Corso, Italian for "flow", embodies that effortless rhythm when you’re perfectly in sync with your bike. The Corso Thermal Jersey by Castelli is designed to keep you in the zone, blending Italian engineering with 3D knit fleece for breathable warmth in the 50-60's (or layered for colder rides). Features three rear pockets and a full-length zipper for ventilation. Cut in a women’s performance silhouette with Castelli’s unmistakable Italian style, so you can look good while you chase flow and keep the cold at bay. Athletic fit.