Schwalbe Big Ben HS 439 Performance Cruiser Bicycle Tire - Wire Bead - black-Reflex - 24 x 2.15 Schwalbe, Big Ben, 24x2.15, Wire, Endurance, Clincher, Race Guard, 67TPI, 30-55PSI, Black Race Guard protection with a double layer of Nylon fabric under the tread Endurance com rubber for the highest durability