Warning: if you upgrade to the Fi'zi:k R1B Uomo Boa Shoe, there's a good chance you'll be so spoiled by the sumptuous uppers and irresistibly second skin fit that you'll never be able to go back to another shoe. That being said, if you have a penchant for clean, minimal aesthetics and pro level functionality, you'll have a hard time finding fault with the R1B Uomo. As the top of the line shoe from a brand that prides itself on simplicity over excessive extras, the R1B Uomo relies on fit and high end materials to become an indispensable part of kit. This year, Fi'zi:k replaced last year's kangaroo leather uppers with its trusted microtex material. If you're a loyal R1B fan, don't worry the synthetic material has already earned its stripes on Fi'zi:k's extensive line of saddles and other shoes, so rest assured that it's worthy of a shoe of the R1B's caliber. With an asymmetrical cut and dual Boa dials providing limitless potential for fit adjustment, the shoes' one piece uppers will wrap around your feet in a way not unlike the post ride burrito you dream about to get you through your last climb of the day. Plus, Fi'zi:k took the time to carve tiny, precise pinpricks throughout the shoes' uppers to let the shoes, and your feet, breathe on hot days. Fi'zi:k didn't stop there either. Other fit details, like an adjustable heel cup for more consistent power transfer and Fi'zi:k's careful Volume Control design work to achieve a nearly custom fit that goes beyond simpler, less precise models. Along the bottom, a uni directional carbon fiber sole anchors the shoe, promising the kind of snappy power transfer that has earned the R1B Uomo its well deserved presence in the peloton. Take a closer look at the soles and you'll notice a complex, and meticulous arrangement of vents, capably managing airflow without inhibiting your aerodynamic efficiency.