The R1 Air Zip-Neck is a lightweight, highly breathable and quick-drying technical fleece for cool conditions. The quarter-zip offers venting and easy layering, and is built with 100% recycled polyester fabric for comfort on the move. Made in a Fair Trade Certified™ factory. Patagonia Mens R1 Air Zip Neck Features: 100% recycled polyester jacquard fleece with hollow-core yarns wicks moisture, dries fast and is highly breathable for cool-weather activities; with a slim fit Zigzag-knit pattern increases airflow and minimizes bulk for breathable, compressible performance Off-shoulder seams sit comfortably under pack straps Zippered left-chest pocket for stashing small items Quick-drying woven binding at the back hem and cuffs for improved fit and durability Quarter-zip for added venting and easy layering Made in a Fair Trade Certified™ factory, which means the people who made this product earned a premium for their labor