What Our Gearhead(R) Experts Are Saying:"The Competizione 4 SS Jersey has been my go-to for summer training rides and the occasional weekend race. The tailored fit sits close without feeling restrictive through the shoulders and arms, and at 141 grams it genuinely disappears on the bike. The silicone gripper at the waist keeps everything tucked in even when I am out of the saddle pushing hard on a climb."The Castelli Soudal Quick Step Competizione 4 SS Jersey is the kind of warm-weather kit that makes you want to find a reason to ride. Built for temperatures between 18 and 35 degrees Celsius, it hits the sweet spot between a race-tight fit and the kind of tailored comfort that holds up through long training blocks and weekend racing alike. Stretch fabric across the front, back, and sleeves moves with the body through every position on the bike without pulling, bunching, or restricting the shoulders on hard efforts. At 141 grams, the Competizione 4 disappears the moment you pull it on, and the raw-cut short sleeves keep the look and feel clean and modern without any excess material at the arm. A full-length YKK Vislon zipper handles ventilation on descents and false flats, spacious rear pockets sit in the right place for easy access while riding, and a silicone gripper at the waist keeps the jersey locked in position whether you are seated and spinning or out of the saddle on a steep pitch. The 2026 Soudal Quick Step colorway ties it all together with the team credibility that fans of the sport will recognize immediately.