100% Polyester Size: One size for teens and ladies Head measurement: 56cm, 22, Size 7 to 58cm, 22-3/4, Size 7-1/4) Brim: 3-1/2 Height: 5 Occasion: Casual or fancy events. Dress it up or dress it down. Perfect for a day in sun, everyday wear, a day or night out on the town, laying out in the sun, bbq party, house party, beach party, pool party, sun bathing, sailing, outdoor picnics, derby, boating all outdoor activities for sun protection. Horse races, Kentucky Derby, religious gatherings. Bridal, brides maid, maid of honor, Perfect for vacation and cruise attire. Easy to pack and packable.