Specifications Hign-concerned Chemical:None Model Number:RUBINO PRO/RUBINO Size:700 * 28C/ Use:Road Bicycles Type:Tire Name:RUBINO PRO Material:Graphene 3C 2.0 Colour:Black Cord:150TPI PSI:87-11PSI Rubino is the king of value for money Questions&Answers Q:This tire is tubeless? A:Tubeless stands for Tubeless; Clincher stands for Open Tire. Please check carefully when placing an order Product name Vittoria RUBINO PRO Road bicycle Tire 70025 Graphene 2.0 Tubeless Tire/Clincher Folding Tire 150TPI For 700C Road Bicycle Competition Product description: NameRUBINO PRO ColourBlack Cord150TPI 700X25C 270G 700X30C 305G PSI87-11PSI MaterialGraphene 3C Nylon Product Features All-round tire 3 conforming materials to achieve speed, grip and flexibility. Extra puncture protection and softness achieved thanks to thick tread Caution Vacuum tire installation is the need for skills experience novice is not recommended to install their own. Recommended with Victoria tire repair fluid installation, (other brands or have a different viscosity is not suitable for the case) After installation, shake the entire tire body, after a few hours of rest after use, (a little tire wall tire fluid seepage is normal, and so will be eliminated after the action of the tire repair fluid) vacuum tires will slowly lose air, it is recommended that each time you go out before cycling are inflated. Material: Graphene material : Graphene interacts with rubber by filling the space in between the rubber molecules, which has been verified to increase all positive performance metrics. Unlike the first-generation graphene, the new 2.0 graphene is functionalized to enhance specific tire [performance]. In other words, where the first generation of graphene compounds raised the bar evenly, Graphene 2.0 pin-points each performance metric, and increases it [disproportionately] to the rest. Vittoria is now able to apply Graphene in such a way that it can achieve a performance boost specifically for speed, wet grip, durability and puncture resistance. 4C material: Graphene 2.0 has also been integrated into the existing Vittoria 4C technology. Using a unique production process, 4C allows for the use of four different compounds in one tire. By adding Graphene 2.0, Vittoria claims to further hone each compound for better performance in its specific application.