The Vertical 2.3 is the original 'do it all' MTB tire, still satisfying mountain bike riders today. The tire is a universal, knobby tread designt for optimum grip on any terrrain. The tire consist of a durable casing and a long lasting tread for those sporty amatures out on the trails. Wire bead and mesh sidewall design. ETRTO: 57-559. PSI 50-65