Vittoria Corsa Evo CX II Tubular Puncture Proof Folding Tyre - 26 x 2.00Vittoria Corsa Evo CX II Tubular Puncture Proof Folding Tyre 26 x 20mm Corsa CX has proved successful in road races all over the world, but the new EVO version is bound to even greater success. With a handmade tubular structure for superior performance and comfort, it has also got a special latex inner tube that increases its elasticity and puncture resistance. Further features are the Kevlar SiO2 3D Compound with added silica for reduced rolling