With the crossroads tyre we redesigned our popular crossroads tread making it the best most robust multi terrain tyre out there whether on your mountain bike or town bike this tyre is ready for the rigors of everyday street life and with flak jacket flat protection plus a rugged casing and smooth rolling tread you39ll get around town easily without worrying about flats or traction on parkways and cobblescasing 60 tpibead wirecompound 60aflat protection flak jacket650b x 19quot psi