Patagonia Fitz Roy Bison LoPro Trucker Hat One Size Fits most Adjustable backing snap closure From Site: The Fitz Roy Bison LoPro Trucker features a traditional ball-cap fit in a trucker setup: organic cotton bill, crown and headband; polyester mesh back. The hat's six-panel design and pliable bill provide all-day comfort, and snaps in back make sure you're well-adjusted. Fair Trade Certified ™ sewn. Excellent pre-loved condition probably only worn a couple times.