The Patagonia Women&';s R1 Air Vest delivers lightweight core warmth for high-output days in the cold. Knit from 100% recycled polyester in Patagonia&';s airy zigzag pattern, it traps heat while staying exceptionally breathable, so you stay comfortable ski touring, trail running, or hiking uphill. It wicks moisture, dries fast, and layers cleanly under a shell. Features: Breathable R1 Air fleece: Zigzag knit of 100% recycled polyester balances warmth and airflow. Lightweight core insulation: Adds heat to your torso without restricting movement. Quick-drying and moisture-wicking: Manages sweat during aerobic effort in cold conditions. Full-length front zip: Easy on and off with fast venting when you heat up. Layer-friendly fit: Works as a midlayer or standalone piece. Fair Trade Certified(TM) sewn: Supports a premium for the people who make it.