The Vortex Pro is made with Diadora's Pro Road outsole, a full 3k carbon fiber sole with NET breathing technology. The outsole combines synthetic mesh and an impermeable membrane for protection from external elements moisture, mud, etc. all while enhancing the shoe's overall breathability. In addition, the EVA molded insole uses a perforated construction made from waterproof materials. The result is a shoe built to keep your feet dry. Diadora designed the uppers of the Vortex Pro with its Suprell Tech, Morpho AM Cage technology. This special space frame design ensures a tight and pressure free fit, and combines with the molded heel support to keep your foot comfortably in place. The Vortex Pro also features a removable anti slip heel pad to eliminate any heel slippage, and the Boa 2 cable system provides a quick and secure closure. The Vortex Pro's Race Fit provides a snug fit across the entire foot to guarantee that all your power is going to the pedals.