The F-11 uses a seamless upper design with FLRs new pro-last, comprised from a single piece of premium microfiber to conform to the shape of your foot. The lacing system uses a single dial & velcro strap for a secure fit at each point of your foot. A combination of nylon mesh ports, perforated holes and a breathable tongue deliver excellent ventilation. The F-11 is equipped with the R250 outsole to boost performance and pedal power transfer without compromising on weight or comfort.