The Giro Chrono Pro Windbloc Jersey features Polartec Windbloc panels and a brushed-back Italian thermal fabric with a DWR coating to block wind and cold air, ensuring warmth. It includes custom articulated stretch cuffs that fit under gloves and a full-length wind guard front zipper to keep cold air out. Its packability, DWR coating, and Polartec fabric technology make it ideal for windy conditions.