An efficient & economical womens design with performance-enhancing Body Geometry ergonomics a contoured footbed & tuned stiffness in the outsole. Womens-specific contoured fit with narrow straps Stiff injection-moulded & glass-reinforced sole with generous vent ports at the front & rear: 5.0 stiffness index Performance-enhancing BG features in the outsole & footbed Updated with the Low-profile & lightweight M-lock SL buckle for secure closure Synthetic upper for supple fit Fits both 2-bolt SPD & 3-bolt cleat systems