Specialized sums up their S-Works 6 road shoes in two simple phrases: explosive speed and superior comfort. The S-Works 6 is Specialized's stiffest and most efficient shoe ever. Combine that with a Body Geometry sole and footbed that optimizes hip, knee, and foot alignment, the Padlock heel system that locks your feet into the shoes, and independent Boa closures for a custom, on-the-fly fit, and you have one incredibly comfortable, efficient pair of shoes. Asymmetrical titanium cleat bolts rotate to allow for even more flexibility and range for cleat positioning, while replaceable heel treads increase shoe longevity. Plus, strategically placed no-stretch fabric improves your efficiency and connection to the bike.