The sun hat is made of 100% chinlon, quick dry, lightweight, and waterproof.This bucket sun hat circumference is 22.8- 23.6 inches, it fits both men and women. It has adjustable chin buckle strap, ensuring a comfortable fit for head circumferences of 22-24 inches.The chin strap keeps the hat securely in place, even in windy conditions, making it ideal for both men and women. Equipped with a wide 3.7-inch brim, this hat offers full coverage to shield your face and neck from harmful UV rays.Designed with mesh panels for enhanced airflow, this hat keeps you cool by allowing heat and moisture to escape. Perfect for beach, pool, park, travel, golf, fishing, gardening, hiking, camping, hunting or any outdoor sports and activities.