Our C-FREE carbon neutral -zip not only feels good, it does good. With C-FREE, we measured the carbon footprint of these styles and we re neutralizing their impact with Carbonfree certification. 5.9-ounce, 100% recycled polyester jersey Snag-proof Moisture-wicking Cadet collar Covered, dyed-to-match zipper with gunmetal pull Self-fabric cuffs Turned hem with side vents Due to the nature of polyester performance fabrics, special care must be taken throughout the printing process.