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. a Fair Trade Certified™ factory.Workbook Features100% recycled polyester jacquard fleece with hollow-core yarns wicks moisture/dries fast and is highly breathable for cool-weather activities; with a slim fitZigzag-knit pattern increases airflow and minimizes bulk for breathable/compressible performanceOff-shoulder seams sit comfortably under pack strapsOne back-right zippered pocket stashes small items without interfering with harness or pack linesQuick-drying woven binding at the back hem and cuffs for improved fit and durabilityQuarter-zip for added venting and easy layering a Fair Trade Certified™ factory/which means the people who made this product earned a premium for their labor