This ultralight Patagonia jacket is designed for fast, active outdoor use where breathability, stretch, and packability matter most. Built from 100% recycled polyester stretch-woven ripstop with a durable water repellent (DWR) finish, it provides lightweight wind resistance and light weather protection without restricting movement. The hybrid construction, fitted hood, and streamlined design make it ideal for running, hiking, and high-output trail activities where every gram counts.