DHa RCO Flat Brim Trucker Cap Doesn't Fall Flat If your head is in need of covering, you'll want to wear a comfortable hat. The DHa RCO Flat Brim Trucker Cap has a flat brim peak and mesh back panels for increased airflow. This hat fits heads from 55cm to 60cm. Features Material: cotton and polyester blend Mesh back panel for increased airflow Sizing: 55cm to 60cm | Dharco | Flat Brim Trucker Cap In Midnight Unique | Polyester