Usage: Racing Bike - Outsole: Millenium 4 Carbon Composite - Upper: Politex - Insole: Yes - Closure: Tecno 3 System + two Velcro straps - Pedal Compatibility: Automatic release (SPD SL / 3-hole Look) - Extra features: Soft Instep 3, Replaceable heel SIZES (EU) - Fit: SIDI shoes fit tight, it is recommended to select one size up SOFT INSTEP 3 SYSTEM BELT It is a strap positioned on the instep, shaped, soft and anatomical coupled with a soft material for more comfort. It distributes pressure evenly over the instep and adjusts on both sides to have a perfectly centered position of the strap depen...