Suitable for head circumferences of 21-23 inches. Drawstring closure Hand Wash Only You'll love the ponytail hole behind the sun hat because it's too hot to wear your hair down for long in the summer. The ponytail hole is in the perfect place to allow you to put your hair up or you can leave it down. The sun hat provides comfortable wear and excellent sun protection outdoors. We are sure you will receive many compliments when wearing the ponytail sun hat. One size fits most ladies. You can easily adjust the head circumference with the elastic buckle behind the sun hat. The adjustable chin strap is durable and easy to slide up and down, ensuring the summer cap won't fall off in strong winds. The wide brim length is 3.35 inches, it is wide enough to protect your face and neck from the sun and provides excellent protection against UV rays. With foldable side snaps, it can be worn in different fashion styles: cowboy hat style and flat brim hat style. Casual stylish sun hats are perfect choices for outdoors, beach, gardening, fishing, safari, camping, hiking, hunting, pool, travel, climbing, mountaineering, boating, golf, etc. This sun hat will be your go-to hat for the entire summer. Designed with mesh part on the sides of the crown to create airflow around the head so it doesn't develop a strange odor and always keeps your head cool and ventilated. The built-in sweatband absorbs sweat and prevents sweat from running down. The summer sun hat is waterproof, quick-drying, breathable, anti-sweat, lightweight, and durable. The foldable material folds freely and can be restored to its original shape for easy transport or bagging. Hand wash and hang to dry.