Our C-FREE carbon neutral polos not only feel good they do good. With C-FREE we measured the carbon footprint of these styles and we're neutralizing their impact with Carbonfree certification. 4.9-ounce 100% recycled polyester jersey Snag-proof Moisture-wicking Self-fabric collar 3-button placket Grey buttons include 26% recycled content Side ventsDue to the nature of polyester performance fabrics special care must be taken throughout the printing process.