While the Fizik R1 Uomo shoes are some of the most comfortable, high performance shoes weve worn, they may be a little pricey for riders who want comfort but who arent rolling to that start line on a regular basis. For this reason, Fizik introduced the R5 Uomo Boa Mens Shoes. While they arent sewn from kangaroo leather, the R5 uppers are highly breathable Microtex fabric with nylon mesh windows for ventilation. Inside of the uppers is Fiziks Superlight Insole that supports your arches and absorbs road vibration. The uppers are placed on a carbon-reinforced nylon outsole that allows efficient power transfer while remaining on the lower end of the carbon cost spectrum. The stack height is low and the outsole is engineered to drive power to the pedals while remaining flexible enough for comfort on long rides. A molded heel cup helps to keep your foot in the ideal pedaling position while minimizing heel slippage. To secure the shoes to your feet, the R5 Uomo use the Boa closure system. Consisting of a single dial with a continuous loop, it is micro-adjustable for the perfect fit. A hook-and-loop closure at the forefoot adds a separate adjustment point to keep your toes happy.