The Sidi MTB Gravel shoes are just the right choice for all mountain bikers and gravel bikers who don’t want to make any compromises. They feature Sidi’s carbon fiber reinforced MTB competition nylon sole and offer outstanding stiffness as well as maximum power transfer. Tecno-3 System Tecno-3 System dials in fit along the entire length of the shoe, adapting the upper to the shape of the foot for a customized fit.