Castelli Entrata VI jersey Trickle-down technology for both comfort and aerodynamics from Castellis extensive RD, combined with Italian fabrics, a YKK zipper, and aero mesh sleeves, makes the Entrata VI Jersey punch above its weight. While technically the entry-level jersey in the Castelli collection, it has been engineered to incorporate as much race-level performance as possible while still offering unmatched value. It benefits from the aero learnings from Castellis race RD through the one-piece sleeves with aero-optimized seaming. Not only is it aerodynamic, its also more comfortable thanks to the four-way-stretch Air Mesh fabric and raw-cut sleeve ending thats stretchy to fit every arm without constricting. The main body fabric is just the right weight to keep you cool, while the ProSecco treatment carries away moisture to keep you dry. Its stretchy for great fit and provides UPF 30 sun protection, filtering 97% of UV rays. Thoughtful design and functional details abound, like the stretch panel in the center pocket, the highly reflective insert on the pocket, the full-length easy-sliding YKK Vislon zipper, and the silicone gripper elastic to keep the back of the jersey in place. Features Italian-made ProSecco body fabric with hydrophilic treatment to wick moisture away from your body. Air Mesh sleeves in modified raglan pattern provide more comfort and better aerodynamics. Raw-cut sleeve endings lie flat and never constrict. Full-length easy-sliding YKK Vislon zipper. 3 rear pockets, with center pocket with extra stretch insert and reflective panel Silicone gripper elastic at waist.