The Fizik Vento Stabilita Carbon Shoe has a highly customizable fit with both 2 Boa Dials and the new Dynamic Arch 2.0. The dual Boas allows for precise adjustments and the Dynamic Arch 2.0 morphs to better fit your feet. The PU Laminated Upper is layered over mesh for long-lasting comfort. The R1 Outsole has a full unidirectional carbon sole with a stiffness index of 10.