Rigidity
Rigid nylon sole for even more efficient pedalling (Keo or SPD cleats)
Fit
Heel stiffener and 3 rip-tabs for better foot support
Lightweight
305g in size 8½.
Ventilation
sole features two ventilation openings for air flow
Abrasion resistance
Toe stiffener to prevent damaging the shoes when stopping
Breathability
Quick drying 3D mesh inside the shoe