P Zero 700C x 28 Road Tyre.Size:700C / 28.We developed our highest performing cycling product working with World Tour winners.The P ZERO™ was created to allow every cyclist to achieve their best performance.P ZERO™ RACE TUB SL:- The endless research and development process brought us to the creation of our lightest racing tubular ever.Thanks to the application of a special inner tube, our best tubular is now 35g lighter, the perfect weapon for the World Tour.P ZERO™ VELO TUB:- P ZERO™ Velo Tub is the result of several months of intensive development work of the R&D; department of Pirelli with World Tour PRO cyclists and mechanics.