a lot more terrains. Natural rubber compound, puncture protection breaker and a special low rolling resistance casing make the GravelKing a go-anywhere tire and a great option for the city as well.