Specialized's S-Works Sub6 shoes are the lightest weight, most aerodynamically advanced shoes they have ever produced. Traditional laces cut down on weight while the Warp Sleeve covers the laces and smooths out the shoe profile for enhanced aerodynamics. The S-Works Sub6 are also incredibly stiff and efficient. Combine that with a Body Geometry sole and foot-bed that optimize hip, knee, and foot alignment and the Padlock heel system that locks your feet into the shoes, and you have one incredibly comfortable, secure, and efficient pair of road 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, the Micromatix synthetic upper features laser-perforated venting so you stay cool on those hot summer climbs.