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