60/33/4 cotton/polyester/PU spandex, twill oil cloth fabric. 100% polyester mesh back. Structured, six-panel, mid pro profile. Metal eyelets on front panels. Pre-curved bill. Adjustable snapback closure. This product meets the following Sustainable Style subcategory - Responsible Mindset - This brand donates 1% or more of their annual revenue to Captains for Clean Water.