Simple & elegant the Pro combines a sleek buckle closure full-carbon sole & proven Body Geometry technology to make this shoe a comfortable friend for all day endurance rides.> Lightweight FACT full-carbon sole uses Torsion Box technology which increases stiffness for enhanced power transfer: 11.0 stiffness index> Performance-enhancing Body Geometry contours in the outsole & High Performance Body Geometry+ Footbeds> New low profile SL2 buckle closure system is designed for lightweight secure ankle control & adjustability> Minimalist designed Thermobonded upper with adaptive fit is lightweight durable & brings a superior supple fit> Replaceable heel lugs with internally recessed bolts for security> 3-bolt cleat pattern fits Shimano SPD-SL Look Time & Speedplay> Approximate weight: 259g (1/2 pair 42)