Fizik is known for its attention to detail in all its accessories. The R1 Uomo Men's Shoes are no exception, with the finest of leathers and the stiffest of soles to keep your feet swaddled in comfort mile after mile. First, unlike so many shoes that are constructed from synthetic leather, the R1 Uomos are crafted from Kangaroo leather. Kangaroo leather is an ultra soft leather that conforms to your feet to provide almost slipper like comfort. The uppers are secured with Fizik's HexMC carbon fiber ratcheting buckle, which is adjustable on the fly, and two hook and loop closures for a customizable fit. The lever of the ratchet is carbon fiber while its base is stainless steel. It features double click adjustment and a full release for easy removal. The tongue features a removable pad to adjust the internal volume of the shoe. To further wrap your feet securely, the R1 Uomo has received a heel cup that is shaped to hold your foot from slipping during the up stroke as well as while climbing. Additionally, the sole has been given variable thickness and stiffness. While the base layer is carbon fiber, the second layer is Tepex and is positioned closer to the heel. Tepex is slightly more flexible than carbon fiber and it means that it is able to accommodate multiple heel and arch sizes. Finally, the Mobius rail works with the insole to keep the heel in place, and Fizik uses a 3D Flex insole that is heat moldable.