The S-Works Turbo tire sets the standard for how a performance road tire should be. It&';s fast, light, and supple. It features our GRIPTONA(R) compound with extremely low rolling resistance and superior cornering traction that helped win Worlds on a rain-slicked attack. So no matter if you&';re climbing with the best of them or descending like a rider possessed, this is the tire for anyone who demands nothing short of the best. Casing: 120 TPI Bead: Foldable Compound: GRIPTONA(R) Flat Protection: BlackBelt 700 x 24mm, psi 100-125, approximate weight 210g 700 x 26mm, psi 100-125, approximate weight 220g 700 x 28mm, psi 85-95, approximate weight 240g