As light as you want, as fast as you need, as comfortable as you dream. The shoe for the modern rider. Quick to wear and adjust, thanks to its Firmor closure, Prima is built with the lightest upper to eliminate any foot fatigue. Its low-profile carbon nylon Aerolite Sole is engineered to offer all the feeling while running and maintain a comfortable structure while walking. -Politex Matte upper is used in the shoe's lightweight construction to reduce foot fatigue -Anatomical heel construction is contoured for more stability -Firmor lateral support enhances stability while in motion -High-density resin dialing system with Dyneema and Firmor closure provides a customizable fit -Aerolite carbon plus nylon sole has a stiffness level that combines ergonomics with power transfer -Sole inserts are built to last