Castelli 150 Years - Soudal Quick-Step Jersey With a stretch fit across the body and arms, thanks to high-performance fabrics, the Castelli 150 Years - Soudal Quick-Step Jersey ensures there's no watts wasted as you push the pace. Not only do the fabrics provide an aero silhouette, but they're also quick at dealing with moisture, keeping you drier and more comfortable when the heat rises. And should you feel the need for extra ventilation, a full-length YKK® Vislon® zipper makes it easy to control airflow. At the waist, a silicone gripper ensures a smooth fit, preventing the jersey from riding up. Celebrating 150 Years of Performance Celebrate 150 years of cycling heritage with this special-edition Castelli Soudal Quick-Step jersey. Built on the race-proven Competizione 4 chassis, this kit blends elite performance with a refined bianco crema aesthetic. This jersey is a tribute to over a century of innovation - honouring where Castelli has been while pushing the limits of where cycling is going.