The S-Works Sub 6 is the most aerodynamically advanced, lightest shoe we've ever produced. The traditional lacing system cuts down weight, while the Warp Sleeve™ lace cover—a sleeve worn directly over the laces—is Win Tunnel Engineered to reduce drag & clean airflow over the shoe. When combined with the narrower heel cup, you can save up to 35 seconds over 40 kilometres when compared to the previous S-Works Road Shoe. With the Pad Lock™ heel, it maintains the same secure & snug heel fit as the all-new S-Works 6 shoe for superb connection & efficient power transfer, but in a bold yet minimalist package. Less is more.