The hemisphere is a modern versatile and durable trekking tire with tough puncture protection this bold tread delivers control even on loose surfaces its serial center blocks roll easy on paved surfaces but provides traction off road wide spaced shoulder blocks bite into soft ground the hemisphere excels on streets and bike path waysgt casing 60 tpi gt bead wire gt compound 70a gt flat protection blackbelt gt 26quot x 195 psi 35 65 approx weight 870g