This earth-friendly hat is made from recycled polyester (RPET). The thread is crafted from recycled plastics that would have been destined for a landfill. The production of ReTerra™ uses up to 90% less water than the production of virgin polyester! It also saves on energy and CO2 emissions. Five-panel hat styling with mesh sides and back. Self-fabric hook-and-loop closure with elastic and ring for very comfortable adjustability with just the right amount of give.