When conditions are extreme, Vittoria's Rubino Pro Engurance G2. 0 Clincher Tire is built to keep you rolling with confidence. It features intensely tough flat protection across the sidewalls and center treat, and an aggressive tread pattern built for variable conditions. It utilizes the revolutionary Graphene compound, a carbon-based material with variable properties that change depending on the load being applied to the tread -- this means when you're rolling straight, the center tread hardens for quick-rolling speed, and upon cornering the tread softens for intense grip. Built to last over long winter training miles and inclement early season races, this tire features exceptional all-weather grip, will handle sub-freezing temperatures with ease, and rolls fast over the toughest roads. Vittoria constructs the Rubino Pro Endurance with a triple compound designed to provide a balance of durability, flat protection, fast rolling speed, and solid cornering grip in both dry and wet conditions. This newest iteration switches things up from the G+ Isotech we saw used before, and gets a little more specific and deliberate with its Graphene placement, creating the all new G2. 0 compound. G2. 0 starts with the same carbon-graphite base as the G+, but is a bit more strategic about its placement, instead of adding it to the entire batch of rubber. This means that it can be targeted to boost grip in the corners, and reduce rolling resistance, without adding more than there needs to be and increasing weight and bulk. The results' A tire that is fast and supple regardless of weather and will conquer the roughest of roads with the smoothness of a racing tire and the durability of a training tire.