Vittoria rubino g road tyrethe ultimate training tyre just got better using graphene a revolutionary substance thats only 1 atom thick but 200 times harder than steel and the lightest material known to man the already excellent rubino has been improved in terms of speed grip and durability the rubino g has it all designed to last for mile after mile in all weather conditions the rubino g is the ideal choice for year round training features graphene compound provides superior grip