When the trail demands both performance and comfort, the Patagonia R1 Air Zip Neck delivers lightweight technical fleece that moves with you through every adventure. Engineered with innovative zigzag-knit construction and hollow-core yarns, this women's hiking fleece maximizes airflow while maintaining essential warmth for cool-weather activities. The thoughtful off-shoulder seam design eliminates pressure points under backpack straps, making it the perfect climbing mid-layer or backpacking companion. With its quarter-zip ventilation system and quick-drying 100% recycled polyester construction, you'll stay comfortable whether you're ascending alpine routes or exploring autumn trails, all while supporting sustainable outdoor gear practices that protect the places you love to roam.