Material: 100% polyester Mesh .soft & comfy to wear. Washable and quickly dry. It is so durable that will not lose its shape. Individuality and unisex,head circumference 21.7-22.8 (55-58cm),one size fits most adult. Occasion: Perfect for a day in sun, looking pretty, casual wear, ball park, walking, jogging, exercise, gym. beach party, pool party, sailing, outdoor picnics, boating all outdoor activities for sun protection. You really can’t go wrong with this time-tested favorite.