Sidi Turbo Mountain Clipless Shoes - Mens Black/Black 48Sidi Turbo Mountain Clipless Shoes Mens Black Black 48. The Sidi MTB Turbo is a shoe with a strong cycling soul designed for comfortable cycling and walking thanks to the soft sole and air mesh upper. The 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 The closure uses a new proprietary SIDI Wire material that is completely non binding for intuitive and effortless on the