Wide, curved rim that minimizes air resistance, even with 28mm tires. AIR+PLUS design for maximum bike control in crosswinds and gusts. Harness the wind for a significant aerodynamic advantage. High-tech construction, the material of the future: T1000 Carbon Fiber with Graphene Epoxy, the lightest discovered to date. Available sizes: 700c Rim material: Graphene with Ultra High Modulus T1000 carbon fiber Finish: Spectro with AIR+PLUS profile PROFILE: 25MM Inner width: 21mm Outer Width: 28mm Tire Compatibility: Clincher, Tubeless Ready