Schwalbe X-One Allround Hybrid Tire 700x33C Folding Tubeless Ready OneStar MicroSkin 127TPI BlackThe exceptional profile and OneStar rubber compound make the Schwalbe X One one of the fastest cross tires ever. To make it the absolute high flyer, mount it without a tube on a tubeless compatible wheel. In combination with the right wheel you can run tubeless tires for cyclo cross with extremely low air pressures without fear of "Burping" (unwanted air leakage). For instance, it works extremely well with the Iron Cross from No Tubes. TECH SPECS