Vittoria Open Evo Triathlon Tire (Black, 700 x 22) Vittoria Open Triathlon Evo Created for Ironman events, Triathlon Evo is a handmade 320 TPI casing with slick tread Impermeable butyl inner tube holds the pressure when the bike is parked overnight in a triathlon event's transition area Low-drag 22mm section built for speed like all of the Servizio Corse range Tri-specific butyl tube adapts tubular for triathlon racing