Castelli's CLIMBER'S 4.0 is a men's short-sleeved cycling jersey designed for cyclists who ride intensively in the summer months.
Its ultra-light, ventilated design makes it ideal for hot conditions, allowing very agile airflow while maintaining a high level of aerodynamic performance. StradaPro 3D fabric dries quickly, while Flusso 3D fabric on the back filters out 90% of UV rays. Elbow-length stretch sleeves with raw edge ensure maximum freedom of movement, and the YKK Vislon zipper facilitates adjustment.
You can also slip a few nibbles into the three back pockets, and the teardrop shape at the back keeps the jersey in place whatever you do.