When we created this jersey we primarily focused on making it light for the big alpine climbs as well as cool for hot days. A real Tour De France jersey if there ever was one. But we didn't want to completely ignore aerodynamics, so we used patterning similar to our aero race 5.1 jersey, which we knew was fast. The resulting jersey is extremely cool and light and instantly became a favourite with our pro riders. The surprise was when we put it in the wind tunnel. This lightweight jersey posted the same results as our aero race 5.0 jersey, just 2 watts slower than our updated 2016 aero race 5.1 jersey, the most aero jersey we've ever tested. Next time they ask you if you want aero or light, just answer, "yes, please."