The Castelli Inferno Bib Shorts are purpose built for the sweltering days of the Tour and the Vuelta. The shorts are constructed from non transparent mesh fabric that keeps you cool, but also manages to provide a compressive fit to keep your muscles as supported as possible. At the core of the shorts is Castell's famed Progetto X2 Air Seat pad it's a favorite from weekend crits to month long Grand Tours. It's topped with a soft, seamless, four way stretch fabric to ensure that you'll rarely experience chafing or discomfort. An important note on the Inferno Bibs while the mesh panels are not transparent, they're also not UV protective, meaning that your skin will likely need a little sunscreen.