P ZERO Velo TUB is the result of several months of intensive development from Pirelli's R&D department, together with World Tour Pro cyclists and mechanics. All the elements of the final version of P ZERO Velo Tub were tested, adjusted and tuned in that environment: built on the finest 320tpi Corespun with aramid reinforced casing, latex inner tube for improved rolling and puncture protection; Yellow Soft compound for uncompromising grip and handling performances. P ZERO Velo TUB is a ready-to-race handmade tubular tyre and is perfect for Grandfondo racing, as well as shorter high-paced races, whilst also being a solid and reliable tyre for everyday riding.