The P Zero Race is crafted to pack all the benefits of tube type technology into a race-ready all-rounder which outperforms all cycling clinchers that Pirelli has created before Smart Evo Compound - Latest generation blend of smart polymers to provide maximum grip with a low rolling resistance Techbelt Road – High performing casing structure with an added layer of high cut resistant fabric underneath the tread to provide superior puncture protection in a wide variety of conditions Casing: 120tpi Weight: 205g