Continental: Best of both worlds.... The Speed King CX can be used both as a pure speed option on dry CX race courses, or as a nimble urban warrior on the cross-commuter bike thanks to the two casing options available.Choose the supple and lightweight 32mm option for racing or a more robust 35mm for the gravel bike that allows you a fast on-road experience with the option of jumping across the parks and down the shortcuts in the urban environment.UCI legal for hard / dry cross circuits or for fast urban free-roading.Diamond shaped centre treadCoarse shoulder lugs