The Patagonia R1 Air 1/2-Zip Fleece Pullover elevates a classic design with cutting-edge warmth. Built from 5.7-oz recycled polyester jacquard fleece with innovative hollow-core yarns, you get exceptional heat retention without excess weight or bulk. The deep front zip and slim fit give you versatile temperature regulation whether you're charging uphill or belaying on cold crags. This Fair Trade Certified™ pullover proves technical performance and environmental responsibility can coexist perfectly.