the fizik r5b black-red shoes 2017 are sneakers for track and road that are developed in collaboration with professional riders. they are a model widely used in competitions such as the olympics or the world championships. for this, in this model is employ the best technologies to get a product that offers a mix carefully elaborate of comfort and lightness, adjustment, transfer of power and efficiency aerodynamics. this model is built with a sole of carbon reinforced of nylon, that is hard to get an excellent transfer of power. the outer material is made from reflective microtex. the system of closure is a boa ip1-to, which ensures comfort and precision of closing and adjustment. for the convenience of usage, the insole, designed by fizik, gives a plus of comfort shoes, and its flexible layout adapts to any type of foot. features: -model of road. -material outside of microtex reflective with heel cap. -carbon reinforced nylon sole. -system of closing boa ip1-to. -template fizik. -approximate weight of 250 gr.