Richardson Garment Washed Printed Trucker Cap ul)100% polyester, twill . Green Camo & Military Camo are 100% cotton. 100% polyester soft mesh back. Unstructured, six-panel, low pro profile. Pre-curved bill. Adjustable snapback closure. This product meets the following Sustainable Style subcategory:Responsible Mindset: Official partnership with Captains for Clean Water.