The Patagonia GPIW Biner Interstate Hat pays homage to the tool that's kept Patagonia hanging in there since 1973. The GPIW Biner Interstate Hat features Patagonia's highest crown with a broad, seamless polyester foam front and cord at bottom front panel. 5-panel design has a mesh-polyester back to circulate airflow. The flat brim is made of 100% organic cotton canvas, with a moisture-wicking COOLMAX headband to keep you comfortable and dry. Adjustable tabs in back secure the fit.Features:Hat has a 100% polyester crown and 100% organic cotton bill; mesh panel in back Fabric:Crown: 3.2-oz 100% polyesterBill: 8.3-oz 100% organic cotton canvasMesh panel: 2.5-oz 100% polyester mesh