Outer Materials: 98% Organic Cotton, 2% Elastane. Fabric: Spandex. Design: Plain. Authentic Sticker, Button at Top, Curved Brim, Decorative Stitch Detailing, Eyelets. Fastening: Adjustable, Snapback. 269gsm. Sustainability: BSCI, Organic Cotton Standard 100, Sedex, WRAP Certified.