The Roubaix Pro is an endurance road tire that's well suited for smooth and rough roads alike. That's because it's fast like any competitive road tire, only it features a bead-to-bead Endurant casing, plus our BlackBelt technology for puncture protection. Meanwhile, the casing smooths your ride and keeps you fresh, while the tread handles responsively over mixed terrain. It also features a slick center tread for low rolling resistance and shoulder sipes for increased surface adaption and grip. Casing: 120 TPI Bead: Foldable Compound: GRIPTON® Flat Protection: Endurant Casing and BlackBelt 700 x 23mm/25mm, psi 115-125, approximate weight 260g 700 x 25mm/28mm, psi 85-95, approximate weight 300g 700 x 30mm/32mm, psi 75-95, approximate weight 355g