Designed for a more conventional appearance, these sun hats keep the sun off your face, giving you the sun protection you need as you go about your day. Lightweight, breathable and quick dry Nylon fabric with 50 UPF rating (Mesh vents not rated). 4" brim with floating foam and ample crown keep you covered and comfortable. Cooling side mesh ventilation, plus a convenient chinstrap to keep one of these hats from sailing off on windy days. New adjustable internal sizing band with wicking sweatband allows custom fit. These sun hats are designed for casual everyday use with decorative brow band. Packs flat for travel. . Sizing (Head Circumference (Inches), Traditional Hat Size): Small: 20-21", 6-6 3/4"; Medium: 21-23", 6 3/4-7 1/4; Large: 23-25", 7 1/4-7 7/8. Weight: 4 oz. *** Second color listed is the under brim color.