100% Cotton. Fabric: Twill. Design: Plain. 5 Panel Design, 6 Row Stitching, Button at Top, Curved Brim, Stitched Ventilation Eyelets, Tearaway Label. Fastening: Tri-Glide Buckle. Sustainability: Control Union CU811033, EarthAware, OCS Standard. Beechfield Men's Classic Cotton 5 Panel Baseball Cap in Navy