Patagonia Trucker Hat- Back for Good Bear: Buckwheat GoldRoadworthy and trustworthy, the Kids Trucker Hat is made of organic cotton and polyester mesh with an adjustable fit. Our mid crown trucker style hat is made from durable 100% organic cotton canvas. It has a polyester mesh back with vent holes that allow steam to escape when the action heats up. Moisture wicking headband for comfort. A large, pliable bill shades the eyes and nose, while adjustable tabs in back customize the fit. Features Made of