With a lightweight, tubeless ready, open tubular casing, the Vittoria Corsa Speed G Plus Clincher Tire is billed as the world's fastest clincher tire and features revolutionary graphene technology for an unprecedented mix of low rolling resistance, durability, and all weather grip. The Corsa Speed G Plus is the culmination of a collaboration between Vittoria and an external company, Directa Plus, to adapt a carbon compound known as grapheme for use in bike tires. The resulting compound is dubbed G plus, and Vittoria claims that its inclusion significantly reduces rolling resistance while increasing the durability Vittoria has long been known for. The inclusion of graphene is credited with enhancing traction, increasing durability, and reducing rolling resistance, and its impressive strength to weight ratio keeps the tire well suited for racing by reducing rotational mass. According to Vittoria, the combination of G Plus and Isogrip compounds creates a tire surfacing that also rolls fast in both dry and wet conditions for confident cornering and handling no matter what nature comes up with when you're battling it out on rolling country roads. Vittoria claims that the elasticity and carbon construction of graphene creates an incredibly durable tire, but for even more reassurance it utilizes a corespun casing to increase the tire's lifespan. With multiple cotton fibers twisted together to create one yarn, core spun casings are significantly more supple than typical casings without adding unnecessary weight to the tire.